"Hysteria" is a song by English rock band Def Leppard. It is the tenth track on their 1987 album of the same name and was released as the album's fourth single in November 1987. The song peaked at number ten on the Billboard Hot 100.
On VH1 Storytellers: Def Leppard, lead singer Joe Elliott revealed that the song title came from drummer Rick Allen. The song features a clean guitar melody and heavily multi-tracked vocals in its chorus. The "extreme" nature of producer Mutt Lange's recording methods is also exampled in the pre-chorus, where the clean guitar chords were recorded one note at a time as opposed to the traditional method of strumming them, in effect "building" a chord by recording the notes that make them up.