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: Skin
A 5 year boy with history of atopy has multiple asymptomatic oval and circular faintly hypopigmented macules with fine scaling on his face. What is he suffering from? 
Select and explain. 
A. Pityriasis alba, B. Acrofacial vitiligo, C. Pityriasis versicolor, D. Indeterminate leprosy
A: Pityriasis alba
Answer: A: Pityriasis alba 
Explanation: The child in the question is suffering from Pityriasis Alba. It is characterised by the presence of hypopigmented scaly macules of variable size. It is commonly found in the cheek of children and is self limiting. Topical steroids/ tacrolimus may have a role in ceain cases, but is not usually necessary. Ref: Clinical Manual of Emergency Pediatrics By Ellen F. Crain, 5th Edition, Page 130.