Not many people know what candida exactly is and what they look like. Candida or yeast infection is an infection caused by the overgrowth of a microorganism called Candida albicans. This particular fungus is normally found in the stomach as it aids in the digestive process. However, it can cause harmful side effects if it is found on other parts of the body such as the mouth, skin folds, the vagina and or the penis.