Candida is a fungus which grows in warm, moist creases where it causes a red rash. A candida rash (monilial rash) presents with groups of pustules. If severe the rash may ulcerate. It is typically seen in the creases covered by a nappy. This differs from the common nappy rash which is worse over exposed skin and spares creases.

Management consists of keeping the skin dry and applying mycostatin cream. For severe cases, oral mycostatin may be needed to clear the fungus from the gut and stool.