Hypnic headache syndrome is a benign, recurrent, late-onset headache disorder that occurs
exclusively during sleep. It affects elderly men and women with a mean age of presentation
of 60 years. Pathogenesis is poorly understood and a secondary cause can often be found in
this age group. In this article, Drs Bhaskar Mukherjee and Francis Vaz discuss the differential
diagnosis and management of hypnic headache in the elderly.