Cluster headache.
Cluster headache is a relatively common form of vascular headache. Its characteristic clinical pattern should allow definitive diagnosis in the vast majority of cases. Extensive diagnostic evaluations are not indicated. Treatment is generally unsatisfactory but helpful in a number of cases. It has a limited natural history and is essentially a benign condition.
D006261:Headache / Q000175:diagnosis; D006801:Humans; D014653:Vascular Headaches / Q000175:diagnosis / Q000628:therapy