I simply refer to a post including comments made by Dr John Lovas which is in the archives of curezone.
Obese patients get Candidiasis in their (sweatty) fat folds & people who
wear rubber boots or other rubber-soled footwear get "athlete's foot" -
why, because skin is normally dry. Constant moistening of skin "macerates"
(softens & breaks down) the outer keratin barrier to microorganisms (mixed
oral / skin flora), which thus overgrow, stimulating, in the case of
Candida, epithelial proliferation (pseudoepitheliomatous hyperplasia), as
well as an inflammatory / immunologic response. This at least partially
explains "chapped lips", exfoliative cheilitis and angular cheilosis.
Dr. John G.L. Lovas
Div. of Oral & Maxillofacial Pathology
Faculty of Dentistry
5981 University Avenue
Halifax NS CANADA B3H 3J5
Phone: (902) 494-1413