My Girlfriend experiences severely itchy vagina, why? My girl in the last year and a half has been itching herself raw. She is a very clean person which showers everyday.  She is 40 years old.  Medically she has been checked for the following:  Yeast infection - Negative, bloodwork for Premenapause and Diabetes, all blood work came back negative.  Has tried over fifteen different prescribed and over the counter creams, such as cortisone creams, Vagisal, and even cornstarch, which none of the above have stopped her itching problem overall.  No vaginal diseases or crabs.  Is there anyone out there that may have the answer to end her problem?  For anyone thats going to come up with the sugesstion that it could be sweat or being overweight should know that she is at a lighter weight than she has been in her past.  Please help!!

Summarized question: What excluding infections and pre-menopausal changes can cause vaginal itching and what could stop it?