Skin lesions due to hypersensitivity appear
A) 24 hours after first exposure to antigen
B) 48-72 hours after first exposure to antigen
C) 24 hours after second exposure to antigen
D) 3 weeks after second exposure to antigen

Question

Quizplus · Accepted Answer

Hypersensitivity reactions, particularly Type IV (delayed-type hypersensitivity), typically manifest skin lesions 24-48 hours after re-exposure to the antigen, not the first exposure.

Skin Lesions Due to Hypersensitivity Appear