Body integrity identity disorder (BIID, also referred to as amputee identity disorder[1]) is a psychological disorder wherein sufferers feel they would be happier living as an amputee. It is related to xenomelia, "the oppressive feeling that one or more limbs of one's body do not belong to one's self".[2]
BIID is typically accompanied by the desire to amputate one or more healthy limbs to achieve that end. BIID can be associated with apotemnophilia, sexual arousal based on the image of one's self as an amputee. The cause of BIID is unknown. One theory states that the cause of BIID is a neurological failing of the brain's inner body mapping function (located in the right parietal lobe). According to this theory, the brain mapping does not incorporate the affected limb in its understanding of the body's physical form.[citation needed]
