Characterization of chronic daily headaches in children in a multidisciplinary headache center

Comparison of continuous headache features in youth with migraine, new daily persistent headache, and persistent post-traumatic headache

OBJECTIVE

To compare clinical features in youth with continuous headache from migraine, persistent post-traumatic headache, and new daily persistent headache to determine if they are similar, contrary to their distinction in the International Classification of Headache Disorders.

METHODS

We pursued a single center age- and sex-matched observational study comparing the clinical characteristics of 150 youth (11 - 17 years old) with continuous headache from migraine, persistent post-traumatic headache, and new daily persistent headache. A diagnostic algorithm based on international classification of headache disorders criteria was used to identify those with migraine (headache features of migraine with gradual onset), and persistent post-traumatic headache and new daily persistent headache (based on the circumstances of headache onset regardless of headache features). Fifty participants each with migraine, persistent post-traumatic headache, and new daily persistent headache were matched by age and sex. Participant survey responses on headache characteristics were compared.

RESULTS

Median usual headache severity was 6.0 [95%CI 6.0, 6.0] and was not different across diagnostic groups (H statistic = 1.2, p = 0.55). Headache exacerbation frequency, disability, associated symptoms, and most triggers were not significantly different across groups. The majority of persistent post-traumatic headache and new daily persistent headache had headache features consistent with a diagnose of migraine (72% and 62%, respectively).

CONCLUSION

Our findings suggest that most persistent post-traumatic headache and new daily persistent headache may represent abrupt onset of migraine.

Headache in the Pediatric Population: Focus on Migraine

Pediatric headache is a common condition with significant impact on quality of life and ability to function in academic, social, and extracurricular activities. Most pediatric patients seen in primary care and neurology clinics with headache have primary headache disorders. Diagnosis is largely based on clinical history. Imaging is rarely needed in the absence of red flag features. Careful diagnosis is important to guide appropriate treatment. Treatment focuses on a biopsychosocial model integrating lifestyle, pharmacologic and nonpharmacologic treatment modalities. As few therapies are approved in the pediatric population, treatments are often used off-label based on evidence extrapolated from adult studies. Outcomes vary over time but are generally favorable when headache disorders are diagnosed promptly and managed in a multidisciplinary setting.

Outcomes That Matter to Adolescents With Continuous Headache Due to Chronic Migraine and Their Parents: A Pilot Survey Study

BACKGROUND

Children and adolescents with chronic migraine who have continuous headache may have high levels of headache-related disability but have largely been excluded from clinical trials. Understanding patient-valued treatment outcomes may facilitate future study design.

OBJECTIVE

To identify patient-valued outcome measures for headache preventive treatments among adolescents with continuous headache due to chronic migraine and their parents.

METHODS

Adolescents with an ICHD-3 diagnosis of chronic migraine, who had continuous headache and who were being cared for at a tertiary pediatric headache clinic, and their parents, were surveyed to query the value of treatment outcomes in the domains of headache frequency, intensity, functional impact, and associated symptoms. Individual outcomes and categories of outcomes were ranked in order of preference using weighted average rank. Results were rounded to the degree of precision with which they were measured.

RESULTS

The survey was completed by 55 adolescents and 60 parents of adolescents with continuous headache due to chronic migraine. Mean age of adolescents was 16 (SD 1, range 12 to 17). Median adolescent-reported duration of continuous headache was 24 months (IQR 12-39) and adolescents had tried a median (IQR) of 2 (0-5) preventive medications, only 13% of which were perceived as helpful. Overall, the most valued individual outcome measure among both adolescents and parents was a decrease in frequency of more severe headaches; however, outcomes reflecting headache intensity were most valued by adolescents while outcomes reflecting functional impact were most valued by parents. Over 60% of adolescents felt that it was more important to measure decrease in frequency and intensity of headaches in terms of severe headaches/spikes rather than total headache days. Among associated symptoms, improvement in "brain fog" was most highly valued by both adolescents and parents.

DISCUSSION

The results of this study provide important information about which preventive treatment outcomes are valued by adolescents with continuous headache due to chronic migraine and their parents. Results suggest that adolescents value a decrease in frequency of severe headaches over a decrease in frequency of headache days overall. Generalizability may be limited as the surveyed population were being cared for at a tertiary pediatric headache clinic and generally had headache disorders that were refractory to treatment. These results may help guide future trial design in this population with continuous headache due to chronic migraine.

TRIAL REGISTRATION

NA.

Clinic-based characterization of continuous headache in children and adolescents: Comparing youth with chronic migraine to those with new daily persistent headache

OBJECTIVE

To describe the headache characteristics and functional disability of a large sample of treatment-seeking youth with continuous headache and compare these factors across diagnostic subgroups of chronic migraine and new daily persistent headache.

METHODS

This retrospective study utilized clinical information (e.g. diagnosis, headache features, medication overuse, functional disability) from a large data repository of patients initially presenting to a multidisciplinary headache center with continuous headache. Patient inclusion in subgroup analyses for chronic migraine and new daily persistent headache was based on clinician diagnosis using International Classification of Headache Disorders (ICHD) criteria.

RESULTS

The current sample included 1170 youth (mean age = 13.95 years, 78.8% female) with continuous headache. The overwhelming majority of these youth had headaches with migrainous features, regardless of their clinical diagnosis. Youth with chronic migraine reported a longer history of continuous headache symptoms and earlier age of headache onset than youth with new daily persistent headache and were more likely to have medication overuse. Most youth with continuous headache experienced severe migraine-related functional disability, regardless of diagnostic subgroup.

CONCLUSIONS

Overall, youth with continuous chronic migraine and new daily persistent headache did not have clinically meaningful differences in headache features and associated disability. Findings suggest that chronic migraine and new daily persistent headache may be variants of the same underlying disease.

Headache Characteristics in Children With Pseudotumor Cerebri Syndrome, Elevated Opening Pressure Without Papilledema, and Normal Opening Pressure: A Retrospective Cohort Study

BACKGROUND

Certain headache characteristics and associated symptoms are commonly attributed to increased intracranial pressure, but they have not been systematically studied among children in the context of revised diagnostic criteria for pseudotumor cerebri syndrome (PTCS).

METHODS

We performed a retrospective cohort study of patients treated for suspected or confirmed PTCS. Charts were reviewed for PTCS and headache diagnostic criteria and associated characteristics. Chi-squared or Fisher's exact tests were used to compare the frequency of headache characteristics between groups.

RESULTS

One hundred and twenty-seven individuals were identified: 61 had definite PTCS, 10 had probable PTCS, 31 had elevated opening pressure (OP) without papilledema, and 25 had normal OP without papilledema. Eleven children had no headache (6 with definite PTCS, 5 with probable PTCS). Headache pattern was episodic in 49% (95% CI: 34-64%) of those with definite PTCS, 18% (95% CI 6-37%) of those with elevated OP without papilledema, and 16% (5-36%) of those with normal OP without papilledema. Headache location was more likely to involve the head along with neck or shoulders in those with definite PTCS compared with elevated OP without papilledema (OR = 7.2, 95% CI: 1.9-27.6) and normal OP (OR = 4.5, 95% CI: 1.3-15.6) groups.

DISCUSSION

While missing data and small cohort size are limitations, this study suggests that headache in PTCS is more likely to involve the head along with neck/shoulders, and that headache in PTCS may be episodic or constant. Headache is occasionally absent in PTCS.

Trajectory of Improvement in Children and Adolescents With Chronic Migraine: Results From the Cognitive-Behavioral Therapy and Amitriptyline Trial

We compared headache frequency trajectories between clinical trial participants who received cognitive-behavioral therapy (CBT) and amitriptyline (CBT+A) or headache education (HE) and amitriptyline (HE+A) to determine if there was a differential time course of treatment response between the groups. One hundred thirty-five patients (age 10-17 years) diagnosed with chronic migraine participated, attending 8 one-hour one-on-one CBT or HE sessions with a trained psychologist for 8 weekly sessions, 2 sessions at weeks 12 and 16, and a post-treatment visit at week 20. Participants kept daily headache diaries and completed take-home assignments between visits. Data from daily headache diaries are presented for each day and according to 28-day periods. Trajectories of improvement indicate initial decrease in headache days began during the first month of treatment, for both groups, and continued to decrease throughout treatment. The CBT+A group had greater daily improvement than the HE+A group. A significantly greater proportion of the CBT+A group had a ≥50% reduction in headache days each month, and a significantly greater proportion of the CBT+A group had ≤4 headache days per month in months 3 through 5. Results indicate the trajectory of decrease in headache days is significantly better for patients receiving CBT+A versus HE+A.

PERSPECTIVE

This article presents daily information about headache frequency over a 20-week clinical trial. Youth with chronic migraine who received CBT+A improved faster than those in the control group. Findings provide clinicians with evidence-based expectations for treatment response over time and ways of monitoring treatment success.

TRIAL REGISTRATION

clinicaltrials.gov identifier NCT00389038.

Outcome and Cost of Inpatient Hospitalization for Intravenous Dihydroergotamine Treatment of Refractory Pediatric Headache

BACKGROUND

To determine the cost and efficacy of admitting patients for intravenous dihydroergotamine treatment and to identify factors associated with a higher likelihood of response to treatment.

METHODS

We performed a retrospective review of all pediatric hospitalizations from 2001 to 2010 for intravenous dihydroergotamine therapy for headache. Data were collected using the REDcap database and consisted of multiple variables, including preadmission demographics, headache duration, use of prophylactic medications, inpatient therapies including dihydroergotamine dosing, procedures, consultations, total hospital cost, and headache severity at discharge and at follow-up.

RESULTS

Seventy-four percent of the 145 individuals who were hospitalized were female. Mean age was 14.9 years. Headache was described as chronic or daily in almost all patients and 28 (19%) had status migrainosus. Sixty-six percent had a first-degree relative with migraine. The average length of stay was 3.7 days, and the average cost was $7569 per hospitalization. Patients received an average of eight doses of dihydroergotamine. At the time of discharge, 63% of patients reported improvement. Follow-up information was available for 68% of the cohort at a median of 42 days after discharge, and 21 of 99 patients (21%) experienced sustained relief of headache. Response to dihydroergotamine was correlated with a lower rate of comorbid diagnoses, lumbar puncture, and outpatient neuroimaging. Response also correlated to less expensive hospitalizations with an average cost of $5379 per hospitalization versus $7105 per hospitalization without positive response. Response was also correlated with a patient receiving more doses of intravenous dihydroergotamine.

CONCLUSIONS

Although intravenous dihydroergotamine is an effective abortive medication for intractable migraine, it may provide only short-term headache relief in many pediatric patients. Hospitalization is relatively costly with only modest long-term benefit, especially in patients with chronic migraine or chronic daily headache.

Chronic Daily Headache in Childhood and Adolescence: Clinical Aspects and a 4-Year Follow-up

Chronic daily headache (CDH) represents a challenge in clinical practice and the scientific field. CDH with onset in children and adolescents represent a matchless opportunity to understand mechanisms involved in adult CDH. The aim of this study was to evaluate the diagnosis, prognosis and psychiatric co-morbidity of CDH with young onset in the young. Fifty-nine CDH patients has been followed from 1997 to 2001 in our department. Headache and psychiatric diagnoses were made on the basis of the international system of classification (International Headache Society, 1988; DSM-IV). X2 test and multinomial logistic regressions were applied to analyse factors predicting outcome. The current diagnostic system allows a diagnosis in 80% of CDH patients, even if age-related characteristics have been evidenced. Psychiatric disorders are notable in CDH (about 64% of patients) and predict (mainly anxiety) a poorer outcome. Surprisingly, analgesic overuse is not involved in the chronicization process. Diagnosis of CDH needs further study. Psychiatric disorders predict a worse outcome and greater account should be taken of them in treatment planning.

Chronic Daily Headaches in Children and Adolescents

The clinical characteristics of chronic daily headache were studied in 40 children and adolescents, as well as the associated factors responsible for maintenance of the continuous headache pattern. The study of the clinical headache characteristics, showed a female preponderance (75%), mean age of 11 years old at the first consultation, and onset of headache symptomatology at a mean age of 8.5 years old. The average time interval for the evolution of sporadic headache into chronic daily headache was 1.4 years, and psychosocial stressors were present, acutely or chronically, during the period of headache-frequency increase in 47% of the children. Headaches were classified as transformed migraine (65%), mixed pattern (17.5%) and chronic tension-type headache (17.5%). Sixty per cent of patients had mothers with migraine. Data regarding common analgesic use showed an average intake of 11.2 days/month.

Pilot Randomized Controlled Trial of Internet-Delivered Cognitive-Behavioral Treatment for Pediatric Headache

OBJECTIVE

To evaluate the feasibility and preliminary effectiveness of an Internet-delivered cognitive-behavioral therapy (CBT) intervention for adolescents with chronic headache.

BACKGROUND

Headache is among the most common pain complaints of childhood. Cognitive-behavioral interventions are efficacious for improving pain among youth with headache. However, many youth do not receive psychological treatment for headache due to poor access, which has led to consideration of alternative delivery modalities such as the Internet.

METHODS

We used a parallel arm randomized controlled trial design to evaluate the feasibility and preliminary effectiveness of an Internet-delivered family-based CBT intervention, Web-based management of adolescent pain. Adolescents were eligible for the trial if they were a new patient being evaluated in a specialized headache clinic, between 11 and 17 years of age, and had recurrent headache for 3 months or more as diagnosed by a pediatric neurologist. Eighty-three youths were enrolled in the trial. An online random number generator was used to randomly assign participants to receive Internet CBT adjunctive to specialized headache treatment (n = 44) or specialized headache treatment alone (n = 39). The primary treatment outcome was headache days.

RESULTS

Youth and parents in the Internet CBT group demonstrated high levels of engagement with the web program and reported satisfaction with the intervention. Multilevel modelling (MLM) was used to conduct hypothesis testing for continuous outcomes. For our primary treatment outcome of headache days, adolescents reported a statistically significant reduction in headache days from baseline to post-treatment and baseline to 3-month follow-up in both treatment conditions (main effect for time F(2, 136) = 19.70, P < .001). However, there was no statistically significant difference between the Internet CBT group and the specialized headache treatment group at post-treatment or follow-up (group × time interaction F(2, 134) = 0.94, P = .395). For our secondary treatment outcomes, findings from MLM showed that adolescents in both groups demonstrated statistically significant improvement headache pain intensity, activity limitations, depressive symptoms, and parent protective behaviors from baseline to post-treatment and these gains were maintained at 3-month follow-up. Adolescent anxiety symptoms and sleep did not change during the study period for either group. There were no statistically significant group differences on any secondary outcomes at post-treatment or follow-up (P > .05 for all outcomes). No adverse events were reported.

CONCLUSION

Although adjunctive Internet CBT did not lead to additional benefit in this population, future research should evaluate whether it is an effective intervention for adolescents with headache who are unable to access specialized headache treatment.

Sleep and Headache

The interaction between sleep and headache or migraine is powerful and an elevated comorbidity between these 2 disorders has been reported in either adults or children. This comobidity is linked to common neurophysiological and neuroanatomical substrates that are genetically based strongly. The first reports on this relationship were related to the prevalence of parasomnias and sleep-disordered breathing in headache but recent research has expanded the comorbidity to several other sleep disorders, such as restless legs syndrome, periodic limb movements during sleep, and narcolepsy. The assessment of children with headache should always include an accurate anamnesis for the presence of sleep problems either in the child or in the relatives; no correct approach for treating children and adolescents is possible without an integrated method of evaluation and management.

Specific headache factors predict sleep disturbances among youth with migraine

BACKGROUND

There is a paucity of pediatric data addressing the complex relationship between primary headaches and sleep disturbances. Our study objective was to explore headache-related factors that predict sleep disturbance and to compare sleep complaints with other forms of headache-related disability among youth with migraines.

METHODS

A prospective cohort study was conducted in patients 10-18 years old with migraine or probable migraine and without daily sleep complaints. The patients completed a 90-day internet-based headache diary. On headache days, patients rated headache intensity, answered Pediatric Migraine Disability Assessment-based questions modified for daily scoring, and reported sleep disturbances that resulted as a direct effect of proximate headaches.

RESULTS

Fifty-two patients generated 4680 diary entries, 984 patients (21%) involved headaches. Headache intensity (P = 0.009) and timing of headache onset (P < 0.001) were predictive of sleep disturbances. Three Pediatric Migraine Disability Assessment-based items were also associated with sleep disturbances: partial school-day absence (P = 0.04), recreational activities prevented (P < 0.001), and decreased functioning during recreational activities (P < 0.001). Sleep disturbances correlated positively and significantly with daily headache disability scores (rpb = 0.35; P < 0.01).

CONCLUSION

We conclude that specific headache factors predict sleep disturbances among youth with primary headaches.

Anxiety, depression and school absenteeism in youth with chronic or episodic headache

Chronic daily headache (CDH) is relatively common among children. Although comorbid conditions have been extensively studied in adults, they have not been assessed in the pediatric CDH population. Accordingly, the authors assessed several conditions known to be associated with CDH in adult patients in children with either CDH or episodic headache. The influence of CDH or episodic headache on the number of school days missed was also assessed.

BACKGROUND:

Chronic daily headache (CDH) in children has been documented in general and clinical populations. Comorbid psychological conditions, risk factors and functional outcomes of CDH in children are not well understood.

OBJECTIVES:

To examine anxiety and depression, associated risk factors and school outcomes in a clinical population of youth with CDH compared with youth with episodic headache (EH).

METHODS:

Data regarding headache characteristics, anxiety, depression and missed school days were collected from 368 consecutive patients eight to 17 years of age, who presented with primary headache at a specialized pediatric headache centre.

RESULTS:

A total of 297 patients (81%) were diagnosed with EH and 71 were diagnosed with CDH. Among those with CDH, 78.9% presented with chronic tension-type headache and 21.1% with chronic migraine (CM). Children with CDH had a higher depression score than the standardized reference population. No difference was observed for anxiety or depression scores between children with CDH and those with EH. However, children with CM were more anxious and more depressed than those with chronic tension-type headache. Youth experiencing migraine with aura were three times as likely to have clinically significant anxiety scores. Headache frequency and history were not associated with psychopathological symptoms. Children with CDH missed school more often and for longer periods of time.

CONCLUSIONS:

These findings document the prevalence of anxiety, depression and school absenteeism in youth with CDH or EH. The present research also extends recent studies examining the impact of aura on psychiatric comorbidity and the debate on CM criteria.

Chronic daily headache in children and adolescents: science and conjecture

SUMMARY Chronic daily headache comprises a group of headache disorders in which headaches occur almost daily or continuously over several months. Although chronic daily headache is one of the most common chronic pain disorders in pediatrics, data on pathophysiological mechanisms and relative efficacy of treatments remain sparse. In this review, we aim to provide contemporary information on classification, epidemiology, etiology and treatment of pediatric chronic daily headache based on extant empirical data when available, or general consensus in the field when not.

Psychiatric comorbidity in pediatric chronic daily headache

OBJECTIVES

The objectives of this study were to assess comorbid psychiatric diagnoses in youth with chronic daily headache (CDH) and to examine relationships between psychiatric status and CDH symptom severity, as well as headache-related disability.

METHODS

Standardized psychiatric interviews (Kiddie Schedule for Affective Disorders and Schizophrenia, KSADS) were conducted with 169 youth ages 10-17 diagnosed with CDH. Participants provided prospective reports of headache frequency with a daily headache diary and completed measures of symptom severity, headache-related disability (PedMIDAS) and quality of life (PedsQL).

RESULTS

Results showed that 29.6% of CDH patients met criteria for at least one current psychiatric diagnosis, and 34.9% met criteria for at least one lifetime psychiatric diagnosis. No significant relationship between psychiatric status and headache frequency, duration, or severity was found. However, children with at least one lifetime psychiatric diagnosis had greater functional disability and poorer quality of life than those without a psychiatric diagnosis.

DISCUSSION

Contrary to research in adults with chronic headaches, most youth with CDH did not appear to be at an elevated risk for comorbid psychiatric diagnosis. However, patients with a comorbid psychiatric diagnosis were found to have higher levels of headache-related disability and poorer quality of life. Implications for treatment are discussed.

Chronic daily headache in the pediatric population

Very limited long-term follow-up data exist for the population of children and adolescents with chronic daily headache (CDH). One abstracted report discusses short-term follow-up on 24 adolescents (peak age 13 years) with CDH; in a 6-month follow-up, more than 50% experienced a reduction of 75% or more in headache frequency, and one third showed an improvement of greater than 90% in headache frequency. A wide variety of preventive agents were used, but amitriptyline and topiramate provided the largest percentage of successful outcomes. With an improving classification scheme, we have the possibility of using multicenter studies to elucidate whether the clinical patterns seen by experienced observers translate into rational differentiation of treatment approaches. If the entities of CDH are, indeed, different, then therapeutic, prophylactic, and behavioral trials could guide us in offering a more evidence-based approach to the treatment of this fascinating, yet sometimes debilitating condition.

Genomic expression patterns in medication overuse headaches

BACKGROUND

Chronic daily headache (CDH) and chronic migraine (CM) are one of the most frequent problems encountered in neurology, are often difficult to treat, and frequently complicated by medication-overuse headache (MOH). Proper recognition of MOH may alter treatment outcome and prevent long term disability.

OBJECTIVE

This study identifies the unique genomic expression pattern MOH that respond to cessation of the overused medication.

METHODS

Baseline occurrence of MOH and typical pattern of response to medication cessation were measured from a large database. Whole blood samples from patients with CM with or without MOH were obtained and their genomic profile was assessed. Affymetrix human U133 plus2 arrays were used to examine the genomic expression patterns prior to treatment and 6-12 weeks later. Headache characterisation and response to treatment based on headache frequency and disability were compared.

RESULTS

Of 1311 patients reporting daily or continuous headaches, 513 (39.1%) reported overusing analgesic medication. At follow-up, 44.5% had a 50% or greater reduction in headache frequency, while 41.6% had no change. Blood genomic expression patterns were obtained on 33 patients with 19 (57.6%) overusing analgesic medication with a unique genomic expression pattern in MOH that responded to cessation of analgesics. Gene ontology of these samples indicated a significant number were involved with brain and immunological tissues, including multiple signalling pathways and apoptosis.

CONCLUSIONS

Blood genomic patterns can accurately identify MOH patients that respond to medication cessation. These results suggest that MOH involves a unique molecular biology pathway that can be identified with a specific biomarker.

Chronic daily headache in children and adolescents

Chronic daily headaches (CDH) in children and adolescents is reviewed. Three major forms of CDH exist: transformed migraine, chronic tension type headache, and new-onset daily persistent headache. Diagnostic criteria, epidemiology, pathophysiology, evaluation, differential diagnosis, and treatment options are discussed.

Management considerations in the treatment of migraine in adolescents

Migraine is common in adolescents. It can significantly reduce quality of life, may contribute to significant school absences, and disrupt social activities. This article will address the clinical presentation, natural history, types, evaluation, diagnosis and prognosis of migraine. Common adolescent lifestyle factors such as stress, irregular mealtimes, and sleep deprivation may exacerbate migraines. Management options are discussed including lifestyle modifications, acute and preventative therapies. Features of chronic daily headache including comorbid conditions, management, and outcome are also addressed.

Headache in children

Headache is an extremely frequent symptom in childhood and adolescence, and a common reason for neurological consultation. The prevalence of primary headaches (about 85% in tertiary centers) ranges from 10% to 20% in schoolchildren, and increases with increasing age. No sex difference is apparent until age 11. Female preponderance begins about age 12; during adolescence the female-to-male ratio is about 2:1. A child is not a "little adult" and many developmental and individual factors affect headaches, pertaining to the clinical expression, diagnosis, and therapy of the primary headache. According to this view, several points have to be clarified, beginning by considering the child as a whole as regards his or her development, taking into account neurobiological and psychological maturational processes, familial, social, and environmental factors, and avoiding an adult-focused approach to the disease. It is necessary to find key points in the etiology, pathogenesis, diagnosis, treatment, and outcome of headache in childhood and adolescence.

New daily persistent headache in children and adults

New daily persistent headache (NDPH) is frequently seen in young patients with chronic daily headache. NDPH begins with a sudden onset, often associated with an infection or other physical stress. This headache syndrome is difficult to treat and may persist for years. This review discusses the epidemiology, comorbid symptoms, evaluation, and treatment of this disorder.

Pediatric chronic daily headache associated with school phobia

BACKGROUND

Children and adolescents with school phobia sometimes complain of severe and persistent headaches that are diagnosed as chronic daily headache (CDH).

METHODS

We investigated 24 children with CDH and school phobia, and 26 children with CDH but without school phobia.

RESULTS

Of 24 children with CDH and school phobia, 4% had chronic migraine (CM), 46% had chronic tension-type headache (CTTH) and 50% had both CTTH and migraine. However, of 26 children with CDH but without school phobia, 61% had CM, 24% had CTTH, 11% had CTTH and migraine, and 4% had new daily-persistent headache. There was a significantly higher rate of CTTH and both CTTH and migraine in children with CDH and school phobia than that in children with CDH but without school phobia (P < 0.0001). All of the 24 children with CDH and school phobia were found to have psychiatric disorders. Of 24 children, 71% were found to have adjustment disorders, 21% were found to have anxiety disorders, and 8% were found to have conversion disorder. Of 26 children with CDH but without school phobia, only 20% were found to have psychiatric disorders. There was a significantly higher rate of psychiatric disorders in children with CDH and school phobia than in children with CDH but without school phobia (P < 0.0001).

CONCLUSIONS

Our study indicated that children with CDH and school phobia had problems in school and/or family and psychiatric disorders. They should be diagnosed and treated attentively not only for headaches but also for their psychosocial problems and psychiatric disorders.

Favorable outcome of early treatment of new onset child and adolescent migraine-implications for disease modification

There is evidence that the prevalence of migraine in children and adolescents may be increasing. Current theories of migraine pathophysiology in adults suggest activation of central cortical and brainstem pathways in conjunction with the peripheral trigeminovascular system, which ultimately results in release of neuropeptides, facilitation of central pain pathways, neurogenic inflammation surrounding peripheral vessels, and vasodilatation. Although several risk factors for frequent episodic, chronic, and refractory migraine have been identified, the causes of migraine progression are not known. Migraine pathophysiology has not been fully evaluated in children. In this review, we will first discuss the evidence that early therapeutic interventions in the child or adolescent new onset migraineur, may halt or limit progression and disability. We will then review the evidence suggesting that many adults with chronic or refractory migraine developed their migraine as children or adolescents and may not have been treated adequately with migraine-specific therapy. Finally, we will show that early, appropriate and optimal treatment of migraine during childhood and adolescence may result in disease modification and prevent progression of this disease.

Study on management of pediatric migraine by general practitioners in northern France

The study explored the awareness of the Haute Autorité de Santé (High Health Authority, HAS) guidelines for migraine management in children among a random sample of 100 general practitioners (GPs) dichotomised in an urban and a rural group. A questionnaire conducted by phone included questions on knowledge of pediatric migraine acute treatment and preventive therapy, referral to a child neurologist as well as GPs awareness of HAS recommendations in general. Although 45% of GPs argued they were prescribing ibuprofen as first-line abortive drug, only 3% were aware of the recommended dose. Only 48% of GPs were agreeing to initiate preventive therapy. Fifty percent of GPs stated that they knew HAS guidelines but only 24% stated that they had read them. The only significant difference between urban and rural GPs concerned the initiation of preventive therapy. Continuing educational programmes on the implementation of pediatric migraine guidelines is strongly needed.

[Management of chronic daily headache in children and adolescents]

Chronic daily headache (CDH) affects 2 to 4% of adolescent females and 0,8 to 2% of adolescent males. CDH is diagnosed when headaches occur more than 4 hours a day, for greater than or equal to 15 headache days per month, over a period of 3 consecutive months, without an underlying pathology. It is manifested by severe intermittent headaches, that are migraine-like, as well as a chronic baseline headache. Silberstein and Lipton divided patients into four diagnostic categories: transformed migraine, chronic tension-type headache, new daily-persistent headache, and hemicrania continua. The second edition of the International Classification of Headache Disorders did not comprise any CDH category as such, but provided criteria for all four types of CDH: chronic migraine, chronic tension-type headache, new daily-persistent headache, and hemicrania continua. Evaluation of CDH needs to include a complete history and physical examination to identify any possibility of the headache representing secondary headaches. Children and adolescents with CDH frequently have sleep disturbance, pain at other sites, dizziness, medication-overuse headache and a psychiatric comorbidity (anxiety and mood disorders). CDH frequently results in school absence. CDH management plan is dictated by CDH subtype, the presence or absence of medication overuse, functional disability and presence of attacks of full-migraine superimposed. Reassuring, explaining, and educating the patient and family, starting prophylactic therapy and limiting aborting medications are the mainstay of treatment. It includes pharmacologic (acute and prophylactic therapy) and nonpharmacologic measures (biobehavioral management, biofeedback-assisted relaxation therapy, and psychologic or psychiatric intervention). Part of the teaching process must incorporate life-style changes, such as regulation of sleep and eating habits, regular exercise, avoidance of identified triggering factors and stress management. Emphasis must be placed on preventive measures rather than on analgesic or abortive strategies. Stressing the reintegration of the patient into school and family activities and assessing prognosis are other issues to address during the first visit. There are limited data evaluating the outcome of CDH in children and adolescents.

Childhood chronic daily headache: a biopsychosocial perspective

The aim of our observational study was to highlight some clinical observations on chronic daily headache (CDH) in children and adolescents. Data on patients < or =18 years aged presenting with CDH to the Pediatric Headache Clinic at the Royal University Hospital, Saskatoon, Canada, were collected prospectively and sequentially from February 2004 to July 2006. Standardized data sheets and definitions were used. Follow-up information on the 70 participants (22 males, 48 females) was current to February 2007. Fifty-four participants (77%) had had recurrent headaches before transformation to CDH. Comorbid chronic migraine and chronic tension-type headache was the most frequent subtype of CDH (37 participants; 53%). Anxiety and mood disorders were diagnosed in 17 and 15 children respectively. Stressors that precipitated or contributed to the maintenance of CDH were judged important in 44 (63%). The possibility of a somatoform disorder was considered in five children, a factitious disorder in one, and malingering in another. We suggest that CDH be viewed from a biopsychosocial rather than a narrow biomedical perspective and the classification improved to enhance clinical utility.

Management of chronic daily headache in children and adolescents

Chronic daily headache (CDH) occurs in 1-2% of children and adolescents. It can evolve from either episodic tension-type headache or episodic migraine, or can appear with no previous headache history. As with other primary headache disorders, treatment is based on the level of disability. There are children and adolescents who cope well, but there are others who are markedly disabled by their chronic headaches. As in adults, children and adolescents with CDH are at risk for medication overuse. CDH is a diagnosis of exclusion, based on a thorough history, normal physical examination, and negative neuroimaging findings. Along with the chronic headaches, children with this condition may have co-morbid sleep problems, autonomic dysfunction, anxiety, and/or depression. Principles of treatment include identifying migrainous components, stopping medication overuse, stressing normalcy, using rational pharmacotherapy, and addressing co-morbid conditions. Successful outcomes often involve identifying an appropriate headache preventative, reintegration into school, and family participation in resetting realistic expectations.

Chronic daily headache in French children and adolescents

To characterize the clinical profile, comorbidity and aggravating factors, and outcomes, a consecutive series of 34 French children and adolescents with chronic daily headache was studied. Of 206 referred over an inclusive interval of 2 years for the evaluation of headaches, 34 merited a diagnosis of chronic daily headache, which was defined as persistent or daily headaches of at least 3 months in duration. The overwhelming majority were female (61.8%), with a mean age at diagnosis of 10.5+/-3.1 years (range, 2.9-14.8 years). According to the Silberstein-Lipton criteria, transformed migraine was the etiology in 61.8%, whereas according to the second edition of the International Classification of Headache Disorders, chronic migraine accounted for 50% of cases. Stressors were recognized in 82%. Analgesic abuse was evident in 52.9%. Of the 29 for whom follow-up information was available, headaches resolved or greatly improved in 93.1%. Children and adolescents with chronic daily headache are thus a small subset of children with headache seen in general ambulatory practice. They tend to be girls in the midteen years experiencing a transformed migraine complicated by analgesic abuse, suggesting potential preventability. Simple measures, which can include reassurance and analgesia education, can be expected to result in improvement and eventual resolution of headache symptoms.

The classification of chronic daily headache in French children and adolescents: a comparison between the second edition of the International Classification of Headache Disorders and Silberstein-Lipton criteria

Few data are available on the applicability of both the criteria proposed by Silberstein and Lipton (S-L) and the International Classification of Headache Disorders-II (ICHD-II) in the classification of children and adolescents with chronic daily headache (CDH). The International Headache Society recently added revised criteria (ICHD-IIR) for chronic migraine to its Appendix. We retrospectively reviewed all charts of 34 children and adolescents (<17 years) with primary CDH presenting to the outpatient clinic of the Universitary Department of Neuropediatrics of Lille between February 2004 and February 2006 and tried to classify their CDH according to both S-L criteria and the recently published ICHD-IIR. Thirty-two children (94%) and 33 children (97%) could respectively be successfully classified into one subtype of CDH according to the S-L classification and the ICHD-IIR. Transformed migraine was the most common diagnosis (61.8%), followed by new daily-persistent headache (20.6%) when the S-L criteria were used. Twenty-three children and adolescents (67.6%) could be classified under one of the migraine categories according to the ICHD-IIR classification. We think that both S-L and ICHD-II classifications, when used with detailed headache histories and diaries, are adequate to classify chronic daily headache in children and adolescents.

The effectiveness of hospitalization in the treatment of paediatric idiopathic headache patients

BACKGROUND

Headache is a disease that has a high social impact in the paediatric as well as in the adult population, often resulting in a significant reduction in the young patient's quality of life, reflected primarily in a greater number of days off school and increasingly frequent recourse to symptomatic drugs. The idea for this study came from the clinical impression that some paediatric headache patients might benefit more from inpatient than outpatient care.

AIM

The aim of our study was to compare the effectiveness of hospitalization to outpatient care of patients with newly diagnosed frequent and disabling headache.

METHODS

A pragmatic randomized open-label trial was conducted at the Child Neurology Clinic of the University of Pavia, Italy. Children and adolescents with a 2- to 6-month moderate-to-severe migraine or tension-type headache history were randomized to hospital admission or outpatient assessment and followed for 6 months. The efficacy of the two therapeutic strategies was measured by counting the number of responders in each arm. Other end points included the mean frequency and duration of attacks, the number of drug prescriptions taken to control pain, and the number of patients and physicians expressing satisfaction with treatment.

RESULTS

The study population included 27 girls and 23 boys aged 8 through 18 years with migraine (23 cases) or tension-type headache (27 cases). Compared to outpatient assessment, hospital admission was correlated to a significant increase in the number of responders: 0 vs. 44% (1 month), 0 vs. 68% (3 months), and 12 vs. 68% (6 months). The mean frequency and duration of attacks were significantly lower in hospitalized patients (p < 0.0001). Hospitalization was correlated with a significant reduction of patients with severe headache (p < 0.005), a reduction of drug use, and a higher number of satisfied patients and physicians (p < 0.05). Logistic regression analysis confirmed the higher responder rate among hospitalized patients after adjusting for age, sex, diagnosis, and headache characteristics or admission.

CONCLUSIONS

We think hospitalization reduces the emotional mechanisms that provoke stress in children and often induce or favour headache attacks. If these mechanisms can be interrupted, the management of disease may become easier and with enduring benefits.

Chronic daily headaches in children

Chronic daily headache (CDH) is increasingly recognized as a problem in pediatrics and tertiary pediatric headache care. It is estimated that up to 4% of the adult population has CDH. Many of these are chronic migraine (CM). The fraction of the pediatric population with CDH appears to be lower, although the prevalence has not been adequately determined. The simplest definition of CDH is more than 15 headache days per month. In the International Classification of Headache Disorders, Second Edition (ICHD-II), several types of CDH have been identified. These criteria have been contrasted with the Silberstein-Lipton criteria, with revisions suggested. The diagnosis of CDH is further complicated and may be initiated by the overuse of analgesic medications (medication overuse headache) and requires the resolution of this issue before a final diagnosis can be established. In children, most CDH appears to have migraine features, although it may not completely meet the ICHD-II criteria for migraine or CM. Evaluation of CDH needs to include a complete history and physical examination to identify any possibility of the secondary headaches or headaches directly attributed to a secondary cause. Treatment and management involve a multidisciplinary approach, including acute therapy for when the headache severity increases (while avoiding medication overuse), preventative therapy to reduce the frequency and impact of the CDH, and biobehavioral therapy to assist with long-term outcome.

Self-reported headache in schoolchildren: parents underestimate their children's headaches

BACKGROUND

Most previous studies of childhood headache have used indirect parental/physician reports to estimate the prevalence of headache in children.

AIM

To use direct information from children and to compare the results with data collected from parents.

STUDY DESIGN/METHODS

A cross-sectional questionnaire was sent to parents of 7-12-y-olds in Oslo, Norway. The questionnaire included retrospective reports by the parents of the presence of headache among their children during the past 6 mo. A panel study was subsequently done with daily diaries completed by the children over 6 wk. This was done at school.

RESULTS

For 2126 children, both diary reports and parental reports were available. We found a 1-mo prevalence of self-reported headache of 57.6%. Parents, particularly fathers, reported lower headache prevalence than the children. The difference between parental reports and those of the children was larger when the child was a girl. There was a clear difference for the youngest children and parental underreporting for children with the most frequent headaches.

CONCLUSION

Since indirect parental reports of child headache underestimated headache frequency compared to direct diary-based self-reports, we suggest more widespread use of diary registration of headaches in studies of child headache.

Headache

The patient who presents with headache can be diagnosed quickly and efficiently once the correct pattern has been identified. Most patients will have migraine, and treatment is based on the severity and disability. If the identified patient has significant disability, a medication that treats comorbidity should be prescribed. Patients who have a serious underlying disorder can be recognized by a thoughtful history and careful examination and can be worked up accordingly. Patients who have an acute new onset headache problem that requires immediate attention can be triaged and treated once their pattern and history are clear. Hopefully, increasing comfort levels with diagnosing headaches will allow the primary care practitioner to treat headache patients more effectively and efficiently.

Do children and adolescents have chronic daily headaches? Yes!

Chronic daily headaches in children and adolescents appear to have been increasing throughout the past few decades. The diagnosis, classification, treatment, and long-term prognosis continue to be poorly understood. Recent epidemiologic studies and updated classifications have been done in this area, but further work is needed to help these children.

Outcome of a Multidisciplinary Approach to Pediatric Migraine at 1, 2, and 5 years

OBJECTIVE

To assess the long-term effectiveness and outcome of multidisciplinary treatment of childhood headaches 1, 2, and 5 years after initial treatment.

BACKGROUND

Headaches are a common problem for children and adolescents and for many patients continue into adulthood. Outcome research for pediatric migraine headaches is limited, thus restricting knowledge of the effectiveness of long-term management and outcome.

METHODS

Headache characteristics were assessed at the initial visit and were reevaluated 1, 2, and 5 years later in independent sub-groups of consecutive patients. These characteristics included headache frequency, severity, average duration, school absences, and overall perceived response to treatment.

RESULTS

At 1 year, 96 patients were evaluated (mean age = 11.0 +/- 3.4, 59% females), 69 patients at 2 years (mean age = 10.6 +/- 3.4, 48% females), and 32 at 5 years (mean age = 10.5 +/- 3.9, 66% females). The headaches were reported as better in 94% at 1 year, 85% at 2 years, and 94% at 5 years. The initial frequency was at 13.4 +/- 10.8 headaches per month, 4.9 +/- 7.0 at 1 year (P < .001), 4.7 +/- 7.6 at 2 years (P < .001), and 4.5 +/- 7.5 at 5 years (P < .001). The severity decreased from 6.8 +/- 1.8 to 5.1 +/- 2.3 at 1 year (P < .001), to 5.0 +/- 2.4 at 2 years (P < .001), and to 4.6 +/- 2.5 at 5 years (P < .01). The school days missed per month showed a marked decrease from 4.5 +/- 9.5 at initial visit to 1.55 +/- 2.8 at 5 years (P < .001). Patients that were only seen at their initial visit and did not choose to return for follow-up had less frequent and shorter duration headaches on initial visit when compared with the rest of the sample and continued to be doing well at the 1-, 2-, and 5-year assessments.

CONCLUSIONS

Multidisciplinary treatment was found to be effective for children and adolescents with improvement of multiple outcome variants of pediatric migraine care, including frequency, severity, and school days missed. Patients who did not return to follow-up evaluation were more likely to have less frequent and shorter duration headaches at initial presentation. Regular follow-up care is needed for those children with more severe initial headache presentation.

Chronic daily headache in children and adolescents

OBJECTIVE

To describe the clinical features of children with chronic daily headache (CDH) and examine the usefulness of the International Classification of Headache Disorders-II.

BACKGROUND

Few data are available on chronic daily headache and analgesic overuse in children and adolescents and there are no specific criteria for headache in children.

METHODS

We retrospectively reviewed all charts of 79 children and adolescents (<16 years) with headache on > or =15 days/month presenting to the outpatient clinic of the Department of Neurology of the Leiden University Medical Center between 1994 and 2001. We classified their headaches according to the International Classification of Headache Disorders-II.

RESULTS

Fifty-seven (72%) children had chronic daily headache for more than 6 months, with a duration of more than 4 hours a day in 60% of them. Quality, severity, and location of pain varied. Sixty patients (76%) used analgesics, 10 patients more than one type. Thirteen patients (16%) used analgesics daily. In one-third of patients, headache led to frequent school absenteeism and sleeping problems. Twenty-eight (35%) patients could be classified, 17 patients (22%) as chronic tension-type headache, 5 patients (6%) as chronic migraine, and 6 patients (8%) as probable medication overuse headache. Fifteen patients (19%) did not fit into any category and 36 (46%) could not be classified due to insufficient data.

CONCLUSIONS

Chronic daily headache in children is a serious disorder. A relatively large number of patients overuse medication and it leads to frequent school absenteeism and sleeping problems. It remains difficult to classify their headaches with the new criteria for headache disorders.

Cefaleas agudas recurrentes: características clínicas y epidemiológicas

OBJECTIVE

To analyze the epidemiological and clinical characteristics of migraine and tension-type headache in the pediatric age group with the aim of facilitating their differential diagnosis in clinical practice.

PATIENTS AND METHODS

Information on epidemiological and clinical characteristics, physical examination and complementary examinations, if performed, was collected from the medical records of 225 children with acute recurrent headache. The criteria defined by the International Headache Society (IHS) were used in the diagnosis.

RESULTS

A total of 98.2 % of the patients had primary headache: migraine (48.9 %), tension-type headache (48.4 %) and mixed (0.9 %). Thirty percent of those with migraine had migraine with aura. The mean age at onset was 8.6 6 2.9 years in migraine and 9.7 6 2.5 years in tension-type headache (p < 0.05), with no differences between sexes. Children with tension-type headache showed a greater prevalence (p < 0.05) of female sex, urban origin and excellent academic performance. Children with migraine had a greater prevalence (p < 0.05) of positive family history. Migraine headaches were unilateral (44.1 %) or bilateral (55.9 %), pulsating (77.1 %), aggravated by physical activity (68.8 %), caused lost days at school (65.3 %) and were usually accompanied by vomiting (71 %) and photophobia/sonophobia (67 %). Tension-type headaches were bilateral (81.8 %) and oppressive (85.3 %), were less frequently aggravated by physical activity (11.8 %) or interrupted activities (11.8 %) and were occasionally accompanied by vomiting (7.3 %) and photophobia/sonophobia (21.8 %). Electroencephalogram and brain computed tomography scan were performed in 21 % and 39.1 % of the patients, respectively, without changing their diagnosis.

CONCLUSIONS

Migraine and tension-type headaches are a common cause of recurrent headache in the pediatric age group. Onset usually occurs in school-aged children. The IHS criteria for the differential diagnosis of headache in children are useful, although follow-up is the gold standard to validate diagnostic criteria.

Chronic daily headaches in pediatric neurology practice

Using a comprehensive computerized database for a single general pediatric neurology ambulatory practice, the clinical profile, together with the precipitating features and outcomes, in a consecutive series of children with chronic daily headache was ascertained. Chronic daily headache was defined as persistent or daily headaches of at least 3 months' duration. Children with persistent headaches owing to a serious medical condition were specifically excluded from analysis. Of 1669 children (24% of total seen) referred over an 11-year inclusive interval for the evaluation of headaches, 50 (3%) merited a diagnosis of chronic daily headache. The overwhelming majority were female (45/50; 90%), with a mean age at diagnosis of 12.9 years (range 7-16 years). Transformed migraine was determined to be the etiology in the majority (35/50; 70%), with a minority attributable either to postconcussion syndrome (7/50; 14%) or new daily persistent headaches (6/50; 12%). Analgesic abuse was evident in a majority (26/50; 52%). Treatment consisted predominantly of migraine and analgesic education, with a majority of children (42/50; 84%) also receiving daily prophylaxis. Four fifths (41/50; 82%) returned for at least one follow-up. Of these, 56% (23/41) were improved, 32% (13/41) unchanged, and 12% (5/41) worse. Eventually, almost half (20/41) experienced complete resolution of their headache symptoms, with a mean time to resolution of 8 months (range 2-48 months). Children with chronic daily headache are thus a small subset of children with headache seen in general ambulatory practice. They tend to be females in the midteen years experiencing a transformed migraine complicated by analgesic abuse, suggesting potential preventability. Simple measures, which can include the use of prophylactic agents, can be expected to result in improvement and eventual resolution of headache symptoms.