[Nosographic approach of heriditary myopathies. Attempt at classification and diagnosis by means of erythrocyte cholinesterase and serum pseudocholinesterase analysis].

An original biological study involving assessment of red cell cholinesterase and serum pseudo-cholinesterase activity has given the authors a new approach to the classification of progressive muscular dystrophy: as a result, it has become possible to isolate Duchenne dystrophy and the carries of this disease and to distinguish them from cases of Becker's disease. Also, Leyden-Möbius dystrophy appears to deserve the name as it differs from limb-girdle dystrophy. Finally, there is a case to be made for classifying separately, because of its special biological characteristics, Steinert's myotonic dystrophy.