Medicine General f5e99584 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 High-Yield Explanation No explanation provided.