Atopic Dermatitis and Its Analogues (lichen simplex chronicus, prurigo nodularis, picker’s nodules, and erosions and ulcerations secondary to excoriation) | Chondrodermatitis Nodularis Helicis
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All of the lesions pictured, namely, macules, papules, erosions, and crusts, resulted from external trauma, to wit, excoriation, the condition being factitious entirely.
Ill-defined zone of lichenification, evidenced by thickening of skin whose markings are accentuated, resulted from persistent, firm rubbing; the hemorrhagic crusts derived from animated scratching.
All of the changes depicted, i.e., hemorrhagic crusts atop papules and scale-crusts that cover ill-defined plaques punctuated by fissures, result from scratching and rubbing.