"Hemicrania continua": a third Norwegian case.

Another case of hemicrania continua is described--that of a 54-year-old woman, who for the past 3 years has had continuous, left-sided headache. Before this period she had non-continuous headache, otherwise resembling the present one, for 3-4 years. In the chronic stage, the headache fluctuates considerably. Indomethacin in a dosage of 150 mg/day abolishes the headache completely. In hemicrania continua, there may thus, as in chronic paroxysmal hemicrania, be a non-chronic stage, antedating the chronic one. The relative importance of the two stages cannot be assessed at present.