classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency, salt wasting form (MONDO_0017839) is the salt wasting form of classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (classical 21 OHD CAH) is characterized by virilization of the external genitalia in females, hypocortisolism, precocious pseudopuberty and renal salt loss due to aldosterone deficiency. Also known as: classic 21-OHD CAH, salt wasting form.