title: Hypnic headaches.
authors.forename: L C
authors.initials: LC
authors.lastname: Newman
authors.forename: R B
authors.initials: RB
authors.lastname: Lipton
authors.forename: S
authors.initials: S
authors.lastname: Solomon
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006261:Headache / Q000188:drug therapy / Q000503:physiopathology*; D006801:Humans; D008094:Lithium / Q000627:therapeutic use; D008297:Male; D012895:Sleep, REM / Q000502:physiology*
chemical_list: D008094:Lithium