Dr. Lissa Rankin's medical blog is based on her upcoming book What's Up Down There? Questions You'd Only Ask Your Gynecologist If She Was Your Best Friend, which you can preorder here. If you have a question you'd like Dr. Lissa Rankin to answer in her blog, please join the What's Up Down There posse in our Owning Pink community, or contact us.

Q: I have an insanely itchy vulva and sometimes a rash that just won’t go away no matter what I try. I’ve been to three different doctors, including one who specializes in itchy vulvas, and I’ve tried every antibiotic, antifungal, steroid cream, pill, boric acid, etc. I’ve even cut back dramatically on sugar. (Not easy for me!) Nothing helps — I’m at the end of my rope. What could be going on here?