Formed in 1991, Deranged is a very peculiar band in the Swedish scene: unlike bands such as Grave, Entombed and Dismember, Deranged not have the Swedish sound and plays a very fast and technical deathgrind with several groove influences. Draw inspirations from Cannibal Corpse, Carcass, Morbid Angel, Suffocation and Napalm Death, the band is better associated with U.S death metal.

The band have released the singles The Confessions of a Necrophile -title directly extracted of the movie- (1992) and Upon the Medical Slab (1994), the EP's The Confessions Continue (1993), Architects of Perversions (1994) and Sculpture of the Dead (1996) and the albums Rated X (1995), High on Blood (1998), III (2000), Deranged (2001), Plainfield Cemetery (2002), Obscenities in B-Flat (2006), The Redlight Murder Case (2008) and Cut, Carve, Rip, Serve (2011). Also, in 2001 the band did a split with Abscess

Throughout the years, the band suffered several drastic changes in the line-up and in November 2007, the original members was Rikard Wermén (drums) and Axel Johansson (guitar). In March 2008, Wermén left the band, which disbanded in July after several problems between Axelsson and Martin Schönherr. The band was resurrected in the autumn of the same year, with Wermén and Schönherr with their original duties, but with Thomas Ahlgren (former in the bass) in the guitar because Axelsson not was there, and with Andreas Johansson in the bass. After some festival gigs across Europe and a short Russian tour, the band returned to Berno Studio in February 2011, to record the "come-back" album Cut Carve Rip Serve, which was released via the U.S label Sevared Records.

In August 2011, Schönherr left the band, leaving Ahlgren to handle the vocals for a second Russian tour and the Rock In Solo festival in Indonesia. The following year, the band played in their first national show after 2007; also, the band announced the arrival of a new vocalist, Anders Johansson (ex- Vomitous).
In the year 2020 they coming back with the new full lenght album "Deeds Of Ruthless Violence".