According to most studies, the global incidence of classic forms range from about 1:14,000 to 1:18,000 births, based on newborn screening programs and national case registries, but this situation is more common in small genetically isolated populations with small gene pools. The incidence of nonclassical forms is 1:200 to 1:1000 based on various estimates, and is also higher in groups people with a high rate of marriage between relatives, up to 1:50.
Congenital adrenal hyperplasia due to 21-hydroxylase deficiency
Congenital adrenal hyperplasia due to 17α-hydroxylase deficiency
Congenital adrenal hyperplasia due to 11β-hydroxylase deficiency
Congenital adrenal hyperplasia due to 3β-hydroxysteroid dehydrogenase deficiency
Primary pigmented nodular adrenocortical disease
Lipoid congenital adrenal hyperplasia
Cortisone reductase deficiency
Pituitary ACTH hypersecretion