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Images 10.23.1A: Perivascular dermatitis, psoriasiform + 10.23.1B: Orthokeratosis, hypergranulosis, acanthosis, proliferation of infundibular and eccrine ductal keratocytes, and coarse bundles of collagen in vertical streaks = Lichen simplex chronicus (“epidermal and dermal” type) These changes were brought about entirely by force external, i.e., rubbing the skin with vigor, to and fro, at the same site […]