[Intermittent myasthenic syndrome: combination of myasthenia gravis and myasthenic syndrome of the Lambert-Eaton type].

Prolonged follow-up of over 5,000 patients with myasthenia and 40 patients with Lambert-Eaton myasthenic syndrome revealed 7 patients who demonstrated, at different diseases phases, either myasthenia or Lambert-Eaton type myasthenic syndrome. However, according to the totality of all the signs, the given patients' group could be attributed neither to myasthenia nor to the myasthenic syndrome. In view of this fact and on the basis of the reported data the authors draw a conclusion about the existence of a separate synaptic disease.