A yeast infection is a fungal infection on the skin or any mucous membranes. A yeast infection is caused by the fungus Candida, and thus is also referred to as candidiasis. The most common yeast infection sites are the vagina and vulva (vulvovaginal candidiasis), the nails (onychomycosis), and the mouth and/or throat (oral thrush). 1Although vulvovaginal candidiasis is more common than penile, both…