Desquamation
Pronunciation: des-kwah-MAY-shun
The normal or pathological shedding of the outermost layers of the skin (stratum corneum) in scales or sheets.
Full Definition
Desquamation refers to the physiological process of skin cell turnover in which corneocytes are shed from the skin surface, or to pathological exfoliation seen in conditions such as scarlet fever, toxic shock syndrome, and ichthyosis. The term derives from the Latin 'squama' (scale). Editors frequently encounter 'desquamation' confused with 'exfoliation': while both describe shedding, 'desquamation' is the preferred clinical term for pathological or post-infectious peeling. Adjectival forms include 'desquamative' and, less commonly, 'desquamating.'
Usage
Usage note: Use 'desquamation' in clinical contexts; reserve 'exfoliation' for cosmetic or lay descriptions. The adjective is 'desquamative,' not 'desquamatory.'
In Context
- "Fine desquamation of the trunk followed the resolution of the scarlatiniform rash." — Pediatric dermatology case note
- "Editors should prefer 'desquamation' over 'exfoliation' in clinical dermatology copy." — Style guide note