Three new cases compatible with hypnic headache syndrome (HHS) are presented. The patients were 70, 77, and 79 years of age (2F, 1M). They described a history of nocturnal headache ranging from 5 months to 7 years. One patient was afflicted with diffuse pain but the other two had unilateral pain. In one patient headache was clearly related with dreams, but in the other two this point could not be confirmed. Except for headache being unilateral in two cases, the remaining HHS criteria were present. It is noteworthy that pain responded to flunarizine in two patients.