Facioscapulohumeral muscular dystrophy presenting as shoulder pain in a baseball player.

Facioscapulohumeral muscular dystrophy is a commonly occurring myopathy that affects the facial and periscapular musculature. We describe a case in a high school throwing athlete that presented as shoulder pain with throwing a baseball. The patient has begun an intensive physical therapy training program that targets his weak scapular stabilizers as well as altering his throwing mechanics. His symptoms have improved, and he is able to continue competing in throwing sports at a high level.