Let me preface with: I have been tested for literally everything, and still seem to be a medical anomaly. Want to see if anyone else has experience with this.

Since age 18 (so ongoing for 11 years), I have had dark discharge between my periods. Usually dark brown or black. This discharge makes me extremely itchy (think wanting to rip off your labia just to make it stop). Three separate GYN specialists, multiple pap smears and vaginal cultures and biopsies have shown nothing. Pill changes and PH remedies have not helped. It's grown worse over the last year.

The only thing that does help is vaginal numbing cream, but this all interferes with my sex life in the worst way.

Really I am desperate. Has anyone else experienced this? Any helpful conclusions? Recommendations?