This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'Which of the following conditions causes alopecia without scarring - \nSelect and explain. \nA. DLE, B. Herpes Zoster, C. Alopecia areata, D. Lichen planus pilaris', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Causes of cicatricial alopecia: -Discoid lupus erythematosus and morphea - developmental /hereditary : aplasia cutis -traumatic, post radiation -herpes zoster,inflammatory tinea capitis and bacterial infections -lichen planopilaris - neoplastic disorders Ref Harrison20th edition pg 1236', 'role': 'assistant'}]