Clinical features of "hypothyroidism" in a newborn are all except:: (A) Sluggishness +++, (B) Large tongue, (C) Large posterior fontanel, (D) Mental retardation
Answer is D. d. Mental retardation(Ref: Nelson's 20/e p 2669-2773, Ghai 8/e p 516-521)Mental retardation (Intellectual disability) develops by 3-6 months of age (not in neonatal period).