Candidiasis is the medical term for yeast infections in the body. There are three common forms of candidiasis that relate specifically to the skin:

Oral Candidiasis (oral thrush). This infection is characterized by lacy, white patches on top of reddened areas that occur on the tongue, throat or elsewhere in the mouth. In children, it is usually accompanied by a fever, colic or diarrhea. Oral thrush can be painful and lead to an burning sensation in the mouth. Diabetics, those with immune suppression (HIV/AIDS or transplant patients), patients undergoing antibiotic or chemotherapy treatment and denture wearers are more susceptible oral thrush. It is important to treat oral disease, especially in children. Because of the discomfort caused by oral thrush, patients may stop eating and/or drinking.

Diaper Rash. Candidiasis breeds in warm, moist environments and in the natural creases of the skin. Diaper rashes can multiple causes include moisture, friction and infrequent diaper changes, but yeast can exacerbate or even be the sole cause of the disease. First line treatment includes frequent diaper changes, proper and thorough cleaning during changes, allowing the buttocks and perianal region to dry thoroughly and application of a barrier preparation (zinc oxide, petrolatum or combination products). If simple measures are not effective, a health care professional may need to prescribe topical agents including a topical anti-yeast or anti-fungal agent to reduce yeast and allow for healing.

Candidal Intertrigo. This yeast infection occurs in moist overlapping skin folds, such as areas in the inner thighs, armpits, under the breasts, below the belly, behind the ears and in the webbed spaces between the fingers and toes. It is more common among people who are overweight and thus have more skin folds. It is characterized by moist, red, raw skin surrounded by scaling and, in some cases, lesions that itch, ooze or are painful. Candidal intertrigo is treated with medicated topical creams.