What is (are) Non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency ?
Non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (NCAH) is a milder and later onset form of a genetic condition known as congenital adrenal hyperplasia. Some people affected by the condition have no associated signs and symptoms while others experience symptoms of androgen (male hormone) excess. Women with NCAH are generally born with normal female genitalia. Later in life, signs and symptoms of the condition can vary but may include hirsutism, frontal baldness, delayed menarche (first period), menstrual irregularities, and infertility. Little has been published about males with NCAH. They may have early beard growth and relatively small testes. Typically, they have normal sperm counts. NCAH is caused by changes (mutations) in the CYP21A2 gene and is inherited in an autosomal recessive manner. Treatment is only necessary in people who are symptomatic and may include a glucocorticoid called dexamethasone.