Told md i have long term bv that didnt resolve for 1yr despite 2x metronidazole & several flagystain. without exam,md mentioned bactria vaginosis is a skin condition. how true is that & whats my next step? i still experience vulva pain/irritation?

BV is strictly vaginal, with overgrowth of vaginal bacteria. It often persists or recurs after treatment, but this has nothing to do with the skin. Maybe it isn't BV after all: BV symptoms are vaginal odor and discharge, not vulvar pain or irritation. Maybe yeast, which can be triggered by the treatments you have used. See a gyn who specializes in infections, or a genitourinary medicine doctor.