Vaginitis

Why does bacterial vaginosis keep coming back? Gynecologist in Seoul, Korea

The short answer

BV recurs because antibiotics clear the overgrowth but do not always restore the protective lactobacilli that keep the vagina acidic. Triggers such as frequent sex (semen is alkaline) and douching can tip the balance again. Recurrence is common; for repeated episodes we test for other infections and adjust treatment.

Bacterial vaginosis has one of the highest recurrence rates of any vaginal infection. Treatment kills the overgrown bacteria, but the healthy lactobacilli may take time to return.

Common triggers

  • Frequent intercourse, because semen raises vaginal pH
  • Douching or washing inside the vagina
  • Scented soaps and washes

What we do for recurring BV

  • Confirm the diagnosis with a swab each time
  • Check for co-infections with a vaginitis and STD panel
  • Discuss longer or alternative treatment plans

See bacterial vaginosis for symptoms and treatment.

Answered by Dami Women's Clinic (다미산부인과의원), Yeouido, Seoul · Dr. Ko Sang-hyun, OB/GYN. General information, not a diagnosis. Emergencies in Korea: call 119. Medical disclaimer · International Patient Center