Not a feature of Hanup's disease:: (A) Pellagroid skin lesion, (B) Cerebellar ataxia, (C) Mental retardation, (D) Psychological disturbances
Answer is C. Hanup disease: Most children remain asymptomatic In symptomatic patient- cutaneous photosensitivity: pellagra-like rash on sun exposure Some patients may have intermittent ataxia & psychological disturbances, but mental development is usually normal.