All are common in Down syndrome, except ?: (A) Simian crease, (B) Clinodactyly, (C) Mother's age > 35 years, (D) Respiratory tract infection uncommon
Answer is D. Ans. is 'd' i.e., Respiratory tract infection uncommon Chronic rhinits, conjunctivitis and periodontal disease are common in Down's syndrome. Lower respiratory tract infections pose a threat to life. Pneumonias are common in patients with Down's syndrome.