Bacterial vaginosis, often called BV, is a common vaginal condition that happens when the normal balance of bacteria in the vagina changes. BV is not the same as a yeast infection, and it is not treated the same way. BV can cause discharge, odor, itching, burning, or irritation, but some people have no symptoms at all. BV symptoms may include thin white or gray discharge, vaginal pain, itching or burning, a strong fish-like odor especially after sex, burning with urination, a