Circumstances of onset of chronic headache in patients attending a specialty practice.


In a data base of 1013 patients with chronic headache, 44.1% reported the onset of headaches before the age of 20 (preadult-onset headache) and 55.9% at or after that age (adult-onset headache). Circumstances of headache onset were mentioned significantly more frequently in the latter than in the former group (8.5% versus 38.2%, P < .001). The 10 most… (More)


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