"Hysteria" is a song by Finnish singer Anna Abreu from her fourth studio album, Rush (2011). Patric Sarin, who had previously worked with Abreu on her former two albums, wrote the song. It was produced by Jukka Immonen, the hitmaker responsible for producing all three of Finnish singer Jenni Vartiainen's albums, including Seili, which was certified 7xPlatinum and went on to become one of the highest-selling albums of all time in Finland. "Hysteria" is a Pop song that continues the Dance infusion Abreu started using during the Now era. It also contains elements of Synthpop. The song was released on 10 January 2011 in Finland, as the album's lead single.