Bacterial vaginosis (BV) is a vaginal infection caused by an overgrowth of bacteria. BV occurs when the natural balance of bacteria in the vagina is disrupted, leading to an increase in harmful bacteria. Researchers do not know the exact cause of BV, but it is most often associated with sexual activity. Factors that can increase the risk of developing BV include:

• Having multiple sex partners
• Having a new sex partner
• Not using condoms or dental dams
• Having an intrauterine device (IUD)
• Using douches
• Taking antibiotics
• Being pregnant

It is important to note that BV is not a sexually transmitted infection (STI), but it can increase the risk of getting an STI such as chlamydia or gonorrhea. BV can also lead to complications during pregnancy, such as premature birth and low birth weight. If you suspect you have BV, it is important to see a healthcare provider for diagnosis and treatment with antibiotics.