This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Alopecia, Subject name: Skin
[{'content': 'Non scarring loss of hair - \nSelect and explain. \nA. Alopeciaareata, B. Lichenplanus, C. SLE, D. Dissecting folliculitis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e.. Alopecia areata Causes of cicatricial alopeciaPrimary' Cutaneous disordersSystemic disorderso Cutaneous lupus (DLE)o SLEo Lichen planuso Sarcoidosiso Folliculitis decalvanso Cutaneous metastasiso Linear scleroderma (morphea) o Lupus vulgaris o Leprosy o Injury, bum, radiation o Central centrifugal cicatricial alopecia Causes of non-cicatricial alopeciaPrimary Cutaneous disordersSystemic disordersDrugsTelogen effluviumSLEWarfarinAnagen effluviumSecondary' syphiilisHeparinTinea capitisHypothyroidismVit-AAlopecia areataHyperthyroidismPropylthiouracilTraumatic alopecia (trichotelomania)HypopitutarismLithiumAndrogenic alopeciaDefici ency of protein, Fe, Zn, BiotinBeta blockersColchicinesAmphetamines", 'role': 'assistant'}]