Recognizing and diagnosing abdominal migraines.

Abdominal migraine affects 1% to 4% of children and is a variant of migraine headaches. Onset is seen most often between the ages of 7 to 12 years, with girls affected more often than boys. Presenting symptoms include acute incapacitating non-colicky periumbilical abdominal pain that lasts for 1 or more hours.