A Case of Hypnic Headache Responded to Indomethacin

Abstract

Hypnic headache (HH) is a primary headache disorder occurring exclusively during sleep in the elderly. Although pathophysiology of HH is still unknown, the association with chronobiological perspective and rapid eye movement sleep has been suggested. Lithium has been reported to be the most effective drug for HH. However, its usage may be limited because of its toxicity. Indomethacin could be alternative treatment option, which has better safety profile. We report a case of HH, which was successfully treated with indomethacin.