Familial Sensitivity to Suxamethonium Due to Atypical Pseudocholinesterase.

A simple apparatus which can deliver a painful electric shock to the subject for aversion therapy is described. It has advantages over nausea-producing drugs, particularly in allowing the patient to treat himself even at home. The use of the apparatus is illustrated by cases of fetishism, obsessional ruminations, smoking, writer's cramp, and alcoholism. Technical details are given of the components and their assembly which requires only the most rudimentary knowledge of electricity.