Childhood myasthenia gravis.

A boy aged five and a girl aged one year suffering from myasthenia gravis are described. Both cases had respiratory complications and were treated erroneously until their ptosis was noticed and the diagnosis of myasthenia gravis confirmed. The etiology, types, symptomatology, and treatment of the diseases are described. Attention of the pediatric ophthalmologists is called to the fact that they should consider myasthenia gravis in the differential diagnosis of ptosis and external ophthalmoplegia.