This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Dermatitis, Subject name: Dental
M.C. site of Atopic dermatitis - 
Select and explain. 
A. Scalp, B. Elbow, C. Antecubital fossa, D. Trunk
C: Antecubital fossa
Answer: C: Antecubital fossa 
Explanation: Most common site for atopic dermatitis varies with age Atopic dermatitis most often occurs where your skin flexes -- inside the elbows, behind the knees and in front of the neck Ref Harrison20th edition pg 2534 Phase age Sites Infantile Bih to 2years Scalp in infants 3-6months manifests as seborrheic dermatitis cheeks, extensors of extremities Childhood 2years till pubey-13years Flexors of extremities popliteal and antecubital fossa Adult After pubey Flexors of extremities