The development of myasthenia gravis in a patient with facioscapulohumeral muscular dystrophy: case report and literature review.

The co-existence of facioscapulohumeral muscle dystrophy (FSHD) and myasthenia gravis (MG) is very rare and few cases have been described in the literature. To increase the awareness of the health care providers, we present herein a rare case of MG in a patient with FSHD, discuss the diagnostic challenges, pre- and post-treatment findings and provide a literature review.