Yeast infection, also known as candidiasis, is a common condition caused by the fungus Candida albicans. Candidiasis may occur in the vagina, mouth, or other moist areas of the skin.
Fungus is normally found in and on a person's body, but healthy bacteria keep it under control. A yeast infection occurs when there is an overgrowth of this fungus. Some conditions may contribute to an overgrowth, such as antibiotics, menopause, pregnancy, and sometimes birth control pills. Some types of disorders, medications, or conditions that cause hormonal changes in the body may also cause a yeast infection. Recurring yeast infections or yeast infections that are hard to control may be an early sign of diabetes.