Glycogen Storage Disease Type V

**Definition:** Glycogenosis due to muscle phosphorylase deficiency. Characterized by painful cramps following sustained exercise.

**Tree numbers:** - C16.320.565.202.449.560 - C18.452.648.202.449.560

**Synonyms:** - Deficiency, Muscle Phosphorylase - Glycogen Storage Disease Type 5 - Glycogen Storage Disease V - Glycogenosis 5 - McArdle Disease - McArdle Type Glycogen Storage Disease - McArdle's Disease - Muscle Glycogen Phosphorylase Deficiency - Muscle Phosphorylase Deficiency - Myophosphorylase deficiency - PYGM Deficiency - Mcardle Syndrome