Total 26 clinical symptoms reported for Glycogen storage disease, type IV  Very Frequent (5)Occasional (16)Frequent (5)

Abnormal muscle glycogen content	Any anomaly in the amount of glycogen in muscle tissue.	Very frequent
Abnormal neuron branching	Abnormality of the structure and branching of the dendrites of a neuron.   Synonyms:Aberrant neuronal branching; Abnormal neuronal branching	Very frequent
Decreased liver function	Reduced ability of the liver to perform its functions.   Synonyms:Decreased liver function; Liver dysfunction	Very frequent
Generalized abnormality of skin	An abnormality of the skin that is not localized to any one particular region.   Synonyms:Generalised abnormality of skin; Generalized abnormality of skin	Very frequent
Hepatomegaly	Abnormally increased size of the liver.   Synonyms:Enlarged liver	Very frequent