Definition: Irritant dermatitis occurring between folds or juxtaposed surfaces of the skin, as between the buttocks, between the scrotum and the thigh, beneath pendulous breasts, etc.; caused by friction, sweat retention, moisture, warmth, and concomitant overgrowth of resident microorganisms; occurring in young children (see diaper dermatitis) and obese adults.
[L. a galling of the skin, fr. inter, between, + tero, to rub]
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