Sufferers of Body Integrity Identity Disorder (BIID) say they must constantly deal with a large gap between their own physical bodies and how they perceive them. Many choose to undergo surgery to amputate or paralyze their limbs, but oftentimes BIID sufferers are too desperate. Several have taken measures into their own hands and resorted to crushing, sawing, freezing, and even blowing their limbs off with a shotgun!
Researchers believe the condition may be related to other body image disorders such as anorexia, body dysmorphic disorder, and gender identity disorder. All of these illnesses appear merely psychological but may also be related to physical differences in the brain.