Definition and epidemiology
Abdominal migraine is a functional gastrointestinal disorder (disorder of gut–brain interaction) characterised by recurrent, stereotyped, paroxysmal episodes of intense midline abdominal pain, separated by symptom-free intervals of weeks to months. It is considered part of the spectrum of “episodic syndromes that may be associated with migraine” and is strongly linked to a personal or family history of migraine headache. It typically presents in school-aged children (peak around 4–10 years), with a slight female predominance, and many affected children go on to develop classic migraine in adolescence or adulthood. Prevalence estimates in children range from roughly 1–4%, and it is under-recognised in routine practice.
Clinical features
The defining feature is paroxysmal, incapacitating periumbilical, midline, or diffuse abdominal pain that is acute in onset, lasts at least an hour (often longer), and is severe enough to interrupt normal activities. Crucially, episodes are stereotyped in each child and accompanied by autonomic and migrainous features: pallor (often the parent’s most striking observation), anorexia, nausea, vomiting, photophobia, and headache. Between attacks the child returns to completely normal health, grows well, and examines normally. Triggers may mirror migraine — stress, fatigue, fasting, travel, and certain foods.
Diagnosis
Diagnosis is clinical, using the Rome IV criteria, met when ALL of the following occur at least twice, with criteria fulfilled for at least 6 months before diagnosis: paroxysmal episodes of intense periumbilical, midline, or diffuse pain lasting ≥1 hour (the most severe and distressing symptom); episodes separated by weeks to months; pain that is incapacitating and interferes with normal activities; a stereotyped pattern in the individual child; pain associated with ≥2 of: anorexia, nausea, vomiting, headache, photophobia, pallor; and, after appropriate evaluation, symptoms not fully explained by another condition. The diagnosis is positive and clinical — extensive testing is unnecessary in the typical presentation without alarm features.
See the full criteria: Abdominal Migraine
Red flags
The following should prompt investigation rather than a functional label:
- Pain that is not periumbilical/midline, or is persistent rather than truly episodic with well intervals.
- Weight loss, growth failure, or pubertal delay.
- Gastrointestinal bleeding, persistent vomiting (especially bilious), nocturnal symptoms waking the child.
- Fever, arthritis, rashes, mouth ulcers, or other systemic features.
- Abnormal examination — organomegaly, localised RLQ tenderness, perianal disease.
- Family history of inflammatory bowel disease or coeliac disease.
These warrant targeted workup (CBC, ESR/CRP, coeliac serology, urinalysis, stool studies, and imaging as indicated).
Management overview
Reassurance, a positive explanation of the diagnosis, and validating the reality of the pain are foundational — this is not “pain in the head” but a genuine gut–brain disorder. Identify and reduce triggers (sleep, stress, regular meals, hydration; consider a food/symptom diary). For acute attacks, supportive care and rest in a quiet darkened room help. Prophylaxis is reserved for frequent or disabling episodes and follows migraine principles — agents such as pizotifen, propranolol, cyproheptadine, or flunarizine have the most supporting evidence in children; flunarizine and pizotifen are best studied. Address comorbid anxiety and consider cognitive-behavioural strategies. Most children improve over time, though many transition to typical migraine, so longitudinal follow-up and family counselling are worthwhile.
References
- Hyams JS, et al. Rome IV — Child/Adolescent FGIDs. Gastroenterology. 2016;150(6):1456-1468.
- Angus-Leppan H, et al. Abdominal migraine. BMJ. 2018;360:k179.
- Nelson Textbook of Pediatrics, 21st ed.
Decision support for qualified clinicians only — verify against current primary guidelines and your clinical judgement.