Pediatrics A child has microcephaly, Blue eyes, Fair skin, and Mental retardation, Ferric chloride test is positive. What is the likely diagnosis A Phenylketonuria (PKU) B Homocystinuria C Tyrosinosis D Alkaptonuria 💡 Explanation A child has microcephaly, Blue eyes, Fair skin, and Mental retardation, Ferric chloride test is positive. What is the likely diagnosis ✓ Correct Answer: A. Phenylketonuria (PKU)