Dermatology – MCQ 11 – Diagnosis of air borne contact dermatitis

Air borne contact dermatitis can be diagnosed by:
a) Skin biopsy
b) Patch test
c) Prick test
d) Estimation of serum IgE levels

Correct answer : b) Patch test

In patch test, the suspected allergens are applied on the back of the patient under separate patches for 48 hours. The presence of dermatitis is then looked for.