Hypnic headache - a rare primary headache disorder with very good response to indomethacin.
: Hypnic headache (HH) is considered as a disorder of the circadian rhythm, mostly affecting the elderly and generally considered a benign disorder, but the pathophysiology of hypnic hedache remains unclear. Various treatments have been suggested for hypnic headache, especially lithium and indomethacin. We report the case of HH fulfilli.....