- Tricia GLv 51 decade agoFavorite Answer
It's where a type of fungus infects various body parts (vagina, mouth, etc. but most common discussion of it is in the vagina). It is caused when the natural balance of the vagina is disrupted or irritated by things like douching, the introduction of foreign substances (sugars, etc.). The yeast can then grow and cause problems.
external use of irritants (such as some detergents or douches) or internal disturbances (hormonal or physiological) can perturb the normal flora, ... and an overgrowth of yeast can result in noticeable symptoms. Pregnancy, the use of oral contraceptives, engaging in vaginal sex immediately and without cleansing after anal sex, and using lubricants containing glycerin have been found to be causally related to yeast infections. Diabetes mellitus and the use of antibiotics are also linked to an increased incidence of yeast infections. Diet has been found to be the cause in some animals. Hormone Replacement Therapy and infertility treatments may also be predisposing factors.
Symptoms include severe itching, burning, and soreness, irritation of the vagina and/or vulva, and a whitish or whitish-gray discharge, often with a curd-like appearance.
You can read more about it here: http://en.wikipedia.org/wiki/Yeast_infectionSource(s): http://en.wikipedia.org/wiki/Yeast_infection