All may lead to hives and wheals except –: (A) Cold, (B) Hepatitis C, (C) Serum sickness, (D) Typhoid fever
Answer is D. Urticaria is also referred to as hives.
Wheal is the characteristic lesion of urticaria.
Cold, serum sickness and Viral hepatitis (HBV, HCV) can cause urticaria.
Typhoid does not cause urticaria.