Which histologic findings are characteristic of excoriation (skin-picking) disorder?

Updated: Jul 10, 2018
  • Author: Roxanne Graham, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

Biopsy samples of neurotic excoriations generally reveal epidermal ulceration with a mild superficial mixed infiltrate and crusts formed from fluid and red blood cells (RBCs). In older lesions, superficial dermal scar tissue and changes of lichen simplex chronicus (eg, irregular epidermal hyperplasia with hyperkeratosis, hypergranulosis, and vertical streaking of papillary dermal collagen) may be observed.


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