a genetic condition linked to a recessive gene on an X chromosome. Typical symptoms include- the tendency of compulsions to self-mutilate. Self-mutilation can take many forms from simple and comparatively non-intrusive biting oneself to acts drawing blood. This is typically associated with patients with mental disorders.

LESCH-NYHAN SYNDROME: "Genetic conditions (which can be sex linked) such as the Lesch-Nyhan syndrome result in a tendency to self-mutilate ones own body."