Pediatrics General fa833453 Which of the following statements about 21 alpha-hydroxylase deficiency is false – A Most common cause of congenital adrenal hyperplasia in children B Affected females present with ambiguous genitalia C Affected males present with precocious puberty D Hypokalemic alkalosis is seen High-Yield Explanation In congenital adrenal hyperplasia due to 21 alpha-hydroxylase deficiency, there is hyperkalemia (not hypokalemia).