be distinguished as well. Classification Clinical manifestations of glycogen storage disease type III are divided into four classes: GSD IIIa, is the most common, (along with GSD IIIb) and which clinically includes muscle and liver involvement GSD IIIb, which clinically has liver involvement but no muscle involvement GSD IIIc which clinically affects liver and muscle. GSD IV affects liver only (not muscle) Treatment Treatment for glycogen storage disease type III may involve a high-protein diet, in order to facilitate gluconeogenesis. Additionally the individual may need: IV glucose (if oral route is inadvisable) Nutritional specialist Vitamin D (for osteoporosis/secondary complication) Hepatic transplant (if complication occurs) References Further reading External links Autosomal recessive disorders Hepatology Inborn errors of carbohydrate metabolism