Coronary artery aneurysm
Ans. D. Coronary artery aneurysm
Explanation: Fever more than 5 days, strawberry tongue, non-purulent conjunctivitis, polymorphous rash, skin excoriations are all very classic of Kawasaki disease. The most serious and important preventable complication is the development of coronary aneurysms. Early diagnosis and prompt administration of IVIG and aspirin are thus warranted in all cases.