Pediatrics A 5 year old child presents with mental retardation, seizures, with lighter skin complexion. The diagnosis is A Maple syrup urine disease B Albinism C Phenylketonuria D Alkaptonuria 💡 Explanation A 5 year old child presents with mental retardation, seizures, with lighter skin complexion. The diagnosis is ✓ Correct Answer: C. Phenylketonuria