Headaches in children younger than 7 years: are they really benign?

Stratification of risk for emergent intracranial abnormalities in children with headaches: a Pediatric Emergency Care Applied Research Network (PECARN) study protocol

INTRODUCTION

Headache is a common chief complaint of children presenting to emergency departments (EDs). Approximately 0.5%-1% will have emergent intracranial abnormalities (EIAs) such as brain tumours or strokes. However, more than one-third undergo emergent neuroimaging in the ED, resulting in a large number of children unnecessarily exposed to radiation. The overuse of neuroimaging in children with headaches in the ED is driven by clinician concern for life-threatening EIAs and lack of clarity regarding which clinical characteristics accurately identify children with EIAs. The study objective is to derive and internally validate a stratification model that accurately identifies the risk of EIA in children with headaches based on clinically sensible and reliable variables.

METHODS AND ANALYSIS

Prospective cohort study of 28 000 children with headaches presenting to any of 18 EDs in the Pediatric Emergency Care Applied Research Network (PECARN). We include children aged 2-17 years with a chief complaint of headache. We exclude children with a clear non-intracranial alternative diagnosis, fever, neuroimaging within previous year, neurological or developmental condition such that patient history or physical examination may be unreliable, Glasgow Coma Scale score<14, intoxication, known pregnancy, history of intracranial surgery, known structural abnormality of the brain, pre-existing condition predisposing to an intracranial abnormality or intracranial hypertension, head injury within 14 days or not speaking English or Spanish. Clinicians complete a standardised history and physical examination of all eligible patients. Primary outcome is the presence of an EIA as determined by neuroimaging or clinical follow-up. We will use binary recursive partitioning and multiple regression analyses to create and internally validate the risk stratification model.

ETHICS AND DISSEMINATION

Ethics approval was obtained for all participating sites from the University of Utah single Institutional Review Board. A waiver of informed consent was granted for collection of ED data. Verbal consent is obtained for follow-up contact. Results will be disseminated through international conferences, peer-reviewed publications, and open-access materials.

Headache in children: young age at onset does not imply a harmful etiology or predict a harsh headache disability

The purpose of this retrospective study was to compare headache etiology, type, and burden and the learning and behavioral profile in children with early-onset (under 6 years) and late-onset (8-12 years) headaches. The study included 133 patients, 35 in the early-onset group and 98 in the late-onset group. Headache diagnosis was based on International Classification of Headache Disorders -II (ICHD-II) criteria. Learning profile and behavioral problems were assessed by parental reports. Tension headache was the most common diagnosis in the early-onset headache group (51.4%). No significant differences were found between the age groups with regard to headache etiology, disability, abnormal neuroimaging results, school performance, or attention problems. Nevertheless, the early-onset group patients had a significantly higher prevalence of behavioral problems: 25.7% versus 11.2% (P < .02). The authors suggest that early age of headache onset does not imply a harmful etiology or a relentless headache disability or burden.

Migraine and tension headache in children under 6 years of age

OBJECTIVE

To investigate the clinical features of idiopathic headache with early onset, whose presence is probably underestimated by parents and physicians and the influence of environmental and psychological factors on headache in children.

METHODS

We report on a prospective longitudinal evaluation of 35 consecutive children referred to the Neuropsychiatry Departments of the Universities of Varese and Pavia (mean age at the first observation: 4 years and 7 months, range: 12 months-6 years; mean age at onset: 4 years and 2 months, range: 10 months-6 years) presenting with headache symptomatology. Mean duration of clinical follow-up: 9.5 months. The diagnosis based on the IHS criteria was then compared to the intuitive clinical diagnosis made in accordance with alternative case definitions. We examined our patients for the presence of early developmental disorders and interictal somatic disorders. We also studied the role of psychosocial factors at the onset and in the course of headache.

RESULTS

DIAGNOSIS

migraine without aura in two cases, episodic tension headache in four cases, migrainous disorders not fulfilling above criteria in eight cases, headache of the tension-type not fulfilling above criteria in 12 cases and headache not classifiable in nine cases. Clinical features of headache are described in the text. Early developmental disorders (0-2 years), such as eating difficulties and sleep disorders, were detected in 18/35 children. Among patients older than 2 years, we also detected interictal somatic disorders (20 cases) such as sleep disorders, eating difficulties, enuresis and idiopathic vomiting. In 14/35 subjects, we identified psychosocial components playing a significant role at the onset of, and during, the headache.

CONCLUSIONS

A better clinical definition of the disorder would make it easier to identify very young affected children and consequently to plan more specific therapeutic interventions, taking into account environmental and psychological factors. A diagnosis of idiopathic headache becomes particularly significant: according to our cases, despite their being limited in number, migraine and tension headache can be considered also as indices of individual or family related problems requiring appropriate psychiatric or psychological intervention. This stresses the need for a multidisciplinary team of specialists that would include a psychologist/ psychiatrist or headache specialist with specific training in psychiatry.