Characteristics of outpatients diagnosed with the selective/neophobic presentation of avoidant/restrictive food intake disorder

Examining measurement invariance of appetitive trait and ARFID symptom measures by food security status

OBJECTIVE

Measures assessing appetitive traits (i.e., individual differences in the desire to consume food) and disordered eating have generally been developed in predominantly food-secure populations. The current study aims to test measurement invariance (MI) for a measure of appetitive traits and a measure of Avoidant Restrictive Food Intake Disorder (ARFID) symptomology across food security status.

METHOD

Data from a sample of mothers (n = 634) and two undergraduate samples (n = 945 and n = 442) were used to assess MI for the Adult Eating Behavior Questionnaire (AEBQ), which measures appetitive traits, and the Nine Item ARFID Screen (NIAS), which measures ARFID symptomology. Current food security was assessed using the 18-item USDA Household Food Security Survey Module, which was dichotomized into two groups: 1) the 'food insecure' group included marginal, low, and very low food security and 2) the 'food secure' group included high food security. Overall and multi-group confirmatory factor analyses were conducted separately for each measure in each sample.

RESULTS

Results demonstrated scalar (i.e., strong) MI for both measures across samples, indicating that these measures performed equivalently across food-secure and food-insecure individuals.

CONCLUSION

Findings suggest that differences in appetitive traits by food security status observed in prior research are not artifacts of measurement differences, but instead reflect true differences. Additionally, past mixed results regarding the relationship between food insecurity (FI) and ARFID symptomology are not likely driven by measurement error when using the NIAS.

The relationship between food selectivity and stature in pediatric patients with avoidant-restrictive food intake disorder - an electronic medical record review

BACKGROUND

We aimed to characterize stature in pediatric patients with avoidant/restrictive food intake disorder (ARFID), including associations between body size and nutrient intake and height.

METHODS

We conducted a secondary analysis of pre-treatment data from 60 patients diagnosed with ARFID that were collected from the electronic medical record. Anthropometric measurements were converted to age- and sex-specific Z-scores using pediatric CDC growth charts. Spearman correlations were performed to test the relationship between height and weight/BMI Z-scores as well as height Z-score and diet variables.

RESULTS

On average, height (-0.35 ± 1.38), weight (-0.58 ± 1.56), and BMI (-0.56 ± 1.48) Z-scores tended to be lower than what would be expected in a generally healthy pediatric population. Percent of individuals with height, weight, or BMI Z-score < -2.0 was 8%, 20%, and 17%, respectively. BMI (P < 0.05) and weight (P < 0.05) were positively associated with height Z-score. Further, intake of some nutrients (e.g., calcium, vitamin D) correlated positively with height Z-score (all P < 0.05).

CONCLUSIONS

The cross-sectional relationships reported in this study suggest that in children with ARFID, body weight and consumption of bone-augmenting nutrients such as calcium and vitamin D correlated with height. A thorough understanding of the clinical manifestations of malnutrition and longitudinal effects of restrictive eating in patients with ARFID is critical.

Moderating effect of self-esteem between perfectionism and avoidant restrictive food intake disorder among Lebanese adults

BACKGROUND

Avoidant Restrictive Food Intake Disorder (ARFID) is a new diagnosis added to the DSM-5 characterized by pathological eating habits without body image disturbances. Previous findings demonstrated a general association between high levels of perfectionism and low levels of self-esteem in association with general eating disorders. However, research is scant when it comes to ARFID specifically. Subsequently, although self-esteem is seen to moderate the association between perfectionism and general eating disorders, this research study aims to explore the same moderation but with ARFID specifically.

METHODS

For this study, 515 Lebanese adults from the general Lebanese population were recruited from all over Lebanon, 60.1% of which were females. The Arabic version of the Big Three Perfectionism Scale- Short Form (BTPS-SF) was used to measure self-critical, rigid and narcissistic perfectionism; the Avoidant/Restrictive Food Intake Disorder screen (NIAS) was used to score the ARFID variable; the Arabic-Single Item Self-Esteem (A-SISE) was the scale used to measure self-esteem.

RESULTS

Across the different perfectionism types, self-esteem was seen to moderate the association between narcissistic perfectionism and ARFID (Beta = - 0.22; p =.006). At low (Beta = 0.77; p <.001), moderate (Beta = 0.56; p <.001) and high (Beta = 0.36; p =.001) levels of self-esteem, higher narcissistic perfectionism was significantly associated with higher ARFID scores.

CONCLUSION

This study brought to light some crucial clinical implications that highlight the need for interventions that help in the enhancement of self-esteem in patients with high perfectionism and ARFID. This study suggests that clinicians and healthcare professionals should focus more on risk factors influencing the development and maintenance of ARFID-like symptoms.

Systematic review of pharmacological treatments that reduce conditioned taste aversions in rodents: A potential animal model of pediatric feeding disorder and avoidant/restrictive food intake disorder (ARFID)

Avoidant/restrictive food intake disorder (ARFID) is diagnosed when food avoidance leads to clinically significant nutritional, weight/growth, or psychosocial impairment. As many as 81.5% of children and adolescents diagnosed with ARFID have a history of a medical condition associated with pain, fatigue, or malaise. ARFID is diagnosed and treatment begins after the medical condition is resolved but food avoidance remains. Effective treatment involves repeated exposure to eating food and related stimuli aimed at creating inhibitory learning to counteract learned fears and aversions. Treatment usually involves positive reinforcement of food approach behavior and escape extinction/response prevention to eliminate food avoidant behavior. To shed light on the neural mechanisms that may maintain ARFID and to identify candidate pharmacological treatments for adjuncts to behavioral interventions, this paper systematically reviews research on drug treatments that successfully reduce conditioned taste aversions (CTA) in animal models by disrupting reconsolidation or promoting extinction. The mechanism of action of these treatments, brain areas involved, and whether these CTA findings have been used to understand human eating behavior are assessed. Collectively, the results provide insight into possible neural mechanisms associated with resuming oral intake following CTA akin to the therapeutic goals of ARFID treatment and suggest that CTA animal models hold promise to facilitate the development of interventions to prevent feeding problems. The findings also reveal the need to investigate CTA reduction in juvenile and female animals and show that CTA is rarely studied to understand disordered human feeding even though CTA has been observed in humans and parallels many of the characteristics of rodent CTA.

Psychometric properties of the nine-item avoidant/restrictive food intake disorder screen (NIAS) in Turkish children

BACKGROUND

The nine item avoidant/restrictive food intake disorder screen (NIAS) is a short and practical assessment tool specific to ARFID with three ARFID phenotypes such as "Picky eating," "Fear," and "Appetite". This study aimed to evaluate the psychometric properties of the Turkish translation of the NIAS parent form and to investigate the relationship between ARFID symptoms and anxiety, depression symptoms, and eating behaviors in a sample of Turkish children.

METHOD

Parents were asked to provide their children's sociodemographic data and to complete the NIAS, Eating Disorder Examination Questionnaire-Short (EDE-QS), Children's Eating Behavior Questionnaire (CEBQ), and Revised Child Anxiety and Depression Scale (RCADS) scales.

RESULTS

The sample included 440 participants between 6 and 12 ages. Turkish NIAS demonstrated good internal consistency. The three-factor model of the Turkish NIAS was in an acceptable structure. The Turkish NIAS scale was shown to be valid and reliable. NIAS scores were shown to be higher in underweight participants. The NIAS-parent version subscales showed expected convergent and divergent validity with the CEBQ, EDEQ-S, and RCADS scales in children, except CEBQ emotional overeating and desire to drink subscales were correlated with NIAS.

CONCLUSION

The Turkish version of the NIAS is valid and reliable in evaluating ARFID symptoms in children.

Subtypes of avoidant/restrictive food intake disorder in children and adolescents: a latent class analysis

Background

The Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5) describes three primary avoidant/restrictive food intake disorder (ARFID) subtypes including sensory sensitivity, lack of interest in food or eating, and fear of aversive consequences. Studies exploring these subtypes have yielded varying results. We used latent class analysis (LCA) based on the psychopathology of ARFID in a sample of children and adolescents to empirically identify classes.

Methods

We carried out a surveillance study of ARFID in collaboration with the British Paediatric Surveillance Unit (BPSU) and the Child and Adolescent Psychiatry Surveillance System (CAPSS) in the United Kingdom and the Republic of Ireland from 1st of March 2021 to 31st of March 2022. Paediatricians and child and adolescent psychiatrists were contacted monthly to report newly diagnosed cases of ARFID electronically and complete a detailed clinical questionnaire. Cases aged 5-18 years were included. LCA was performed specifying 1-6 classes and likelihood-based tests for model selection. The Bayesian Information Criterion (BIC), the Akaike Information Criterion (AIC) and the Sample-Size Adjusted BIC were used to determine the most parsimonious model. Analysis of variance (ANOVA) and χ2 tests were used to compare the characteristics of the identified classes. A multinomial logistic regression (MLR) was performed to investigate predicting factors for the latent classes.

Findings

We identified 319 children and adolescents with ARFID. LCA revealed four distinct classes which were labelled as Fear subtype, Lack of Interest subtype, Sensory subtype, and Combined subtype. The probability of being classified as these were 7.2% (n = 23), 25.1% (n = 80), 29.5% (n = 94) and 38.2% (n = 122), respectively. Age at diagnosis, sex, weight loss, distress associated with eating, and autism spectrum disorder diagnosis were identified as predictors of class membership.

Interpretation

LCA identified four different classes in a sample of children and adolescents with ARFID. The Combined Subtype, a mixed presentation was the most common. The other three classes resembled the subtypes described in the literature. Clinicians should be aware of these different presentations of ARFID as they may benefit from different clinical interventions.

Funding

This study was funded by the Former EMS Ltd (charity number 1098725, registered October 9th 2017).

A scoping review of psychological interventions and outcomes for avoidant and restrictive food intake disorder (ARFID)

OBJECTIVE

This scoping review identifies and describes psychological interventions for avoidant restrictive food intake disorder (ARFID) and summarizes how outcomes are measured across such interventions.

METHOD

Five databases (Cochrane, Embase, Medline, PsycInfo, Web of Science) were searched up to December 22, 2022. Studies were included if they reported on psychological interventions for ARFID. Studies were excluded if participants did not have an ARFID diagnosis and if psychological interventions were not delivered or detailed.

RESULTS

Fifty studies met inclusion criteria; almost half were single-case study designs (23 studies) and most studies reported on psychological interventions for children and adolescents with ARFID (42 studies). Behavioral interventions (16 studies), cognitive-behavioral therapy (10 studies), and family therapy (5 studies), or combinations of these therapeutic approaches (19 studies) were delivered to support patients with ARFID. Many studies lacked validated measures, with outcomes most commonly assessed via physical health metrics such as weight.

DISCUSSION

This review provides a comprehensive summary of psychological interventions for ARFID since its introduction to the DSM-5. Across a range of psychological interventions and modalities for ARFID, there were common treatment components such as food exposure, psychoeducation, anxiety management, and family involvement. Currently, studies reporting on psychological interventions for ARFID are characterized by small samples and high levels of heterogeneity, including in how outcomes are measured. Based on reviewed studies, we outline suggestions for clinical practice and future research.

PUBLIC SIGNIFICANCE

Avoidant restrictive food intake disorder (ARFID) is an eating disorder characterized by avoidance or restriction of food due to fear, sensory sensitivities, and/or a lack of interest in food. We reviewed the literature on psychological interventions for ARFID and the outcomes used to measure change. Several psychological interventions have been developed and applied to patients with ARFID. Outcome measurement varies widely and requires further development and greater consensus.

Birth-related, medical, and diagnostic characteristics in younger versus older children with avoidant/restrictive food intake disorder (ARFID)

BACKGROUND

Although avoidant/restrictive food intake disorder (ARFID) presents the replacement and extension of feeding disorders of infancy and childhood, previous research into ARFID concentrated mainly on older patients. While birth-related characteristics play an etiologic role in feeding disorders, virtually nothing is known so far in ARFID. Therefore, the first aim of the study was to identify differences in birth-related characteristics in younger vs. older children with ARFID. Second, differences in physical and mental comorbidities, and third, diagnostic features between age groups were analysed.

METHODS

Among N = 51 in- and outpatient treatment-seeking patients, n = 23 patients aged 0-5 years (30% girls) and n = 28 patients aged 6-17 years (57% girls), with an interview-based diagnosis of ARFID were included. Data on the pre- and perinatal period and mental and physical comorbidities were derived from patients' medical records, while diagnostic criteria, main ARFID presentation, and sociodemographic variables were collected through diagnostic interview.

RESULTS

Significantly, younger patients with ARFID were born more often preterm and had more pre- and perinatal complications and a higher incidence of postnatal invasive procedures. Patients with ARFID aged 0-5 years presented significantly more physical comorbidities and conditions, especially congenital anomalies, while mental comorbidities, especially mood disorders, were significantly more common in patients with ARFID aged 6-17 years. No age differences were found for the distribution of diagnostic criteria and main ARFID presentation.

CONCLUSION

This is the first study which aimed to identify age-specific characteristics in patients with ARFID with potential relevance for diagnosis and treatment. Especially birth-related complications, including invasive procedures postnatally, may be associated with developing ARFID, highlighting the importance of a closer view on these potential risk factors of the disorder. Future research with longitudinal design and larger samples may allow more detailed information on further age-specific associations, symptom trajectories, and age-specific risk factors for ARFID.

Psychometric properties of an Arabic translation of the Nine Item Avoidant/Restrictive Food Intake Disorder Screen (NIAS) in a community sample of adults

BACKGROUND

No epidemiological data is yet available on Avoidant/Restrictive Food Intake Disorder (ARFID) in Arab countries, which may in part be due to the lack of measures available in Arabic language. This constitutes a major obstacle to further progress of our understanding of the nature, aetiology, course, treatment, and prevention of ARFID, especially as some evidence suggested that ARFID may vary across cultures and food environments. We aimed to contribute to the literature in the eating disorders field by examining the psychometric properties of an Arabic translation of the Nine Item ARFID Screen (NIAS).

METHOD

This was a cross-sectional, web-based study. A total of 515 Lebanese community adults (mean age of 27.55 ± 10.92 years, 69.9% females) participated. The forward-backward method was adopted to translate the NIAS from English to Arabic.

RESULTS

Confirmatory Factor Analyses provided evidence for the adequate fit indices for the three-factor model (i.e., Picky eating, Fear, and Appetite) and the 9-item version of the NIAS. An adequate reliability of the Arabic NIAS was achieved, with McDonald's ω ranging from .75 to .90 for the total score and all three subscores. Multi-group analyses demonstrated measurement invariance by sex (males vs. females) and weight groups (underweight/healthy weight [BMI ≤ 25] vs. overweight/obese [BMI > 25]) at the configural, metric, and scalar levels. Adequate patterns of correlations between the NIAS and measures of disordered eating symptoms, psychological distress and well-being were seen. In particular, fear was significantly associated with non-ARFID disordered eating symptoms. Appetite and Picky eating, but not Fear, were inversely correlated with well-being. All three NIAS subscores and the total score were positively correlated with psychological distress.

CONCLUSION

Findings provided evidence that the Arabic NIAS is a short, valid and reliable self-report measure to screen for ARFID symptoms. In light of these findings, we recommend its use for clinical and research purposes among Arabic-speaking adults.

The Intersection of Disorders of Gut-Brain Interaction With Avoidant/Restrictive Food Intake Disorder

High rates of overlap exist between disorders of gut-brain interaction (DGBI) and eating disorders, for which common interventions conceptually conflict. There is particularly increasing recognition of eating disorders not centered on shape/weight concerns, specifically avoidant/restrictive food intake disorder (ARFID) in gastroenterology treatment settings. The significant comorbidity between DGBI and ARFID highlights its importance, with 13% to 40% of DGBI patients meeting full criteria for or having clinically significant symptoms of ARFID. Notably, exclusion diets may put some patients at risk for developing ARFID and continued food avoidance may perpetuate preexisting ARFID symptoms. In this review, we introduce the provider and researcher to ARFID and describe the possible risk and maintenance pathways between ARFID and DGBI. As DGBI treatment recommendations may put some patients at risk for developing ARFID, we offer recommendations for practical treatment management including evidence-based diet treatments, treatment risk counseling, and routine diet monitoring. When implemented thoughtfully, DGBI and ARFID treatments can be complementary rather than conflicting.

Systematic Review of the Incidence and/or Prevalence of Eating Disorders in Individuals With Food Allergies

BACKGROUND

Chronic diseases involving strict dietary adherence have been associated with an increased risk of eating disorders (EDs). This is the first systematic review investigating the rate of EDs among individuals with food allergies (FAs).

OBJECTIVE

To report the incidence, prevalence, and types of EDs in individuals with FAs.

METHODS

Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, we searched 4 databases for studies published to January 2022 that reported the prevalence or incidence of EDs in samples with immunoglobulin E (IgE) or non-IgE-mediated allergy. Risk of bias was assessed and evidence qualitatively synthesized.

RESULTS

From 1,180 papers identified, 9 met inclusion criteria. There were 4,161 adult and pediatric participants with IgE-mediated FAs or eosinophilic esophagitis. Avoidant/Restrictive Food Intake Disorder (ARFID) or anorexia nervosa/bulimia nervosa were the main EDs identified. The prevalence of EDs in samples with FA ranged from 0.8% to 62.9%. Among studies investigating IgE-mediated FA (n = 6), the prevalence of anorexia nervosa and/or bulimia nervosa ranged from 17.6 to 61%, ARFID was 62.9%, and unspecified EDs was 0.8% to 6%. Among samples with eosinophilic esophagitis (n = 3), ARFID prevalence ranged from 4.5% to 51%. Most studies were limited by small sample size, possible selection bias, and lack of diagnostic EDs tools validated for food allergic populations.

CONCLUSIONS

Eating disorders appear prevalent in individuals with FA; however, prevalence estimates varied widely. Large studies with healthy control groups and validated measures to identify EDs in individuals with FA are needed to accurately determine the prevalence of EDs.

The prevalence and burden of avoidant/restrictive food intake disorder (ARFID) in a general adolescent population

BACKGROUND

Little is known about the prevalence and impairment associated with possible Avoidant/restrictive food intake disorder (ARFID) in community adolescent populations. We aimed to investigate the prevalence, health-related quality of life (HRQoL), and psychological distress associated with possible ARFID in a sample of adolescents from the general population in New South Wales, Australia.

METHODS

A representative sample of 5072 secondary school students aged between 11 and 19 years completed the online EveryBODY survey in 2017. The survey included demographic data, eating behaviours, psychological distress and both physical and psychosocial health-related quality of life.

RESULTS

The prevalence of possible ARFID was 1.98% (95% CI 1.63-2.41) and did not differ significantly across school years 7-12. The weight status of participants with possible ARFID did not differ significantly from those without possible ARFID. When measuring gender identity, the ratio of males to females with possible ARFID was 1:1.7. This was statistically significant, however, the effect size was very small. Psychological distress and HRQoL did not differ significantly between the possible ARFID and non-ARFID group.

CONCLUSIONS

The prevalence of possible ARFID was found to be similar to that of anorexia nervosa and binge eating disorder in the general adolescent population. Adolescents who identify as girls rather than boys may be more likely to develop ARFID, replication with new samples is required to confirm these findings. The impact of ARFID on HRQoL may be minimal in adolescence and become more significant in adulthood, further research using longitudinal design, healthy control groups and/or diagnostic interviews is required.

Current evidence for avoidant restrictive food intake disorder: Implications for clinical practice and future directions

Background

ARFID (avoidant restrictive food intake disorder) is a relatively new diagnostic term covering a number of well-recognised, clinically significant disturbances in eating behaviour unrelated to body weight/shape concerns. Its phenotypic heterogeneity combined with much about the condition remaining unknown, can contribute to uncertainties about best practice. While other reviews of the evidence base for ARFID exist, few specifically target health care professionals and implications for clinical practice.

Methods

A narrative review was conducted to synthesise the findings of ARFID papers in scientific journals focussing on four key areas relevant to clinical practice: prevalence, assessment and characterisation of clinical presentations, treatment, and service delivery. Freely available online databases were searched for case studies and series, research reports, review articles, and meta-analyses. Findings were reviewed and practice implications considered, resulting in proposed clinical recommendations and future research directions.

Results

We discuss what is currently known about the four key areas included in this review. Based on available evidence as well as gaps identified in the literature, recommendations for clinical practice are derived and practice-related research priorities are proposed for each of the four of the areas explored.

Conclusion

Prevalence studies highlight the need for referral and care pathways to be embedded across a range of health care services. While research into ARFID is increasing, further studies across all areas of ARFID are required and there remains a pressing need for guidance on systematic assessment, evidence-based management, and optimal service delivery models. Informed clinical practice is currently predominantly reliant on expert consensus and small-scale studies, with ongoing routine clinical data capture, robust treatment trials and evaluation of clinical pathways all required. Despite this, a number a positive practice points emerge.

Exploring differences in disordered eating and related appetitive traits among women based on childhood and current food security status

Despite emerging evidence that food insecurity (FI) is associated with elevated rates of eating pathology, little is known about the lasting impact of FI on eating behaviors. Studies that have explored the association between FI during childhood and eating behavior in adulthood have not accounted for current FI. The present study explored differences in disordered eating (DE) and related appetitive traits among four groups of cisgender female mothers: individuals who (1) endorsed childhood FI only (n = 96), (2) endorsed current FI only (n = 134), (3) endorsed both childhood and current FI (n = 257), and (4) denied both childhood and current FI (n = 146). Participants responded to online questionnaires including items from the USDA Household Food Security Survey Module, the 7-item Eating Disorder Examination-Questionnaire, the Eating Disorder Diagnostic Scale, and the Adult Eating Behavior Questionnaire. Adjusting for age and race/ethnicity, ANCOVAs explored mean differences between groups in DE and appetitive traits, and a modified Poisson regression model examined differences in binge-eating prevalence across the four FI groups. The "current FI only" group consistently endorsed the highest levels of DE and related appetitive traits followed by the "current and childhood FI" group, suggesting newly food-insecure women may be at highest risk for DE. Interestingly, across almost all constructs, the "childhood FI only" group did not differ significantly from the "no FI" group. These findings suggest that improved access to food may help offset risk for adult DE related to experiences of FI in childhood.

Epidemiology of eating disorders: population, prevalence, disease burden and quality of life informing public policy in Australia-a rapid review

BACKGROUND

Understanding of the epidemiology and health burden of eating disorders has progressed significantly in the last 2 decades. It was considered one of seven key areas to inform the Australian Government commissioned National Eating Disorder Research and Translation Strategy 2021-2031, as emerging research had highlighted a rise in eating disorder prevalence and worsening burden-of-illness. The aim of this review was to better understand the global epidemiology and impact of eating disorders to inform policy decision-making.

METHODS

Using a systematic Rapid Review methodology, ScienceDirect, PubMed and Medline (Ovid) were searched for peer-reviewed studies published between 2009 and 2021. Clear inclusion criteria were developed in consultation with experts in the field. Purposive sampling of literature was conducted, which predominately focused on higher-level evidence (meta-analyses, systematic reviews, and large epidemiological studies), synthesised, and narratively analysed.

RESULTS

135 studies were deemed eligible for inclusion in this review (N = 1324). Prevalence estimates varied. Global Lifetime prevalence of any eating disorder ranged from 0.74 to 2.2% in males, and 2.58-8.4% in females. Australian 3-month point-prevalence of broadly defined disorders was around 16% in females. Eating disorders appeared more prevalent in young people and adolescents, particularly females (in Australia: eating disorders ~ 22.2%; disordered eating ~ 25.7%). Limited evidence was found on sex, sexuality and gender diverse (LGBTQI +) individuals, particularly males, who had a six-fold increase in prevalence compared to the general male population, with increased illness impact. Similarly, limited evidence on First Australian's (Aboriginal and Torres Strait Islander) suggests prevalence rates similar to non-Indigenous Australians. No prevalence studies were identified specifically assessing culturally and linguistically diverse populations. Global disease burden of any eating disorder was 43.4 age-standardised disability-adjusted-life-years per 100,000; increasing by 9.4% between 2007 and 2017. Australian's total economic cost was estimated at $84 billion from years-of-life lost due to disability and death, and annual lost earnings ~ $1.646 billion."

CONCLUSIONS

There is no doubt that eating disorder prevalence and impact are on the rise, particularly in at-risk and understudied populations. Much of the evidence came from female-only samples, and Western, high-income countries which more readily have access to specialised services. Future research should examine more representative samples. There is an urgent need for more refined epidemiological methods to better understand these complex illnesses over time, to guide health policy and development-of-care.

Neurobiology of Avoidant/Restrictive Food Intake Disorder in Youth with Overweight/Obesity Versus Healthy Weight

OBJECTIVE

Avoidant/restrictive food intake disorder (ARFID) occurs across the weight spectrum, however research addressing the coexistesnce of ARFID with overweight/obesity (OV/OB) is lacking. We aimed to establish co-occurrence of OV/OB and ARFID and to characterize divergent neurobiological features of ARFID by weight.

METHOD

Youth with full/subthreshold ARFID (12 with healthy weight [HW], 11 with OV/OB) underwent fasting brain fMRI scan while viewing food/non-food images (M age = 16.92 years, 65% female, 87% white). We compared groups on BOLD response to high-calorie foods (HCF) (vs. objects) in food cue processing regions of interest. Following fMRI scanning, we evaluated subjective hunger pre- vs. post-meal. We used a mediation model to explore the association between BMI, brain activation, and hunger.

RESULTS

Participants with ARFID and OV/OB demonstrated significant hyperactivation in response to HCF (vs. objects) in the orbitofrontal cortex (OFC) and anterior insula compared with HW participants with ARFID. Mediation analysis yielded a significant indirect effect of group (HW vs. OV/OB) on hunger via OFC activation (effect = 18.39, SE = 11.27, 95% CI [-45.09, -3.00]), suggesting that OFC activation mediates differences in hunger between ARFID participants with HW and OV/OB.

CONCLUSIONS

Compared to youth with ARFID and HW, those with OV/OB demonstrate hyperactivation of brain areas critical for the reward value of food cues. Postprandial changes in subjective hunger depend on BMI and are mediated by OFC activation to food cues. Whether these neurobiological differences contribute to selective hyperphagia in ARFID presenting with OV/OB and represent potential treatment targets is an important area for future investigation.

The Polish Version of the Avoidant/Restrictive Food Intake Disorder Questionnaire—Parents Report (ARFID-Q-PR) and the Nine Items Avoidant/Restrictive Food Intake Disorder Screen—Parents Report (NIAS-PR): Maternal Perspective

The aim of the present study was to develop and validate the Avoidant/Restrictive Food Intake Disorder Questionnaire—Parents Report (ARFID-Q-PR), a new tool to diagnose ARFID, based on a report submitted by Polish mothers of children aged 2 to 10 years. In total, 167 mothers of boys and girls aged 2 to 10 participated in the study. We used the ARFID-Q-PR and the Nine Items Avoidant/Restrictive Food Intake Disorder Screen—Parents Report (NIAS-PR). In addition, all mothers were asked to provide information on age, sex, height and weight, chronic somatic diseases, neurodevelopmental and mental disorders as well as intellectual disability of their children. Results of the reliability analysis demonstrated that the ARFID-Q-PR had adequate internal consistency (Cronbach’s alpha of 0.84). The stability of the ARFID-Q-PR factorial structure was confirmed. It is composed of three subscales: (1) attitudes to food; (2) justification for restrictions; (3) somatic symptoms. Our findings demonstrated that the ARFID-Q-PR total score was positively associated with the NIAS-PR total score. In addition, children with developmental and mental disorders substantially demonstrated more ARFID symptoms than did the children in the general population. The Polish version ARFID-Q-PR can be used to recognize the ARFID symptoms in young children by the main feeder in the family—mother or father.

Sleep and Avoidant Restrictive Food Intake Disorder (ARFID): Correlation With Psychopathology, Gender, and Academic Performance

Objective

No studies have investigated sleep disturbance in avoidant/restrictive food intake disorder (ARFID). We examined sleep disturbance in ARFID and its association with eating problems, body mass index (BMI), gender, internalizing and externalizing symptoms, cognitive performance, and academic difficulties.

Methods

Data from 71 ARFID patients from our partial hospitalization program (PHP) for children and adolescents were examined. Sleep data were extracted from measures administered at admission including Achenbach Child Behavior Checklist (CBCL), Children's Depression Inventory (CDI), and Revised Children's Manifest Anxiety Scale (RCMAS). Correlational analyses were conducted to evaluate the convergent validity of parent-reported and participant-reported sleep problems. Association with the severity of eating problems, BMI, percentage of median body weight (% MBW), age, gender, psychotropic medication, psychopathology, and academic difficulties was examined using analysis of variance (ANOVA) and Pearson’s correlation. 

Results

Fifty-two percent of parents and 74% of participants reported two or more sleep symptoms. Trouble sleeping was reported by 46.48% and nightmares by 35.21% of parents. Parent-reported trouble sleeping highly correlated with internalizing disorders. Parent-reported trouble sleeping and participant-reported difficulty sleeping positively correlated with attention and attention-deficit/hyperactivity disorder (ADHD) problems. Parent-reported less sleep and feeling tired correlated with sluggish cognitive tempo, while walking/talking in sleep negatively correlated with school performance. Gender differences were noted in parent-reported sleep problems. Sleep disturbances were not associated with lower BMI or median body weight at intake. Parent-reported talking/walking in sleep and participant-reported bad dreams and bedtime worries positively correlated with Children's Eating Attitudes Test (ChEAT) scores at intake and discharge.

Discussion

Our results provide compelling evidence to screen for sleep disturbance in ARFID patients regardless of median body weight and BMI. Exploration of sleep disturbances in ARFID using objective measures is warranted.

How genetic analysis may contribute to the understanding of avoidant/restrictive food intake disorder (ARFID)

Avoidant/restrictive food intake disorder (ARFID) was introduced in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Unlike anorexia nervosa, ARFID is characterised by avoidant or restricted food intake that is not driven by weight or body shape-related concerns. As with other eating disorders, it is expected that ARFID will have a significant genetic risk component; however, sufficiently large-scale genetic investigations are yet to be performed in this group of patients. This narrative review considers the current literature on the diagnosis, presentation, and course of ARFID, including evidence for different presentations, and identifies fundamental questions about how ARFID might fit into the fluid landscape of other eating and mental disorders. In the absence of large ARFID GWAS, we consider genetic research on related conditions to point to possible features or mechanisms relevant to future ARFID investigations, and discuss the theoretical and clinical implications an ARFID GWAS. An argument for a collaborative approach to recruit ARFID participants for genome-wide association study is presented, as understanding the underlying genomic architecture of ARFID will be a key step in clarifying the biological mechanisms involved, and the development of interventions and treatments for this serious, and often debilitating disorder.

A retrospective study of eating and psychosocial problems in patients with hepatic glycogen storage diseases and idiopathic ketotic hypoglycemia: Towards a standard set of patient-reported outcome measures

There is a paucity in literature on eating and psychosocial problems in patients with hepatic glycogen storage disease (GSD) and idiopathic ketotic hypoglycemia (IKH), problems that can greatly affect quality of life. This is a monocentre, retrospective, observational mixed method study of patients with hepatic GSD or IKH treated at the Beatrix Children's Hospital Groningen, who had been referred to SeysCentra, a specialist centre for the treatment of eating problems. Additionally, a systematic literature review has been performed to identify instruments to quantify patient-reported outcome measures of psychosocial problems in hepatic GSD patients. Sixteen patients from 12 families were included with ages ranging between 3 and 24 years. Five out of sixteen patients were diagnosed with Avoidant/Restrictive Food Intake Disorder and six patients showed characteristics of this disorder. Fourteen patients experienced sleeping problems, and 11 out of 12 parent couples experienced stress about the illness of their child. We subsequently identified 26 instruments to quantify patient-reported outcome measures for GSD patients. This study demonstrates that GSD patients can develop Avoidant/Restrictive Food Intake Disorder influencing quality of life at multiple domains. The identification of instruments to assess psychosocial wellbeing is an important step towards a standard set of patient-reported outcome measures.

Validation of the nine item ARFID screen (NIAS) subscales for distinguishing ARFID presentations and screening for ARFID

OBJECTIVE

The Nine Item Avoidant/Restrictive Food Intake Disorder (ARFID) Screen (NIAS) has three subscales aligned with ARFID presentations but clinically validated cutoff scores have not been identified. We aimed to examine NIAS subscale (picky eating, appetite, fear) validity to: (1) capture clinically-diagnosed ARFID presentations; (2) differentiate ARFID from other eating disorders (other-ED); and (3) capture ARFID symptoms among individuals with ARFID, individuals with other-ED, and nonclinical participants.

METHOD

Participants included outpatients (ages 10-76 years; 75% female) diagnosed with ARFID (n = 49) or other-ED (n = 77), and nonclinical participants (ages 22-68 years; 38% female, n = 40). We evaluated criterion-related concurrent validity by conducting receiver operating curve (ROC) analyses to identify potential subscale cutoffs and by testing if cutoffs could capture ARFID with and without use of the Eating Disorder Examination-Questionnaire (EDE-Q).

RESULTS

Each NIAS subscale had high AUC for capturing those who fit versus do not fit each ARFID presentation, resulting in proposed cutoffs of ≥10 (sensitivity = .97, specificity = .63), ≥9 (sensitivity = .86, specificity = .70), and ≥ 10 (sensitivity = .68, specificity = .89) on the NIAS-picky eating, NIAS-appetite, and NIAS-fear subscales, respectively. ARFID versus other-ED had high AUC on the NIAS-picky eating (≥10 proposed cutoff), but not NIAS-appetite or NIAS-fear subscales. NIAS subscale cutoffs had a high association with ARFID diagnosis, but only correctly classified other-ED in combination with EDE-Q Global <2.3.

DISCUSSION

To screen for ARFID, we recommend using a screening tool for other-ED (e.g., EDE-Q) in combination with a positive score on any NIAS subscale (i.e., ≥10, ≥9, and/or ≥10 on the NIAS-picky eating, NIAS-appetite, and NIAS-fear subscales, respectively).

A Moving Target: How We Define Avoidant/Restrictive Food Intake Disorder Can Double Its Prevalence

Objective: The DSM-5 criteria for avoidant/restrictive food intake disorder (ARFID) include ambiguities. Diagnostic criteria that allow for clinical judgment are essential for clinical practice. However, ambiguities can have major implications for treatment access and comparability and generalizability of research studies. The purpose of this study was to determine the degree to which distinct operationalizations of the diagnostic criteria for ARFID contribute to differences in the frequency of individuals who are eligible for the ARFID diagnosis. Methods: Because criteria B, C, and D are rule-outs, we focused on criterion A, identified 19 potential operational definitions, and determined the extent to which these different methods impacted the proportion of individuals who met criteria for ARFID in a sample of children, adolescents, and young adults (n = 80; September 2016-February 2020) enrolled in an avoidant/restrictive eating study. Results: Within each criterion, the proportion of individuals meeting diagnostic criteria differed significantly across the methodologies (all P values < .008). Using the strictest definition of each criterion, 50.0% (n = 40) of participants met criteria for ARFID. In contrast, under the most lenient definition of each criterion, the number nearly doubled, resulting in 97.5% (n = 78) meeting ARFID criteria. Conclusions: Comparison of diagnostic definitions for ARFID among children, adolescents, and young adults confirmed a broad range of statistically distinct proportions within a single sample. Our findings support the need for additional contextual support and consensus among disciplines on operationalization in both research and clinical settings.

Treatment Needs and Rates of Mental Health Comorbidity in Adolescent Patients With ARFID

The purpose of this paper is to provide a descriptive overview of a single-center ARFID-specific pilot clinic that sought to better understand the specific needs of patients with ARFID including rates of comorbidities, and to gain insight into treatment requirements. A retrospective cohort study was completed on patients meeting criteria for ARFID admitted to a specialized pilot clinic within a tertiary care hospital. Over an 18 month period, a total of 26 patients were assessed and had follow-up data for a 12 month period. Patients presented with heterogeneous manifestations of ARFID and high rates of comorbid mood and anxiety disorders were noted. Treatment plans were tailored to meet individual needs at assessment and over the treatment period. A multidisciplinary approach was most often administered, including a combination of individual therapy, family therapy, medical monitoring, and prescribed medications. Only 30% of patients were treated exclusively by therapists on the eating disorder team. The experiences gained from this pilot study highlight the need for specialized resources for assessment and treatment of patients with ARFID, the importance of a multidisciplinary approach to treatment, and the necessity of utilization of ARFID-specific measures for program evaluation purposes.

Avoidant/restrictive food intake disorder: Psychopathological similarities and differences in comparison to anorexia nervosa and the general population

INTRODUCTION

Avoidant/restrictive food intake disorder (ARFID) categorises patients with selective and/or restrictive eating patterns in the absence of distorted cognition concerning weight, food, and body image.

OBJECTIVE

To examine the sociodemographic and clinical profile of patients with ARFID in comparison to those with anorexia nervosa (AN) and to a non-clinical group (NCG).

METHOD

A descriptive, observational, comparative study made up of three groups (ARFID, AN and NCG). Ninety-nine children and adolescents were analyzed by means of a semi-structured diagnostic interview and questionnaires on depression, anxiety, clinical fears and general psychopathology.

RESULTS

The ARFID group was significantly younger (10.8 vs. 14.1 years of age), with a greater proportion of males (60.6% vs. 6.1%), an earlier onset of illness (6.2 vs. 13.4 years of age), and a longer period of evolution of the illness (61.2 vs. 8.4 months) compared to the AN group. Clinically, patients with ARFID showed greater medical (42.4% vs. 12.1%) and psychiatric (81.8% vs. 33.3%) comorbidity-assessed with a semi-structured diagnostic interview-greater clinical fear (p < 0.005), more attention problems (p < 0.005) and fewer symptoms of anxiety and depression (p < 0.005)-measured with self-report questionnaires.

CONCLUSIONS

ARFID is a serious disorder with a significant impact on the physical and mental health of the pediatric population. Likewise, some of these physical and mental conditions may be a risk factor in developing ARFID. Attention problems and clinical fears in ARFID, and the greater presence of internalised symptoms in AN, were the main differences found in the psychopathological profiles.

Avoidant/restrictive food intake disorder symptoms are frequent in patients presenting for symptoms of gastroparesis

INTRODUCTION

Patients with symptoms of gastroparesis/dyspepsia often avoid foods or restrict eating for symptom management. There is growing interest in understanding risk for feeding/eating disorders (FEDs) like avoidant/restrictive food intake disorder (ARFID). Among patients presenting with gastroparesis/dyspepsia symptoms, we aimed to determine: (a) FED symptom frequency, and (b) relation of FED symptoms to gastrointestinal symptom severity and gastric retention abnormalities.

METHODS

Adult patients (N = 288; 78% female) referred for gastroparesis/dyspepsia symptoms at two academic medical centers from January 2018-February 2019 completed self-report surveys for gastrointestinal symptom severity and FED symptoms. Gastric retention data were available for 210 patients, using 4-hour EggBeater gastric emptying scintigraphy (GES).

RESULTS

Clinically significant FED symptoms were present in 158 patients (54.9%). Interestingly, 115 patients (39.9%) met conservative self-report cutoff for ARFID symptoms, with 67 (23.3%) patients having documented psychosocial/medical impairment. Of those with survey data for other FEDs (n = 239), only 28 patients (11.7%) had restrictive eating disorders (anorexia nervosa; unspecified FED). Likelihood of having FED symptoms was significantly associated with greater gastroparesis symptom severity (OR = 2.23, P < .001), but not GES. In addition, gastroparesis symptom severity was moderately and significantly associated with greater ARFID symptom severity (b = 0.45, P < .001), but neither GES nor other FED symptoms.

DISCUSSION

In patients presenting with gastroparesis/dyspepsia symptoms, FED symptoms were frequent (55%), particularly ARFID, and were associated with greater gastrointestinal symptom severity, but not gastric retention. Gastroparesis/dyspepsia symptoms may mimic FEDs, particularly ARFID. Clinicians should be cautious about diagnosing ARFID in gastroparesis/dyspepsia patients, and screening for ARFID could assist behavioral treatment referral.

Comparing stigmatizing attitudes toward anorexia nervosa, binge-eating disorder, avoidant-restrictive food intake disorder, and subthreshold eating behaviors in college students

OBJECTIVE

The relative stigmatization of various eating disorders (ED) remains understudied, and there is no research examining stigma toward avoidant-restrictive food intake disorder (ARFID) or adult picky eating. The present study examined the relative stigmatization of various EDs and the subthreshold eating behaviors that are risk factors for their development, and the relation of gender differences to stigma.

METHOD

A sample of 1147 college students was recruited and completed the study online. Participants were randomized and presented with a vignette representing a clinical ED [anorexia nervosa (AN), binge-eating disorder (BED), ARFID] or a subthreshold eating presentation (restrained eating, emotional eating, picky eating). Participants completed measures of stigma and perceived psychopathology. A 6 (target eating behavior) × 2 (target gender) × 2 (participant gender) MANOVA and subsequent ANOVAs were employed.

RESULTS

Measures of stigma revealed significant main effects for eating presentation and participant gender. There were also significant interactions between eating presentation and participant gender. Men reported more stigmatizing views toward BED and AN compared to women. Overall, restraint was stigmatized less than the other targets, and AN received the greatest amount of stigma. Participants rated BED and AN as more pathological than all other targets, emotional eating and ARFID as more pathological than picky eating and restrained eating, and restrained eating as less pathological than all other targets.

CONCLUSIONS

Future research should explore how the severity of eating behavior influences perceptions and at what level behaviors such as restriction are recognized as disordered.

Characteristics of avoidant/restrictive food intake disorder in a general paediatric inpatient sample

OBJECTIVE

Although patients with avoidant/restrictive food intake disorder (ARFID) often consult general paediatric services initially, existing literature mostly concentrated on intensive eating disorder treatment settings. This cross-sectional study sought to describe symptoms of ARFID and their associations with eating disorder psychopathology, quality of life, anthropometry, and physical comorbidities in a general paediatric sample.

METHODS

In N = 111 patients (8-18 years) seeking treatment for physical diseases, prevalence of ARFID-related restrictive eating behaviours was estimated by self-report and compared to population-based data (N = 799). Using self-report and medical record data, further ARFID diagnostic criteria were evaluated. Patients with versus without symptoms of ARFID based on self-report and medical records were compared in diverse clinical variables.

RESULTS

The prevalence of self-reported symptoms of ARFID was not higher in the inpatient than population-based sample. Only picky eating and shape concern were more common in the inpatient than population-based sample. Although 68% of the inpatient sample reported any restrictive eating behaviours, only 7% of patients showed symptoms of ARFID based on medical records in addition to self-report, particularly those with underweight, without significant effects for age, sex, and medical diagnoses.

DISCUSSION

The study revealed the importance of considering ARFID within the treatment of children and adolescents with physical diseases, especially for those with underweight. Further research is needed to replicate the findings with interview-based measures and to investigate the direction of effects in ARFID and its physical correlates.

SPACE-ARFID: A pilot trial of a novel parent-based treatment for avoidant/restrictive food intake disorder

OBJECTIVE

This pilot trial aimed to assess the feasibility, acceptability, treatment-satisfaction, and preliminary efficacy of Supportive Parenting for Anxious Childhood Emotions adapted for avoidant/restrictive food intake disorder (SPACE-ARFID). SPACE-ARFID is a novel outpatient parent-based treatment that focuses on parental responses to child problematic eating habits and aims to promote food-related flexibility.

METHOD

Parents of 15 children (ages 6-14 years) with ARFID participated in 12 weekly sessions of SPACE-ARFID. Feasibility and acceptability were assessed by calculating enrollment, attendance, attrition, and adverse events. Treatment-satisfaction was assessed with the Client Satisfaction Questionnaire (CSQ-8), administered posttreatment. ARFID symptom severity and impairment and family accommodation were assessed at baseline and posttreatment.

RESULTS

Of 17 eligible families, 15 (88.24%) elected to participate in the trial. Of the 15 participating families, all except for 1 (6.67%) completed all 12 weekly treatment sessions. Both parents and children rated the treatment as highly satisfactory. ARFID symptom severity and impairment as well as family accommodation were significantly reduced from pre- to posttreatment. Increases in food-related flexibility are described.

DISCUSSION

Findings provide preliminary evidence that SPACE-ARFID, a parent-based treatment that focuses on parental responses to the ARFID symptoms is feasible, acceptable, and satisfactory and produces improvement in clinical outcomes.

Prevalence and Characteristics of Avoidant/Restrictive Food Intake Disorder in Adult Neurogastroenterology Patients

BACKGROUND & AIMS

Avoidant/restrictive food intake disorder (ARFID) is a feeding and eating disorder that is characterized by avoidant or restrictive eating not primarily motivated by body shape or weight concerns. We aimed to determine the frequency of ARFID symptoms and study its characteristics and associated gastrointestinal symptoms.

METHODS

We conducted a retrospective review of charts from 410 consecutive referrals (ages, 18-90 y; 73.0% female) to a tertiary care center for neurogastroenterology examination, from January through December 2016. Blinded coders (n = 4) applied Diagnostic and Statistical Manual of Mental Disorders, 5th edition, criteria for ARFID, with substantial diagnostic agreement (κ = 0.66).

RESULTS

Twenty-six cases (6.3%) met the full criteria for ARFID and 71 cases (17.3%) had clinically significant avoidant or restrictive eating behaviors with insufficient information for a definitive diagnosis of ARFID. Of patients with ARFID symptoms (n = 97), 90 patients (92.8%) cited fear of gastrointestinal symptoms as motivation for their avoidant or restrictive eating. A series of binary logistic regressions showed that the likelihood of having ARFID symptoms increased significantly in patients with eating- or weight-related complaints (odds ratio [OR], 5.09; 95% CI, 2.54-10.21); with dyspepsia, nausea, or vomiting (OR, 3.59; 95% CI, 2.04-6.32); with abdominal pain (OR, 4.72; 95% CI, 1.87-11.81); or with lower GI diagnoses (OR, 2.40; 95% CI, 1.34-4.32).

CONCLUSIONS

In a retrospective study of patients undergoing neurogastroenterology examinations, we found ARFID symptoms to be related most frequently to fear of gastrointestinal symptoms. Patients undergoing neurogastroenterology or motility examinations should be evaluated for symptoms of ARFID, particularly when providers consider dietary interventions.

Childhood Avoidant/Restrictive Food Intake Disorder: Review of Treatments and a Novel Parent-Based Approach

Avoidant/Restrictive food intake disorder (ARFID) is characterized by dietary restrictions that are not based on weight or shape concerns but that result in marked interference in feeding, growth, or psychosocial functioning (American Psychiatric Association, 2013; Eddy et al., 2019). The aim of the current article was to review available reports of treatment for childhood ARFID published since its inclusion in the 5th edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM), and to introduce a novel parent-based treatment for child ARFID through a case presentation. Empirical support for psychosocial treatments for child ARFID currently stems from two small-scale pilot randomized control trials, one pilot open trial, case reports, case series, and retrospective chart reviews. Treatment approaches for outpatient care generally apply family-based therapy, child-centered cognitive behavioral therapy, or parent-based behavioral approaches. SPACE-ARFID is a novel outpatient parent-based treatment that focuses on parental responses to child problematic eating habits. SPACE-ARFID aims to promote flexibility and adjustment in food related situations. The treatment helps parents to systematically reduce family accommodation, or changes that they make to their own behavior to help their child avoid or alleviate distress related to the disorder, while increasing supportive responses to the child's symptoms.

Classifying and characterizing Chinese young adults reporting picky eating: A latent profile analysis

OBJECTIVE

Picky eating (PE) is common across the lifespan and related to psychosocial impairment and limited dietary variety. However, research about PE in non-Western countries is limited. Because eating behaviors may differ by culture, operationalizing PE in non-Western countries (e.g., China) is needed. The present study aimed to replicate two previous studies identifying PE profiles in Western countries by using latent profile analysis (LPA) to classify and characterize adults reporting picky eating in a Chinese sample.

METHOD

A sample of 1,068 Chinese young adults completed a battery of questionnaires including the adult eating behavior questionnaire (AEBQ). LPA was utilized to identify eating profiles. The three-step approach was used to examine predictors of latent memberships and profile differences on various self-reported measures.

RESULTS

The best fit was a four-profile solution, with two picky eating profiles emerging: picky eating and severe picky eating. Compared to those in the other two profiles, participants in the picky eating profile (19.4%) and severe picky eating profile (3.3%) had significantly higher scores on self-reported eating disorder symptoms and psychological distress, and lower scores on self-reported food-related life satisfaction. Relative to the picky eating profile, participants in the severe picky eating profile reported significantly greater self-reported eating disorder symptoms, psychological distress, and food-related dissatisfaction.

DISCUSSION

Characterizing PE profiles is an important step toward understanding eating behaviors among Chinese young adults. Identifying various eating profiles has implications for future research related to PE, including the development of diagnostic tools and interventions to address PE in a Chinese context.

Prevalence and correlates of psychiatric comorbidities in children and adolescents with full and subthreshold avoidant/restrictive food intake disorder

OBJECTIVE

We aimed to characterize the current and lifetime prevalence of comorbid psychiatric diagnoses and suicidality in treatment- and nontreatment-seeking individuals with full and subthreshold avoidant/restrictive food intake disorder (ARFID). We also sought to examine unique associations between the three DSM-5 ARFID profiles (i.e., sensory sensitivity, fear of aversive consequences, and lack of interest in food or eating) and specific categories of psychiatric diagnoses and suicidality.

METHOD

We conducted structured clinical interviews with 74 children and adolescents with full or sub threshold ARFID to assess the presence of comorbid psychiatric diagnoses, suicidality, and the severity of each of the three ARFID profiles.

RESULTS

Nearly half of the sample (45%) met criteria for a current comorbid psychiatric diagnosis, and over half (53%) met criteria for a lifetime comorbid diagnosis. A total of 8% endorsed current suicidality and 14% endorsed lifetime suicidality. Severity in the sensory sensitivity profile was uniquely associated with greater odds of comorbid disorders in the neurodevelopmental, disruptive, and conduct disorders category; the anxiety, obsessive-compulsive, and trauma-related disorders category; and the depressive and bipolar-related disorders category. Severity in the fear of aversive consequences profile was associated with greater odds of disorders in the anxiety, obsessive-compulsive, and trauma-related disorders category.

DISCUSSION

Our findings underscore the severity of psychopathology among individuals with ARFID and related presentations, and also highlight the potential that shared psychopathology between specific ARFID profiles and other psychiatric disorders represent transdiagnostic constructs (e.g., avoidant behavior) that may be relevant treatment targets.

Feeding and eating disorders

Eating disorders (EDs) are a group of prevalent psychiatric illnesses with an onset in early to late adolescence-a time of significant neural development, physical and psychologic growth, and self-exploration. The etiology and neurobiology of EDs are not well understood, but EDs are recognized as brain-based illnesses with serious acute and long-term consequences if undertreated or ignored. Two EDs, anorexia nervosa (AN) and bulimia nervosa (BN), have historically been the primary EDs of focus. The DSM-5 updated diagnostic criteria for these disorders added two more: binge-eating disorder (BED) and avoidant/restrictive food intake disorder (ARFID). EDs severely impact males as well as females across the weight spectrum. Comorbidity is high; mortality rates for AN and BN are the highest in psychiatric conditions and higher than many medical conditions. Several treatment options are available to treat an ED ranging from inpatient hospitalization to outpatient services and different psychotherapy options. This chapter reviews the diagnostic criteria, clinical presentation, and treatment for these disorders. Where available, sex differences and developmental considerations will be noted. For all EDs, early recognition and swift treatment are necessary to avoid a chronic course.

Introduction to a special issue on child and adolescent feeding and eating disorders and avoidant/restrictive food intake disorder

OBJECTIVE

We are very pleased to introduce a special issue of the International Journal of Eating Disorders on child and adolescent feeding and eating disorders and avoidant/restrictive food intake disorder (ARFID).

METHOD

Contributions focused on five main themes: (1) the definition and assessment of ARFID; (2) the clinical phenomenology of ARFID; (3) similarities and differences between ARFID and anorexia nervosa (AN); (4) novel treatments for ARFID; and (5) new ideas for improving treatment outcomes in AN.

RESULTS

These papers highlight the importance of clear operationalization and measurement of the ARFID diagnostic criteria. ARFID phenotypes bear both similarities and important differences in clinical profile, course, and outcome from AN. Findings suggest the utility of adapting existing treatments for restrictive eating disorders to apply to ARFID and engender clinical creativity to move beyond existing treatments and develop novel interventions that address the heterogeneity of ARFID. Furthermore, burgeoning understanding of ARFID offers the potential that novel treatments for ARFID may also be applied to improve outcomes for AN.

DISCUSSION

This collection of papers features child and adolescent feeding and eating disorder patient groups that have been understudied and we hope that this catalyzes clinical research in these important presentations.

An Inpatient Observational Study: Characteristics And Outcomes Of Avoidant/Restrictive Food Intake Disorder (ARFID) In Children And Adolescents In Japan

PURPOSE

To determine the clinical characteristics and course of severe avoidant/restrictive food intake disorder (ARFID) in hospitalized children and adolescents and compare them with those of patients with restricting-type anorexia nervosa (R-AN).

PATIENTS AND METHODS

We conducted a retrospective chart review of inpatients diagnosed with ARFID or R-AN based on the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, at Jichi Children's Medical Center Tochigi between April 1, 2007 and March 31, 2017. We compared the characteristics of the ARFID and R-AN patients at admission, during hospitalization, and after discharge.

RESULTS

Both the ARFID (n=13) and R-AN (n=79) patients required hospitalization for their medically unstable state. The features of ARFID group included concern about the aversive consequences of eating and avoidance of eating due to sensory concerns. Significant differences were found at admission between ARFID and R-AN groups in age (10.7 vs 12.7 years), family history of mental disorders (46.2% vs 17.7%), comorbid developmental disorders (6 vs 3 cases), and the time from onset to admission (3.9 vs 6.3 months). The body weight status, % ideal body weight (%IBW), % expected body weight (%EBW), <75% IBW rate, and <75% EBW rate did not differ significantly between the two groups at admission or discharge. The duration of post-discharge outpatient follow-up treatment did not differ significantly between ARFID and R-AN groups (15.3 vs 18.4 months); however, ARFID group recovery rate was significantly higher than that of R-AN group (77% vs 43%). The reasons that the patients with ARFID had significantly better outcomes than the R-AN patients remain unclear. Compared to those in previous studies, the present patients were younger and demonstrated better outcomes. Our results indicate that the body weight status is similar between ARFID and R-AN patients, but the ARFID patients achieved better outcomes.

CONCLUSION

These findings suggest that early onset in childhood, early disease recognition, and early intervention are important factors for achieving better outcomes for patients with ARFID.