body integrity identity disorder

Body Integrity Identity Disorder (BIID) is a rare psychological condition where an individual feels a persistent desire to amputate or disable a healthy limb or part of their body, believing that this modification would align their physical appearance with their ideal sense of self. People with BIID are usually aware that their desire is unusual and often experience distress or discomfort because their body doesn't match their mental image. The exact cause is unknown, but it is thought to involve neurological and psychological factors. BIID is distinct from body dysmorphic disorder and typically requires specialized mental health care.