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Clinical terms used to describe skin lesion.

Scale
Dry, horny, platelike excrescence; usually the result of imperfect cornification.

Lichenification

Thickened and rough skin characterized by prominent skin markings; usually the result of repeated rubbing in susceptible persons.

Excoriation

Traumatic lesion characterized by breakage of the epidermis, causing a raw linear area (i.e., a deep scratch); often self-induced.

Onycholysis

Separation of nail plate from nail bed.