Just throwing this out there since many women suffer from this for years without ever knowing what it is or how to treat it. Sadly even most doctors misdiagnose or suggest wrong treatments for it.
It's an imbalance of the bacteria in the vagina. It causes swelling, burning and itching of the outer parts including the labia, clitoris and hood. The symptoms usually start on or after ovulation and last until the start of the next period, though for some unlucky women it can actually start on your period and last until soon after.
The treatment for it doesn't include any medications or necessitate any doctor visits *talk about wasted money there* All you need is a sitz bath for use at home.
Here is a site with plenty of information and a good sitz bath recipe. I hope this helps for anyone who's now or has ever/will ever suffer from this problem.
Fill your sitz bath or container with about two inches of water (any temperature) and mix in 2-4 tablespoons of baking soda. Sit in the sitz bath or tub for 15 minutes twice a day. Do this two or three times in the first week.1
Then do it once or twice a week to keep the cytolytic vaginosis away.1 I'm not a doctor but I wonder if once you're into maintenance mode whether simply chucking a handful of it into your bath once a week to make a baking soda bath might be a simple way of keeping yourself free. Try to spread the lips of the vulva and ensure that plenty of this water flows in.
As a pleasurable maintenance method for those of you who live near the ocean, try bathing every day in the sea water. With a pH of 8, sea water is a perfect antidote for the acidity of CV.