This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
A patient came with exudative lesions in cubital fossa, popliteal fossa & neck. The diagnosis is 
Select and explain. 
A. Dermatitis herpetiformis, B. Pemphigus, C. Psoriosis, D. Atopic dermatitis
D: Atopic dermatitis
Answer: D: Atopic dermatitis 
Explanation: Complaints of exudative lesions suggests of eczema (and underlying spongiosis). And involvement of flexural areas is a typical feature of Atopic dermatitis in adults.