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The alopecias of discoid lupus erythematosus and of lichen planus share several findings histopathologic, among them being perivascular, peri-infundibular, and perifollicular infiltrates of lymphocytes, vacuolar alteration at the junction between infundibula and dermis, infundibula plugged by orthokeratotic corneocytes, and fibrotic tracks at sites of extinct hair follicles. The attributes crucial for differentiation histopathologic of the […]