The present invention provides a new use of a compound of formula (I) or a pharmaceutically acceptable salt or solvate salt thereof:for the treatment of a somatoform disorder such as body dysmorphic disorder or hyperchondriasis, bulimia nervosa, anorexia nervosa, binge eating, paraphilia and nonparaphilic sexual addictions, Sydeham's chorea, torticollis, autism, a movement disorder including Tourette's syndrome.