Clinical and electromyographic characteristics of pathological muscular-fatigue syndromes of the myasthenia type.

For many years myasthenia was classed among the rare neurological diseases. At the present time, because of an improvement in diagnosis and, possibly also because this disease has become widespread, the number of cases recorded has appreciably increased and comprises more than 3 per 100,000 population [1, 2]. More than 200 myasthenia patients are under our observation. From 2 to 10 patients come under observation annually.