All are common in Down syndrome, except ?
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.
Simian crease
Clinodactyly
Mother's age > 35 years
Respiratory tract infection uncommon