Candidiasis is a fungal infection caused by a yeast (a type of fungus) called Candida. Some species of Candida can cause infection in people; the most common is Candida albicans. Candida normally lives on the skin and inside the body, in places such as the mouth, throat, gut, and vagina, without causing any problems.
When there’s an overgrowth of this fungus, it can lead to yeast infection. The groin area is especially prone to Candida overgrowth because of skin folds and moisture. Still, penile yeast infections are most commonly caused by having unprotected vaginal intercourse with a woman who has the infection too.
Candidiasis, often known as thrush, is caused by an overgrowth of, or an allergic reaction to, a yeast called Candida albicans. This yeast is usually found in many areas of the body and is not considered to be a sexually transmissible infection.
An overgrowth of candida or penetration of the fungus into deeper vaginal cell layers causes the signs and symptoms of a yeast infection. Overgrowth of yeast can result from: Antibiotic use, which causes an imbalance in natural vaginal flora.
In otherwise healthy people who have thrush, cutaneous candidiasis, or vaginal yeast infections, Candida infections usually can be eliminated with a short treatment (sometimes a single dose) of antifungal medication.