Total 57 clinical symptoms reported for Glycogen storage disease, type II  Very Frequent (2)Uncommon (4)Occasional (31)Frequent (20)

Muscle weakness	Reduced strength of muscles.   Synonyms:Muscle weakness; Muscular weakness	Very frequent
Progressive proximal muscle weakness	Lack of strength of the proximal muscles that becomes progressively more severe.   Synonyms:Muscle weakness, progressive, proximal	Very frequent