What is Candidiasis?

Candidiasis is an infection caused by any of several types of yeast (fungus) called Candida. The most common is called Candida albicans. This yeast is normally present on the skin, in the intestines and in the vagina, but doesn’t cause disease. However, sometimes it can develop into an infection—usually of the mouth, vagina or skin—that causes red or white patches, itching and irritation.

Candidiasis is not usually a dangerous infection, but in some people it can spread through the bloodstream to other parts of the body such as the heart valves, the spleen, the kidneys and the eyes. This "invasive candidiasis" is a much more serious condition and can be fatal.