Glycogen storage disease

Glycogen storage disease is any one of several metabolic disorders[?] that result from enzyme defects that affect the processing of glycogen within muscles and other cell types.

There are eight diseases that are commonly considered to be glycogen storage diseases:

• GSD type I: von Guerke's disease[?]
• GSD type II: acid maltase deficiency[?]
• GSD type III: debrancher deficiency[?]
• GSD type IV: Andersen disease[?]
• GSD type V: McArdle disease
• GSD type VI: liver phosphorylase deficiency[?]
• GSD type VII: muscle phosphofructokinase deficiency[?]
• GSD type IX: phosphorylase kinase deficiency[?]