A number of head pains respond primarily ‘or exclusively to the NSAID, indomethacin. One of these headaches, chronic paroxysmal hemicrania, is similar In presentation to cluster headache, although the attacks are short
lived (lasting several minutes) and occur manytimes per day. Unlike clust-er headaches, women are more often affected than men: Again toothache may be the initial presentation. Exertional headaches, as in we-ightlifting or during intercourse, may also produce intense, rapidonset headache’ responsive to indomethacin, Hypnic headache, waking the patient from sleep generally within 2 to 4 hours of sleep onset and lasting 15 minutes to 3 hours, is frequently indomethacin responsive, buthypnic headache is not accompanied by symptoms of parasympathetic overactivity.