There are certainly some conditions that can CAN cause chronic vaginitis. You will see it more commonly with women who are obese, have diabetes, use steroids, eat a lot of sugar or even women who wear the wrong kind of panties and hose that won't allow air to circulate freely.

If any of the above are issues for you, you might want to start attacking the problem by addressing these first.

You should also:

• Avoid exercise (because it causes sweating)
• Keep the vaginal area as clean and dry as possible
• Take showers and not long baths. The shorter the amount of time you vaginal area is wet, the better
• Wear only cotton panties and no hose
• Use an unscented soap
• Wipe from front to back

I am sure you're aware of the normal drug therapies but I am listing them below:

Topical and oral therapies are considered to be almost equally effective.

• Topical therapies—may initially cause burning from inflammation: polyenes (nystatin)—one tablet twice a day for two weeks placed high in the vagina with applicator; 70% to 80% effective; no side effects on other parts of the body. Azole derivatives such as imidazole (such as miconazole, butoconazole) and triazole (such as fluconazole, terconazole)—vaginal cream one to five days, also may be used externally; 85% to 90% effective; no side effects on other parts of the body.
• Oral therapies: fluconazole—75% to 92% effective; 150 mg once; often considered the treatment of choice; should not be used during pregnancy; appears to help HIV infected women. Ketoconazole—83% effective; 400 mg/day for five days, or for two weeks with recurring infection. Oral nystatin helps reduce intestinal problems.

source

There is also a great site here:

http://www.umm.edu/altmed/ConsConditions/Vaginitiscc.html

that lists alternative therapies that you might want to try.

Let me know if you still have questions.