[Difficulties in the diagnosis of myasthenia gravis]

The article analyses some specificities in the diagnosis of myasthenia (M) and the clinical characteristics of its course in a series of 62 patients with various forms of the disease. At first presentation M has been diagnosed in 9.7% of the cases. The clinical criteria of the differential diagnosis of M and other diseases are also presented. The role of physical, pharmacological, immunological, and electrophysiological tests at early stages of the disease is assessed.