Micro & Immunology · single question
Contact dermatitis is which type of hypersensitivity reaction?
Show answer and explanation
Correct answer: A. Type IV (delayed, cell-mediated)
Contact dermatitis = Type IV delayed hypersensitivity.
- A. Correct. Contact dermatitis is a T-cell–mediated delayed (Type IV) reaction.
- B. Type I is anaphylaxis/allergy (IgE/mast cells), not contact dermatitis.
- C. Type II is antibody-mediated cell destruction (e.g., transfusion reactions).
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