[Obsessional-type compulsive behavior caused by bilateral circumscribed pallidostriatal necrosis. Encephalopathy caused by a wasp sting].

A previously healthy young man developed encephalopathy after a wasp sting in 1968. Neurological complications included chorea, currently of a minor degree, replaced by buccofacial dyskinesias and compulsive movements. The most disabling consequences were of psychic nature, the patient presenting an unusually marked compulsive activity of an obsessional type.