Repetitive excoriation (Q90306)

A compulsive skin-damaging disorder characterised by repetitive gouging through the full thickness of the epidermis of normal skin for relief of tension. It may be regarded as a severe form of skin picking disorder. The injuries inflicted result in exudation, crusting and scarring. It is commonly seen on the upper back, shoulders and upper arms. A similar clinical picture may be seen as a result of severe generalised pruritus secondary to systemic disorders such as primary biliary cirrhosis.