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External Genitalia Defects of Congenital Adrenal Hyperplasia are caused by overproduction of androgens in females. In mild cases of CAH, the clitoris is enlarged but the labia major remain unfused. In more severe cases the enlarged clitoris is comorbid with medially fused labia majora. Severe CAH external genitalia can be clinically mistaken for micropenis if chromosomal sex is not tested.
