This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin lesions and disorders of pigmentation, Subject name: Dental
[{'content': 'Pityriasis alba may be a manifestation of \nSelect and explain. \nA. Atopic dermatitis, B. Worm infestation, C. Indeterminate leprosy, D. Vitiligo', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pityriasis Alba Both indeterminate leprosy and pityriasis alba are seen on the face of children. Melanocytes decreased in number with fewer and small melanosomes. It Commonly affects children. Characterized as a mild form of atopic dermatitis. Clinical findings:- Pale pink/light brown macules with indistinct margins, powdery scale: more apparent on darker skinned patients. Treatment: Topical steroids, emollients. Ref:- Dermatology pictorial review by ASRA ALI; pg num:-167', 'role': 'assistant'}]