There are several types of this uncomfortable and common condition. Candidiasis is caused by infection with a yeastlike fungus called Candida albicans. Other forms of infectious vaginitis are bacterial vaginosis and trichomoniasis. All three types can be spread sexually.
Atrophic vaginitis affects women during menopause or after childbirth.
It's caused by decreased levels of the female hormone estrogen. As its name applies, irritant vaginitis can be caused by irritation. Allergies can also lead to irritant vaginitis. A diet high in carbohydrates and sugar alters the vaginal pH level, so that Candida albicans can grow more easily. Lowering your carbohydrate and sugar intake can be protective.