A yeast infection involves an overgrowth of fungus ... coli is usually harmless when it's in its usual place: the anus. But it becomes problematic if it makes the short journey from a person's ...

Medically reviewed by Soma Mandal, MD An untreated yeast infection that persists for too long, can lead to complications that require medical attention. These include painful sores, infertility, or ...

A yeast infection in the vagina is known as vulvovaginal candidiasis (can-dih-DYE-uh-sis). Vaginal yeast infections are common, and many girls will have one at some point. Treatment can clear up the ...