Definition of Excoriate

Excoriate: To scratch or wear off the skin resulting in an abrasion. Skin picking disorder (SPD) (also called excoriation disorder) is characterized by deliberate and repetitive picking, scratching, rubbing, digging, or squeezing of skin, resulting in tissue damage. It is a type of obsessive-compulsive disorder (OCD).

QUESTION

Ringworm is caused by a fungus. See Answer
References
K, KKP, MD, et al. Skin picking (excoriation) disorder and related disorders. UptoDate. Reviewed: Sep 2019.

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