This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dermatitis Erythema, Subject name: Skin
A 25-yr man C/O recurrent episodes of flexural eczema, contact urticaria, recurrent skin infections & severe abdominal cramps & diarrhea upon taking sea foods. He is suffering from: 
Select and explain. 
A. Seborrheic dermatitis, B. Atopic dermatitis, C. Airborne contact dermatitis, D. Nummular dermatitis
B: Atopic dermatitis
Answer: B: Atopic dermatitis 
Explanation: Ans. B. Atopic dermatitisAtopic dermatitis is a very common, extremely itchy disorder of unknown cause which characteristically, but not always, affects the face and flexures of infants, children, adolescents and young adults. Foods, inhaled allergens, bacterial infection, reduced humidity; excessive sweating and irritants cart exacerbate pruritus and scratching.