Skin Candida, Candidiasis. Candida is an yeast type of fungus that occurs on the skin and cavities of the body but will not cause an infection in most cases. A candida infection, known as candidiasis, is more likely to occur on the skin although it can also infect the vagina, mouth or intestines.Infection of the latter two sites is usually limited to immunocompromised patients like in HIV/AIDS. candida infection, known as candidiasis, is more likely to occur on the skin although it can also infect the vagina, mouth or intestines. Infection of the latter two sites is usually limited to immunocompromised patients like in HIV/AIDS.