Vaginitis may be caused by bacteria, yeast, or other germs.
The three most common causes of vaginitis are:
Yeast infection (caused by the excess growth of yeast in the vagina).
Bacterial vaginosis (caused by the excess growth of bacteria in the vagina).
Trichomoniasis (a sexually transmitted infection caused by a protozoan).
Another type of vaginitis is atrophic vaginitis. This is an irritation of the vagina caused by thinning tissues and less moisture in the vaginal walls. This often occurs with menopause as a result of the decrease in the hormone estrogen.
Other causes of vaginitis may include:
- scented panty liners, spermicide, soaps, and other perfumed products
- allergens including topical antifungal agents, semen, and latex