The overall frequency of glycogen-storage disease is approximately 1 case per 20,000–25,000 people.<unk>  is a rare form, representing less than 1% of all cases. The identification of asymptomatic and oligosymptomatic siblings in several<unk>  families has suggested that<unk>  is underdiagnosed. Mortality/Morbidity The major morbidity is a risk of fasting hypoglycemia, which can vary in severity and frequency. Major long-term concerns include growth delay, osteopenia, and neurologic damage resulting in developmental delay, intellectual deficits, and personality changes. Sex No sexual predilection is observed because the deficiency of glycogen synthetase activity is inherited as an autosomal recessive trait. Age<unk>  is most commonly diagnosed during infancy and early childhood.
Glycogen storage disease type 0
Glycogen storage disease type III
Glycogen storage disease type I
Glycogen storage disease type II
Glycogen storage disease type IV
Glycogen storage disease type V
Glycogen storage disease type VI
Glycogen storage disease type IX