Yeast infections of the skin are called cutaneous candidiasis and are caused by yeast-like fungi called candida. They occur when yeast on the skin grows more actively and causes a red, scaling, itchy rash on the skin. Yeast infections are not contagious.
Yeast infections may affect nearly any skin surface on the body, but are most likely to occur in warm, moist, creased areas including the armpits and the groin. Candida infection is especially common among people who are obese or who have diabetes. People taking antibiotics are also at risk.
Candida can cause diaper rash in infants and can cause infections of the nail. Oral thrush is a form of candida infection that is found in the mouth. Candida also causes vaginal yeast infections.