• O Sjaastad and L S Bakketeig.
• Department of Neurology, St. Olav's Hospital, Trondheim University Hospitals (NTNU), Trondheim, Norway. berit.mjoen@medisin.ntnu.no
• Cephalalgia. 2004 Apr 1; 24 (4): 241-9.

AbstractIn connection with the Vågå study of headache epidemiology, a search was made for caffeine-withdrawal headache in 1741 parishioners. Female to male ratio 1.05; mean age 44.2 years (range 18-65 years). A face-to-face interview technique was used. The mean consumption of coffee was 4.7 cups a day. Males on an average consumed more coffee (5.1 +/- 3.3 cups/day) than females (4.4 +/- 3.1 cups/day). Neither in those with a high consumption of coffee: > or =10 cups a day (n = 134), nor in those with a considerable variation in consumption: > or =10 cups/day (n = 31) did there seem to be a definite increase in headache resembling caffeine-withdrawal headache, for instance during weekends. In seven parishioners, however, there did seem to be such a headache, and in two of them, the evidence was rather convincing. This headache generally seemed to be mild and global and occurred mainly in the morning hours on weekends. There was no nausea, no throbbing quality of the pain, and no reported use of analgesics. Coffee seemed to abate the headache. This frequency (0.4%) should, clearly, be regarded as a minimum figure. Caffeine-withdrawal headache at the grassroots level may be a rather rare, generally vague, symptom-poor headache.

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