What Is a Yeast Infection?
A vaginal yeast infection is an infection resulting from the overgrowth of yeast — a type of fungus — of the genus Candida.
Candida normally live on the skin and inside the body (mouth, throat, gut, and vagina) without causing health problems. There are over 150 Candida species, about 15 of which are known to cause infections if they multiply out of control.
Also called candidal vaginitis, vaginal candidiasis, or vulvovaginal candidiasis, yeast infections are most commonly caused by Candida albicans. (1)
They are also commonly caused by several other Candida species, including C. glabrata, C. parapsilosis, C. tropicalis, and C. krusei.
Up to 75 percent of women will get a vaginal yeast infection at least once in their lives, and 40 to 50 percent of women will experience more than one infection, according to research published in The Lancet.
What's more, 5 to 8 percent of women experience recurrent, or chronic yeast infections, and come down with four or more yeast infections in a single year.
Additionally, men can get yeast infections in their genitals, mouths, and other areas.
With treatment, most yeast infections take from one to seven days to clear up. If symptoms persist for more than a week, check with your doctor to rule out a more serious condition.