[Male genital self mutilation--a cause of hematuria]

Pathological self-mutilation is defined as a deliberate destruction of body tissue without conscious intent. It is sometimes associated with several pathologies such as mental disorders and mental retardation. We report a non-psychotic male, with borderline mental retardation who practiced sporadic moderate genital self-mutilations as a masturbation technique and presented as a case of recurrent gross hematuria.