<prompt> Non scarring loss of hair -AlopeciaareataLichenplanusSLEDissecting folliculitis  <response>: Ans. is a i.e.. Alopecia areata Causes of cicatricial alopeciaPrimary Cutaneous disordersSystemic disorderso Cutaneous lupus DLEo 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 trichotelomaniaHypopitutarismLithiumAndrogenic alopeciaDefici ency of protein, Fe, Zn, BiotinBeta blockersColchicinesAmphetamines 