<prompt> 2 weeks old baby having scrotal pigmentation along with hyponatremia, gypoglycemia and hyperkalemia enzyme deficient-11 beta hydroxylase21 a- hydroxylase3- Beta hydroxylase dehydrogenase17- hydroxylase deficiency  <response>: Ans. is b i.e., 21 a- hydroxylase Congenital adrenal hyperplasia CAHo Autosomal recessive disorder,o MC. is a-hvdroxylase deficiency.In 21a-hyroxylese deficiencyo There is deficiency of mineralocorticoids glucocorticoid,o This leads to hypoglycemia, hyponatremia. 