A headache is an unpleasant sensation in the head.
Headache may also refer to: Headache (game), a board game Headache (EP), an extended-play music recording by Big Black Headache, a single album by Moon Jong-up Headache, a musical project by the producer Vegyn Headache (journal), a medical journal "Headache" (song), a 1994 song by Frank Black "Headache" (Grimm), a 2015 episode of the television series Grimm