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
"Head light" sign is seen in 
Select and explain. 
A. Tinea capitis, B. Dermatofibroma, C. Atopic dermatitis, D. Alopecia areata
C: Atopic dermatitis
Answer: C: Atopic dermatitis 
Explanation: Perioral, periorbital and perinasal pallour seen in Atopic dermatitis is called as "Head light" sign.