Multiple psychological factors predict abdominal pain severity in children with irritable bowel syndrome

Anxiety disorders presenting as gastrointestinal symptoms in children - a scoping review

Functional gastrointestinal disorders (FGID) and their association with anxiety disorders in children significantly impact a child's functioning and treatment response. This study aimed to scope the evidence of anxiety disorders manifesting as FGID in children up to 16 years old. A comprehensive search strategy was conducted on Embase (1974-2024), MEDLINE (via EBSCOHost 1946-2024), and APA PsycINFO (via EBSCOHost 1967-2024). Articles were retrieved, screened, and assessed for bias using the GRADE system. Our initial search yielded 1984 articles. After screening titles and abstracts, 53 articles remained. Full-text screening further narrowed this to 4 eligible studies. The first study found that anxiety indirectly influenced abdominal pain severity in children with irritable bowel syndrome. The second study reported an association between anxiety and abdominal pain but found that anxiety might not predict abdominal pain in later childhood. The third study suggested FGID could be a risk factor for anxiety, with higher anxiety rates in children with FGID compared to those without. The fourth study found no significant difference in pain intensity between children with functional abdominal pain disorders (FAPD) alone and those with FAPD and anxiety. The reviewed studies indicate a relationship between anxiety and FGID but lack clarity on directionality or causation. The limited number of studies calls for more research, including case-control studies with large sample sizes and longitudinal cohort studies to investigate the incidence and causation.

A Scoping Review of Sleep Disturbances in Children and Adolescents with Abdominal Pain Disorders

Objective/Purpose/Aim

Sleep disturbances have been implicated as contributors to chronic pain. We undertook this review to assess the current literature regarding sleep disturbances in youth with chronic abdominal pain. We assessed studies evaluating prevalence, pathophysiology, and/or outcomes to identify gaps in knowledge and to determine whether there is an evidential basis for sleep interventions in this population.

Materials and Methods

Utilizing Google Scholar, Pub Med, SCOPUS, and Embase, we searched using the terms "sleep disturbances" AND ("abdominal pain"/exp OR "abdominal pain") AND ([adolescent]/lim OR [school]/lim). Articles were included if they contained data regarding sleep disturbance prevalence, pathophysiology, or relationships to outcome. After two independent review, 32 manuscripts were included in this review.

Results

Based on their high prevalence (19-75% of abdominal pain cohorts), there is sufficient evidence to recommend routine screening for sleep disturbances in youth with chronic abdominal pain. There is a broad range of negative physiologic and emotional effects of sleep deprivation.

Conclusion

Sleep disturbances are common in youth with chronic abdominal pain. Sleep interventions are appropriate when disturbances are identified though it is not yet known the degree to which these interventions will affect the pain experience and resultant disability. Future studies should focus on evaluation of specific sleep interventions on patient outcomes.

Anxiety and Depression in Children with Irritable Bowel Syndrome-A Narrative Review

Irritable bowel syndrome (IBS) is one of the most common functional gastrointestinal disorders diagnosed in children. It has a complex pathophysiology with several potential risk factors, including psychological disorders like anxiety and depression. This paper aimed to find genetic, pathophysiological, and clinical links between psychological factors (mainly anxiety and depression) and IBS in children. Impairment of the gut-brain communication and signalling of serotonin is responsible for both gastrointestinal and psychological disorders. Childhood psychological events seem to be linked to gastrointestinal symptoms not only in childhood but also in adulthood. Evidence of the efficacy of therapies targeting psychological disorders (antidepressant, hypnotherapy, and cognitive behavioural therapy) in children with IBS was evaluated. Further studies that use updated criteria for IBS and uniform questionnaires and outcome measures are needed to draw reliable conclusions regarding the connection between psychological factors and IBS.

Pediatric to adult transition care in neurogastroenterology and motility: A position paper from the American Neurogastroenterology and Motility Society and European Society of Neurogastroenterology and Motility

Transition services-programs that support adolescents and young adults (AYAs) as they move from a child-centered to a more autonomous, adult-orientated healthcare system-have been associated with improved short- and long-term healthcare outcomes. Unfortunately, there is a paucity of evidence exploring transition services within the neurogastroenterology and motility (NGM) field. The overall aim of this article, endorsed by the American Neurogastroenterology and Motility Society and European Society of Neurogastroenterology and Motility, is to promote a discussion about the role of transition services for patients with NGM disorders. The AYAs addressed herein are those who have: (a) a ROME positive disorder of gut-brain interaction (DGBI), (b) a primary or secondary motility disorder (including those with motility disorders that have been surgically managed), or (c) an artificial feeding requirement (parenteral or enteral tube feeding) to manage malnutrition secondary to categories (a) or (b). The issues explored in this position paper include the specific physical and psychological healthcare needs of patients with NGM disorders; key healthcare professionals who should form part of a secondary care NGM transition service; the triadic relationship between healthcare professionals, caregivers, and patients; approaches to selecting patients who may benefit most from transition care; methods to assess transition readiness; and strategies with which to facilitate transfer of care between healthcare professionals. Key areas for future research are also addressed, including the construction of NGM-specific transition readiness questionnaires, tools to assess post-transfer healthcare outcomes, and educational programs to train healthcare professionals about transition care in NGM.

Italian guidelines for the management of irritable bowel syndrome in children and adolescents : Joint Consensus from the Italian Societies of: Gastroenterology, Hepatology and Pediatric Nutrition (SIGENP), Pediatrics (SIP), Gastroenterology and Endoscopy (SIGE) and Neurogastroenterology and Motility (SINGEM)

The irritable bowel syndrome (IBS) is a functional gastrointestinal disorder (FGID), whose prevalence has widely increased in pediatric population during the past two decades. The exact pathophysiological mechanism underlying IBS is still uncertain, thus resulting in challenging diagnosis and management. Experts from 4 Italian Societies participated in a Delphi consensus, searching medical literature and voting process on 22 statements on both diagnosis and management of IBS in children. Recommendations and levels of evidence were evaluated according to the grading of recommendations, assessment, development, and evaluation (GRADE) criteria. Consensus was reached for all statements. These guidelines suggest a positive diagnostic strategy within a symptom-based approach, comprehensive of psychological comorbidities assessment, alarm signs and symptoms' exclusion, testing for celiac disease and, under specific circumstances, fecal calprotectin and C-reactive protein. Consensus also suggests to rule out constipation in case of therapeutic failure. Conversely, routine stool testing for enteric pathogens, testing for food allergy/intolerance or small intestinal bacterial overgrowth are not recommended. Colonoscopy is recommended only in patients with alarm features. Regarding treatment, the consensus strongly suggests a dietary approach, psychologically directed therapies and, in specific conditions, gut-brain neuromodulators, under specialist supervision. Conditional recommendation was provided for both probiotics and specific fibers supplementation. Polyethylene glycol achieved consensus recommendation for specific subtypes of IBS. Secretagogues and 5-HT4 agonists are not recommended in children with IBS-C. Certain complementary alternative therapies, antispasmodics and, in specific IBS subtypes, loperamide and rifaximin could be considered.

Psychological distress and coping efficacy in children with disorders of gut-brain interaction

BACKGROUND

Multiple psychological factors influence disorders of gut-brain interaction (DGBIs). We aimed to evaluate psychological distress in Colombian schoolchildren with and without DGBIs.

METHODS

We included children ages 8-18 years without organic medical conditions from largest regional public schools in Colombia. Children completed Spanish versions of Rome III diagnostic questionnaire for DGBIs, State Trait Anxiety Inventory for Children (STAIC), Children's Somatization Inventory (CSI), and a measure of coping efficacy. These data, demographic and socioeconomic characteristics, were compared between children with DGBIs and healthy peers. Exploratory analyses investigated differences between youth with symptoms of functional abdominal pain disorders (FAPDs) compared with healthy peers.

KEY RESULTS

Of 1496 children, 281 (mean age 12.9 ± 2.2 years, 49.8% females) self-reported criteria for DGBIs and 125 reported (44.5%) FAPDs. Children with DGBIs had higher trait anxiety, emotional sensitivity, somatization including GI, non-GI, pain-related, and non-pain-related subscales (p < 0.001 each) and lower coping efficacy (p = 0.02) compared to healthy peers. Females had higher trait anxiety and somatization (p = 0.04 and p = 0.005, respectively). State and trait anxiety and coping efficacy differed based on location in children with DGBIs (p = 0.02, p = 0.03, and p < 0.001, respectively). Children with FAPDs had higher trait anxiety (p = 0.02) and somatization (p < 0.001) compared to healthy youth.

CONCLUSIONS & INFERENCES

Children with DGBIs had higher anxiety, emotional sensitivity, and somatization, and lower coping efficacy compared with healthy youth. This highlights the importance of appraising psychological distress characteristics as well as incorporating conflict resolution, assertiveness training, and resilience building during the treatment of DGBIs.

Prospective study of the effect of auricular percutaneous electrical nerve field stimulation on quality of life in children with pain related disorders of gut-brain interaction

Background

Disorders of the Gut-Brain Interaction (DGBIs) account for 50% of pediatric gastrointestinal (GI) consultations. Children with DGBIs have worse quality of life (QoL) than those with organic GI disorders such as inflammatory bowel disease and gastroesophageal reflux disease. Pediatric DGBIs patients, especially those with chronic abdominal pain (AP), have impaired QoL and increased psychological distress in the form of anxiety and depression. Percutaneous Electrical Nerve Field Stimulation (PENFS) therapy has been shown to be effective in improving symptoms and functioning in children with DGBIs. The treatment's impact on these patients' QoL is unknown.

Methods

This prospective study evaluated changes in QoL, gastrointestinal symptoms, functional disability, somatization, global health, anxiety, and depression in patients aged 11-18 years who received PENFS therapy (IB-stim, NeurAxis, Versailles, IN) for treatment of pain related DGBIs, once a week for four consecutive weeks.

Results

This study included 31 patients with an average age of 15.7 years (SD = 2); 80.6% were female. After PENFS therapy, patients reported significant reductions in abdominal pain, nausea severity, functional disability, somatization, and anxiety from baseline to week 4 (p < 0.05). Parents reported significant improvement in their child's QoL regarding physical function, psychosocial function, and generic core scale scores (p < 0.05). Parents also noted reduced abdominal pain, functional disability, and somatization. Average scores on the Patient-Reported Outcomes Measurement Information System (PROMIS) Global Health scale significantly improved based on both patient and parent reports (p < 0.05). Our patients' QoL was significantly lower than healthy controls at baseline and after treatment (p < 0.05).

Conclusion

Our research demonstrates that PENFS significantly enhances the QoL of children suffering from pain-related DGBIs, in addition to improvement in GI symptoms, daily functioning, somatization, global health, and psychological comorbidities. These findings demonstrate the effectiveness of PENFS and its potential to alleviate the suffering of countless children.

Bladder Pain Sensitivity Is a Potential Risk Factor for Irritable Bowel Syndrome

BACKGROUND

Although dysmenorrhea is a highly prevalent risk factor for irritable bowel syndrome (IBS), the factors underlying this risk are not fully understood. Prior studies support a hypothesis that repeated distressing menstrual pain promotes cross-organ pelvic sensitization with heightened visceral sensitivity.

AIMS

To further explore cross-organ pelvic sensitization we examined the association of dysmenorrhea, provoked bladder pain, and other putative factors with self-reported IBS-domain pain frequency and new onset after 1-year follow up.

METHODS

We measured visceral pain sensitivity with a noninvasive provoked bladder pain test in a cohort of reproductive-aged women, enriched for those reporting moderate-to-severe menstrual pain intensity but without any prior IBS diagnosis (n = 190). We analyzed the relationship between menstrual pain, provoked bladder pain, pain catastrophizing, anxiety, and depression with primary outcomes: (1) frequency of self-reported IBS-domain pain and (2) new onset of IBS-domain pain after 1-year follow up.

RESULTS

All hypothesized factors correlated with the frequency of IBS-domain pain (p's ≤ 0.038). In a cross-sectional model, only menstrual pain (standardized adjusted odds ratio 2.07), provoked bladder pain (1.49), and anxiety (1.90) were independently associated with IBS-domain pain ≥ 2 days/month (C statistic = 0.79). One year later, provoked bladder pain (3.12) was the only significant predictor of new onset IBS-domain pain (C statistic = 0.87).

CONCLUSION

Increased visceral sensitivity among women with dysmenorrhea could lead to IBS. Because provoked bladder pain predicted subsequent IBS, prospective studies should be performed to see if the early treatment of visceral hypersensitivity mitigates IBS.

"A source of empowerment and well-being": Experiences of a dance and yoga intervention for young girls with functional abdominal pain disorders

Background

Functional abdominal pain disorders are common among children and adolescents worldwide and effective treatments are needed to alleviate suffering for these children and their families. This study aimed to explore the experience of participating in a combined dance and yoga intervention from the perspectives of girls aged 9-13 years with functional abdominal pain disorders.

Materials and Methods

A randomized controlled trial called Just in TIME (Try, Identify, Move and Enjoy) recruited 121 girls aged 9-13 years with functional abdominal pain disorders. The eight-month intervention combined dance and yoga twice a week, focusing on enjoyment, socialization and playful creativity in an undemanding and non-judgemental environment. The intervention group comprised 64 girls, of whom 25 were purposefully selected for this qualitative interview study. Semi-structured interviews were conducted and analysed using qualitative content analysis with an inductive approach.

Results

The girls' experiences of the Just in TIME intervention can be described as "A source of empowerment and well-being which facilitated personal growth and new ways of engaging in life". The main category was derived from six generic categories: "A sense of belonging", "Joy and emotional expression through movement", "Relief from pain", "More self-confident", "More active in daily life" and "A sense of calm."

Conclusions

Regular participation in an eight-month intervention with combined dance and yoga in a supportive and non-judgemental atmosphere can ease pain and strengthen inner resources, resulting in empowerment, well-being and a more active life for girls with functional abdominal pain disorders.

Trial registration

The Just in TIME study is available online at clinicaltrials.gov, ID: NCT02920268.

Ratio of Omega-6/Omega-3 Polyunsaturated Fatty Acids Associated With Somatic and Depressive Symptoms in People With Painful Temporomandibular Disorder and Irritable Bowel Syndrome

Somatic symptom disturbance is among the strongest predictors of painful temporomandibular disorder (TMD). Related psychological constructs, such as anxiety and depression, respond therapeutically to omega-3 polyunsaturated fatty acids (PUFAs) in clinical trials. This cross-sectional study investigated associations between the omega-6/omega-3 PUFA ratio and somatic symptom disturbance and depressive symptoms in a community-based sample of 501 adults and determined whether these associations differed between adults with and without TMD or irritable bowel syndrome (IBS). Liquid chromatography tandem mass spectrometry quantified PUFAs in circulating erythrocytes. Somatic symptoms and depression were quantified using Symptom Checklist-90-Revised subscales. Presence or absence of TMD and IBS, respectively, were determined by clinical examination and Rome III screening questions. The standardized beta coefficient for the omega-6/omega-3 long-chain PUFA ratio was 0.26 (95% confidence limits (CL): 0.08, 0.43) in a multivariable linear regression model in which somatic symptom disturbance was the dependent variable. When modelling depressive symptoms as the dependent variable, the standardized beta coefficient was 0.17 (95% CL:0.01, 0.34). Both associations were stronger among TMD cases and IBS cases than among non-cases. Future randomized control trials that lower the omega-6/omega-3 PUFA ratio could consider somatic or depressive symptoms as a therapeutic target for TMD or IBS pain. PERSPECTIVE: In people with TMD or IBS, a high n-6/n-3 PUFA ratio was positively associated with somatic symptom disturbance and depressive symptoms. Both measures of psychological distress were elevated in people with painful TMD and IBS. Future randomized clinical trials will determine whether lowering the n-6/n-3 ratio is therapeutic for pain.

Effect of percutaneous electrical nerve field stimulation on mechanosensitivity, sleep, and psychological comorbidities in adolescents with functional abdominal pain disorders

BACKGROUND

Percutaneous electrical nerve field stimulation (PENFS) improves symptoms in adolescents with functional abdominal pain disorders (FAPDs). However, little is known about its impact on sleep and psychological functioning. We evaluated the effects of PENFS on resting and evoked pain and nausea, sleep and psychological functioning, and long-term outcomes.

METHODS

Patient ages 11-19 years with FAPD requiring PENFS as standard care were recruited. Evoked pain was elicited by a Water Load Symptom Provocation Task (WL-SPT) before and after four weeks of treatment. Pain, gastrointestinal symptoms, sleep, somatic symptoms, and physical and psychological functioning were assessed. Actigraphy was used to measure daily sleep-wake patterns.

KEY RESULTS

Twenty patients (14.3 ± 2.2 years old) with FAPD were enrolled. Most patients were females (70%) and white (95%). During pain evoked by WL-SPT, visual analog scale (VAS) pain intensity and nausea were lower following PENFS compared with baseline (p = 0.004 and p = 0.02, respectively). After PENFS, resting VAS pain unpleasantness (p = 0.03), abdominal pain (p < 0.0001), pain catastrophizing (p = 0.0004), somatic complaints (0.01), functional disability (p = 0.04), and anxiety (p = 0.02) exhibited significant improvements, and some were sustained long-term. Self-reported sleep improved after PENFS (p's < 0.05) as well as actigraphy-derived sleep onset latency (p = 0.03).

CONCLUSIONS AND INFERENCES

We demonstrated improvements in resting and evoked pain and nausea, sleep, disability, pain catastrophizing, somatic complaints, and anxiety after four weeks of PENFS therapy. Some effects were sustained at 6-12 months post-treatment. This suggests that PENFS is a suitable alternative to pharmacologic therapy.

The effect of self-management online modules plus nurse-led support on pain and quality of life among young adults with irritable bowel syndrome: A randomized controlled trial

BACKGROUND

Irritable bowel syndrome is a chronic pain condition that needs life-long self-management. However, the effect of self-management among young adults with irritable bowel syndrome is limited.

OBJECTIVES

This study aimed to examine the effect of a nurse-led self-management program on pain, symptoms, and quality of life among young adults with irritable bowel syndrome.

DESIGN

A randomized controlled trial.

SETTINGS AND PARTICIPANTS

Eighty young adults with irritable bowel syndrome recruited from two campuses of a public university and two gastrointestinal clinics were randomly assigned into a self-management online education and learning modules alone group (Online Modules, n = 41) or a nurse-led one-to-one consultation plus self-management online education and learning modules group (Nurse-Led Online Modules, n = 39). Twenty-one healthy controls were also recruited from these two campuses.

METHODS

Both the intervention groups received ten online modules after baseline data collection. Participants in the Nurse-Led Online Modules group received additional three nurse-led one-to-one consultations at baseline, 6- and 12-week follow-ups. Self-reported pain, symptoms, quality of life, self-efficacy for managing chronic disease, and coping were measured at baseline, and 6- and 12-week follow-ups among the participants with irritable bowel syndrome. The healthy controls completed data collection of pain and symptoms at baseline and the 12-week follow-up. The intervention effects across study time points and the comparisons between the two interventional groups were analyzed using linear mixed models. A longitudinal mediation analysis was also conducted to explore the mediation effects of self-management mechanisms of the interventions.

RESULTS

Both the intervention groups showed significant interventional effects on decreasing pain intensity and pain interference and increasing quality of life at the 12-week follow-up (all p < 0.05). At the 12-week follow-up, the Nurse-Led Online Modules significantly reduced anxiety (p = 0.016) and had a significant greater improvement in quality of life than the Online Modules (p = 0.040). Increased self-efficacy mediated the intervention effect of the Nurse-Led Online Modules group on reducing pain interference and improving quality of life, while the effect of the Online Modules was mediated through decreasing inefficient coping strategy-catastrophizing.

CONCLUSIONS

This study showed that both the pain self-management online education and nurse-led intervention were effective for alleviating pain and improving quality of life among young adults with irritable bowel syndrome by targeting the self-management process. The nurse-led intervention had a better outcome than the online education alone in improving quality of life.

REGISTRATION NUMBER

NCT03332537.

Mediation of outcomes for cognitive behavioral therapy targeted to parents of children with Functional Abdominal Pain Disorders

OBJECTIVE

There is a large body of evidence for the efficacy of Cognitive Behavioral Therapy (CBT) in treating Functional Abdominal Pain Disorders (FAPD) in children. In most CBT interventions for FAPD, parents participate together with their children. However, only one study to date has examined targeting parents alone for treatment. The aim of the current study was to examine mediators of a parent-only CBT treatment incorporating social learning (SLCBT) for FAPD in children.

METHODS

We examined mediators of child outcomes in an existing randomized controlled trial (n = 316) of parent-only social learning CBT compared to an education condition. Hypothesized mediators (parental protectiveness, perceived threat of pain, catastrophizing) were assessed at 3 months post-treatment, and outcomes (parent ratings of disability, quality of life, school absences, and health care visits) were assessed at 6 months post-treatment. Mediation analyses were performed using Hayes' PROCESS macro.

RESULTS

Pain catastrophizing significantly mediated treatment effects for all outcomes (B ranged from -1.65 to 2.22). Reduction in pain threat was a significant mediator for all outcomes (B ranged from -1.84 to 3.13) except school absences and health care visits. Decrease in parental protectiveness mediated effects on disability and missed school (B ranged from -1.47 to 1.34). Mediation effects did not differ by in-person or remote delivery of SLCBT.

CONCLUSION

Changes in maladaptive parental thoughts and behaviors following parent-only SLCBT intervention appeared to mediate the effects of the intervention. Parental catastrophizing appears to be a particularly important target given that decreases in that variable mediated all outcomes.

Brain to Belly: Abdominal Variants of Migraine and Functional Abdominal Pain Disorders Associated With Migraine

Migraine is one of the most frequent causes of primary headache and 9% of children suffer from migraines. Most children will continue to experience migraine attacks as adults, therefore it is imperative that we have a thorough understanding of this major health issue. This article considers the so-called abdominal variants of migraine, which are more commonly seen in children rather than adults: abdominal migraine, cyclic vomiting syndrome, and infantile colic. Other functional abdominal pain disorders such as irritable bowel syndrome and functional dyspepsia have also been linked to migraine in clinical studies. The common pathophysiological root of these diseases seems to be the gut-brain axis mechanism. Abdominal variants of migraine are considered pediatric precursors of migraine whereas the functional abdominal pain disorders related to migraine seem to share a pathophysiological root with no temporarily link as for today. In this review we aim to describe the epidemiological background, the current pathophysiological theories and the relationship of each disease to migraine. This review is the first to compile abdominal variants of migraine and functional abdominal pain disorders associated with migraine and we endeavor to elucidate the broad spectrum of migraine-related episodes in children.

Behavioral Strategies for Irritable Bowel Syndrome: Brain-Gut or Gut-Brain?

Irritable bowel syndrome (IBS) is a disorder of gut-brain interaction (DGBI) that is associated with significant physical, emotional, and occupational burden. Factors such as early life stress, sleep disruption, maladaptive coping strategies, symptom hypervigilance, and visceral hypersensitivity negatively affect gut-brain communication and increase the likelihood of developing IBS or worsen IBS severity. Behavioral strategies, such as cognitive behavioral therapy, gut-directed hypnosis, and mindfulness-based treatments, have shown benefit in improving gastrointestinal (GI)-specific quality of life, as well as reducing GI symptoms. Partnering with a GI-specific mental health provider can assist gastroenterologists in providing comprehensive treatment of IBS and other DGBIs.

An Update on the Assessment and Management of Pediatric Abdominal Pain

Chronic abdominal pain is very common in children and adolescent and results in high personal and social costs. Most youth with chronic abdominal pain fulfill criteria for a functional abdominal pain disorder (FAPD) as defined by Rome criteria. These are complex conditions with a wide array of biological, psychological, and social factors contributing to the experience of pain. The purpose of the current review is to provide an overview of the pathophysiology of FAPDs and an up-to-date summary of the literature related to FAPDs in children and adolescents, with additional focus on several areas (eg, diet and probiotics) where patients and families frequently have questions or implement self-directed care. We also provide an approach to the assessment and treatment of pediatric FAPDs focusing on the robust literature regarding psychological interventions and much sparser literature regarding medication treatment.

Psychological and Gastrointestinal Symptoms of Patients with Irritable Bowel Syndrome Undergoing a Low-FODMAP Diet: The Role of the Intestinal Barrier

A diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (LFD) improves both gastrointestinal (GI) symptoms and the psychological profile of patients with irritable bowel syndrome with diarrhea (IBS-D). The effects of 12 weeks of LFD on GI symptom and psychological profiles in relation to inflammation and the involvement of the intestinal barrier were studied in twenty IBS-D patients. The IBS Severity Scoring System, the Symptom Checklist-90-Revised, the Italian version of the 36-Item Short-Form Health Survey, the IBS-Quality of Life (QoL) questionnaire, and the Psychophysiological questionnaire were administered. The GI barrier function was assessed by sugar absorption test, the serum and fecal zonulin levels, and the serum levels of intestinal fatty-acid binding protein and diamine oxidase. Interleukins (ILs) and lipopolysaccharide (LPS) serum levels were evaluated along with dysbiosis. At the end of LFD, GI symptoms, psychological state (mainly anxiety, somatization, psychoticism, and interpersonal sensitivity), and QoL significantly improved in these patients. Simultaneously, an improvement in small intestinal permeability and intestinal mucosal integrity occurred, while IL-6, Il-10, LPS, and fermentative dysbiosis significantly decreased. The LFD can modify the immune-inflammatory features and enhance intestinal permeability and mucosal integrity, thus determining a concurrent improvement in the clinical and psychological conditions.

Update on the Role of Allergy in Pediatric Functional Abdominal Pain Disorders: A Clinical Perspective

Both functional abdominal pain disorders (FAPDs) and food allergies are relatively common in children and adolescents, and most studies report an association between FAPDs and allergic conditions. FAPDs share pathophysiologic processes with allergies, including both immune and psychological processes interacting with the microbiome. No conclusive data are implicating IgE-mediated reactions to foods in FAPDs; however, there may be patients who have IgE reactions localized to the gastrointestinal mucosa without systemic symptoms that are not identified by common tests. In FAPDs, the data appears stronger for aeroallergens than for foods. It also remains possible that food antigens initiate an IgG reaction that promotes mast cell activation. If a food allergen is identified, the management involves eliminating the specific food from the diet. In the absence of systemic allergic symptoms or oral allergy syndrome, it appears unlikely that allergic triggers for FAPDs can be reliably identified by standard testing. Medications used to blunt allergic reactions or symptomatically treat allergic reactions may be useful in FAPDs. The purpose of the current manuscript is to review the current literature regarding the role of allergy in FAPDs from a clinical perspective, including how allergy may fit in the current model of FAPDs.

Somatization in patients with predominant diarrhoea irritable bowel syndrome: the role of the intestinal barrier function and integrity

Background

Irritable bowel syndrome (IBS) is characterised by gastrointestinal (GI) and psychological symptoms (e.g., depression, anxiety, and somatization). Depression and anxiety, but not somatization, have already been associated with altered intestinal barrier function, increased LPS, and dysbiosis. The study aimed to investigate the possible link between somatization and intestinal barrier in IBS with diarrhoea (IBS-D) patients.

Methods

Forty-seven IBS-D patients were classified as having low somatization (LS = 19) or high somatization (HS = 28) according to the Symptom Checklist-90-Revised (SCL-90-R), (cut-off score = 63). The IBS Severity Scoring System (IBS-SSS) and the Gastrointestinal Symptom Rating Scale (GSRS) questionnaires were administered to evaluate GI symptoms. The intestinal barrier function was studied by the lactulose/mannitol absorption test, faecal and serum zonulin, serum intestinal fatty-acid binding protein, and diamine oxidase. Inflammation was assessed by assaying serum Interleukins (IL-6, IL-8, IL-10), and tumour necrosis factor-α. Dysbiosis was assessed by the urinary concentrations of indole and skatole and serum lipopolysaccharide (LPS). All data were analysed using a non-parametric test.

Results

The GI symptoms profiles were significantly more severe, both as a single symptom and as clusters of IBS-SSS and GSRS, in HS than LS patients. This finding was associated with impaired small intestinal permeability and increased faecal zonulin levels. Besides, HS patients showed significantly higher IL-8 and lowered IL-10 concentrations than LS patients. Lastly, circulating LPS levels and the urinary concentrations of indole were higher in HS than LS ones, suggesting a more pronounced imbalance of the small intestine in the former patients.

Conclusions

IBS is a multifactorial disorder needing complete clinical, psychological, and biochemical evaluations.

Trial registration: https://clinicaltrials.gov/ct2/show/NCT03423069.

Associations of Abdominal Pain and Psychosocial Distress Measures With Health-Related Quality-of-Life in Pediatric Healthy Controls and Irritable Bowel Syndrome

BACKGROUND

Children with irritable bowel syndrome (IBS) have lower health-related quality-of-life (HRQOL) than healthy controls (HC). Abdominal pain and psychosocial distress are negatively associated with HRQOL, although their relative effect is unclear.

AIM

The aim of this study was to compare the relative associations of abdominal pain and psychosocial distress with HRQOL in HC and IBS.

STUDY

Baseline abdominal pain, psychosocial distress, and HRQOL measures were obtained from HC and IBS pediatric clinical trial participants. Regression assessed which measures were most strongly associated with Physical and Psychosocial HRQOL separately by group. Interaction analyses examined group differences in the associations of abdominal pain and psychosocial distress with HRQOL.

RESULTS

Eight-five HC and 213 children with IBS participated. Somatization was most strongly associated with Physical HRQOL in HC, and functional disability was most strongly related in IBS. With respect to Psychosocial HRQOL, somatization was most strongly associated for both HC and IBS; depression was also significantly associated in HC. The strength of association between somatization and Physical HRQOL differed between groups; the negative association was less pronounced for IBS than HC. The association between functional disability and both Physical and Psychosocial HRQOL differed significantly between groups; the negative associations were more pronounced for IBS than HC.

CONCLUSIONS

Multiple psychosocial distress measures, including somatization, were associated with HRQOL in children with IBS; HRQOL in HC was driven consistently by somatization, to the exclusion of other psychosocial concerns. The associations of somatization and functional disability with HRQOL are distinctly different between HC and IBS. This knowledge supports utilization of psychosocial interventions to improve overall well-being for children with IBS.

Risks of Major Mental Disorders and Irritable Bowel Syndrome among the Offspring of Parents with Irritable Bowel Syndrome: A Nationwide Study

Irritable bowel syndrome (IBS) is a functional bowel disorder that is highly comorbid with mental disorders. However, few studies have examined the risk of attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), bipolar disorder, major depressive disorder (MDD), and schizophrenia in the offspring of parents with IBS. We used nationally representative cross-sectional survey data to analyze cross-generational transmission patterns of both IBS and major mental disorders. Odds ratio (OR) was calculated by using logistic regression models with adjustment for potential confounding factors. Offspring of parents with IBS were more likely to develop IBS themselves (OR = 2.41, 95% confidence interval (CI), 2.09–2.78), ADHD (OR = 1.33, 95% CI, 1.08–1.62), and MDD (OR = 1.32, 95% CI, 1.04–1.68) than the controls. Data stratification by parental sex revealed that paternal IBS increased risk of ADHD (OR = 1.34, 95% CI, 1.01–1.77) in the offspring, while maternal IBS increased the risk of MDD (OR = 1.51, 95% CI, 1.11–2.06). This is the first study to reveal parental IBS is associated with IBS, ADHD, and MDD among offspring, suggesting the necessity for early implementation of prevention strategies for at-risk children.

Paediatric functional abdominal pain disorders

Paediatric functional abdominal pain disorders, currently referred to as disorders of gut-brain interaction, comprise irritable bowel syndrome, functional dyspepsia, abdominal migraine and functional abdominal pain not otherwise specified, as defined by the Rome IV diagnostic criteria. Functional abdominal pain disorders are common disorders with a prevalence of 3-16% depending on country, age and sex. A greater understanding of aetiopathogenesis and pathophysiology is emerging and includes intestinal components (inflammation, motility and the microbiota), central factors (psychological aspects, sensitization and/or differences in connectivity or activity of certain brain regions) as well as extrinsic factors (infections). In particular, the timing of disruption of the microbiota-gut-brain axis seems to be important. Diagnosis is challenging but is primarily based on clinical symptoms and exclusion of other organic causes, with an emphasis on avoiding unnecessary invasive diagnostic procedures. The available pharmacological interventions are limited in children and, therefore, management has focused on combined approaches, including mind-targeted interventions (hypnotherapy and cognitive behavioural therapy), diet (probiotics) and percutaneous electrical nerve field stimulation. The evidence for their clinical efficacy, although limited, is favourable, with positive impacts on symptoms and overall quality of life. The coming decades hold promise for improved understanding and management of these enigmatic disorders.

The relationship between mucosal inflammatory cells, specific symptoms, and psychological functioning in youth with irritable bowel syndrome

Both mucosal inflammation and psychologic dysfunction have been implicated in irritable bowel syndrome (IBS). While some relationships between inflammation (mast cells and eosinophils) and depression have been reported in adults with IBS, relationships between inflammation and psychologic function have not been studied in children and adolescents. The aims of the current study were to: (1) assess densities of colonic mast cells, eosinophils, and TH17 cells in youth with IBS; and, (2) explore relationships between these cells and specific IBS symptoms and psychologic functioning. Utilizing previously obtained biopsies from the descending and rectosigmoid colons, densities were determined for mast cells, eosinophils, and TH17 cells, respectively, in 37 youth with IBS and 10 controls. In IBS patients, densities were assessed in relation to specific IBS symptoms and in relation to self-report anxiety and depression scores. In both the descending and rectosigmoid colons, densities of mast cells, eosinophils, and TH17 cells were higher in IBS patients as compared to controls. In IBS patients, rectosigmoid mast cell density was higher in those reporting pain relief with defecation. Also, in IBS patients, rectosigmoid eosinophilia was associated with higher anxiety scores and eosinophil density correlated with depression scores. In the descending colon, eosinophil and mast cell densities both correlated with depression scores. In conclusion, mucosal inflammation (mast cells and eosinophils) is associated with pain relief with defecation and with anxiety and depression in youth with IBS.

The Prevalence of Hypermobility in Children with Irritable Bowel Syndrome and Functional Abdominal Pain Is Similar to that in Healthy Children

OBJECTIVES

To test the hypothesis that the prevalence of joint hypermobility is greater in children with irritable bowel syndrome and functional abdominal pain than in healthy control children and is related to gastrointestinal symptoms and psychosocial distress (anxiety, depression, and somatization).

STUDY DESIGN

Children (irritable bowel syndrome, n = 109; functional abdominal pain, n = 31; healthy control, n = 69), 7-12 years of age completed prospective 2-week pain and stooling diaries and child- and parent-reported measures of anxiety, depression, and somatization. Joint hypermobility was determined using Beighton criteria (score of ≥4 or 6). We also examined possible relationships between Beighton score, race, body mass index, gastrointestinal symptoms, and psychosocial distress.

RESULTS

Beighton scores were similar between groups, as was the proportion with joint hypermobility. Scores were higher in girls (3.1 ± 2.4) than boys (2.3 ± 1.8; P = .004) and decreased with age (P < .001; r = -0.25). Race and body mass index did not impact joint hypermobility prevalence. Beighton scores were not related to abdominal pain or stooling characteristics. Participants with a score of ≥4 and ≥6 had greater somatization and depression by child report (P = .017 and P = .048, respectively). No association was seen for anxiety. There was no significant association between joint hypermobility and psychosocial distress measures per parent report.

CONCLUSIONS

Contrary to the adult literature, the prevalence of joint hypermobility does not differ among children with irritable bowel syndrome, functional abdominal pain, or healthy control children. The presence or severity of joint hypermobility does not correlate with abdominal pain or stooling characteristics. Somatization and depression by child report appear to have a relationship with joint hypermobility.

The Influence of Caregiver Distress and Child Anxiety in Predicting Child Somatization in Youth with Functional Abdominal Pain Disorders

Pediatric functional abdominal pain disorders (FAPD) are associated with adverse outcomes including increased somatization (e.g., heightened physiological sensations that include gastroenterological and non-gastroenterological symptoms) and increased functional disability. Caregiver distress and child anxiety are separately associated with the adverse outcomes of pediatric FAPD. However, the cumulative role of caregiver (i.e., stress, anxiety, and depression) and child psychological functioning (anxiety) in relation to adverse outcomes associated with FAPD, and particularly somatization, is unclear. Thus, the present investigation sought to examine the role of caregiver distress and child anxiety in relation to pain-related functioning (i.e., somatization, pain intensity, functional disability) in youth with FAPD. Data were gathered as part of a larger study examining a psychological treatment for youth with FAPD. Participants (ages 9–14) with FAPD completed measures of child anxiety, pain, and pain-related functioning. Caregivers completed a measure of caregiver distress (e.g., stress, anxiety, depressive symptoms). Pearson correlations revealed significant positive associations between child anxiety and child functional disability. Additionally, caregiver anxiety, child anxiety, and child somatization were all significantly and positively correlated with one another. Therefore, we assessed whether child anxiety may potentially mediate the relationship between caregiver anxiety and child somatization in this cross-sectional study. The indirect association between caregiver anxiety and child somatization via child anxiety was not significant. Future research including longitudinal designs to further understand the relationship between caregiver anxiety, child anxiety, and child pain-related functioning, would enhance understanding of how these potentially modifiable psychological factors may impact adverse outcomes of FAPD.

A review of psychological treatments for vomiting associated with paediatric functional gastrointestinal disorders

PURPOSE OF REVIEW

Vomiting can be a primary symptom or associated with various other functional gastrointestinal disorders (FGIDs). The purpose of this review was to discuss the evidence for psychological treatments for vomiting in pediatric FGID.

RECENT FINDINGS

Vomiting of functional origin is an increasingly recognized symptom among children and adolescents. It is highly aversive and associated with disability and poor quality of life. Cognitive behavioral therapy, lifestyle modification (especially sleep), diaphragmatic breathing, and hypnosis can be helpful in preventing vomiting episodes and reducing disability. However, no randomized clinical trials have been performed. An evidence base for psychological treatments in children with vomiting of functional origin is highly needed.

SUMMARY

Increased evidence is demonstrating value and efficacy of incorporating psychogastroenterology practices into ongoing treatment plans for digestive conditions. Current psychological treatments are focused on prevention of vomiting through stress reduction and lifestyle modification, reduction of disability by limiting avoidance behaviours, as well as counteracting biological factors. However, psychological treatments have not been shown to be helpful during an acute vomiting episode. More research is needed to build an evidence base for psychological treatments in vomiting disorders.