Converse (dissociative) reactions are encountered in medical practice more frequently than they are diagnosed. Some sources estimate that as many as 20 % of financial costs of health institutions are spent on care of patients with functional disorders in the wider sense of the word. Converse disorders with a very varied clinical picture hold an important place in this group. They are defined as neuroses with a subconscious alteration of the sensory or motor system causing somatic dysfunction. The clinical manifestation depends on the intellectual level and medical knowledge of the patient and his ideas on the character of different disorders resp. Although the manifestations can be very vari ed, motor disorders are most frequent. Therefore the neurologist is often the physician who must diagnose and treat the disorder. The submitted paper pays attention to diagnostic criteria O i.e. the presence of positive symptoms suggesting a functional disorder O the diagnosis must not be made per exclusionem, nor if there are any other differential diagnostic doubts. It is particularly important to differentiate malingering somatization disorder, a factitious disorder and hypochondriasis. The authors describe a simple but effective treatment of this difficult disease. It is special electrostimulation therapy —GEFi? (graduated electric faradization) combined with individual psychotherapy.

        Key words: conversion reaction, dissociative disorders, diagnosis, electrotherapy.