Newborn 7 days old with vomiting and dehydration clinical examination was normal except for by hyperpigmentation of nipple. Electrolytes Na: 120 meq.K: 9 meq. most likely diagnosis -: (A) Primary hypothyroidism, (B) Cong. adrenal hyperplasia, (C) Panhypopituitarism, (D) Pyloric stenosis
Answer is B. None