Vaginitis and Bacterial Vaginosis (BV): A Guide to Symptoms, Causes, and Testing
Vaginitis is a general term for inflammation of the vagina, and it can have several different causes. Bacterial vaginosis (BV) is one of the most common types of vaginitis. This guide explains what vaginitis and BV are, what symptoms they can cause, how testing is done, and when it makes sense to talk with a healthcare provider.
Key takeaways
- Vaginitis means inflammation of the vagina and can be caused by infections, irritants, or changes in the normal vaginal environment.
- Bacterial vaginosis (BV) results from an imbalance in the bacteria normally found in the vagina, not from a single outside germ.
- BV is not classified as a sexually transmitted infection, but sexual activity can influence the vaginal environment and make BV more likely.
- Vaginal discharge, odor, irritation, and discomfort are common reasons people seek testing for vaginitis or BV.
- Testing usually involves a clinical exam and a sample of vaginal fluid, which may be examined in a lab or with an in-office test.
- Treatment for BV is typically with prescription antibiotics, and treating sex partners is not routinely recommended for BV.
What Is Vaginitis?
Vaginitis is a broad term that describes inflammation of the vagina. It can be caused by infections such as bacterial vaginosis, yeast infections, or trichomoniasis, and it can also result from irritation, allergic reactions, or hormonal changes. Because the symptoms of different types of vaginitis overlap, the specific cause is often not obvious from symptoms alone.
The vagina normally contains a mix of bacteria and yeast in a balanced state. When that balance shifts, or when an irritant or infection is introduced, the lining of the vagina can become inflamed. This can lead to discharge, odor, itching, burning, or discomfort. Identifying the cause usually requires some form of testing rather than guessing based on symptoms.
What Is Bacterial Vaginosis (BV)?
Bacterial vaginosis is a condition in which the normal balance of bacteria in the vagina changes. Normally, certain helpful bacteria, often Lactobacillus species, are dominant. In BV, those bacteria decrease and other types of bacteria grow in larger numbers. This shift, rather than a single invading organism, is what defines BV.
BV is common and can affect people of any age who have a vagina. It is not considered a sexually transmitted infection, but sexual activity, new or multiple sex partners, douching, and certain hygiene practices can make it more likely. BV sometimes causes no symptoms at all, and in other cases it produces a thin gray or white discharge and a fishy odor, especially after sex or during menstruation.
Symptoms and When to Seek Testing
Common symptoms of vaginitis include changes in vaginal discharge, odor, itching, burning, irritation, and discomfort during urination or sex. BV specifically often causes a thin discharge and a noticeable odor, but it can also be silent. Yeast infections more often cause thick white discharge and intense itching, while trichomoniasis may cause frothy, yellow-green discharge and irritation.
Because symptoms overlap and BV can occur without symptoms, testing is the reliable way to identify the cause. Testing is especially reasonable when symptoms are new, persistent, or recurrent, or when someone wants clarity before treating. A healthcare provider can perform an exam and collect a sample of vaginal fluid to determine what is going on.
How Vaginitis and BV Are Tested and Treated
Testing for vaginitis and BV usually starts with a clinical history and a pelvic exam. A healthcare provider may collect a sample of vaginal discharge using a swab. That sample can be evaluated in a few ways, including looking at it under a microscope, checking the pH, performing a whiff test, or using a DNA-based test that detects specific organisms. The choice of test depends on the setting and the provider's assessment.
Treatment depends on the cause. BV is generally treated with prescription antibiotics, which may be taken by mouth or applied as a gel or cream. Treating male sex partners is not routinely recommended for BV. Yeast infections are treated with antifungal medications, and trichomoniasis is treated with antibiotics that also cover partners. If symptoms persist or return after treatment, follow-up testing can help identify why.
Frequently Asked Questions
is bacterial vaginosis an std
No, bacterial vaginosis (BV) is not classified as a sexually transmitted infection. It results from an imbalance in the bacteria normally present in the vagina. Sexual activity and certain practices can make BV more likely, but it can occur in people who are not sexually active, and it is not passed from one person to another the way sexually transmitted infections are.
What is the difference between vaginitis and bacterial vaginosis?
Vaginitis is a general term for inflammation of the vagina and can have many causes, including infections, irritation, and hormonal changes. Bacterial vaginosis is one specific type of vaginitis caused by a shift in the normal vaginal bacteria. In other words, BV is a subset of vaginitis, not a separate category.
Can bacterial vaginosis go away on its own?
BV sometimes resolves without treatment, but it often persists or returns. Because BV has been linked to other health considerations, such as an increased risk of certain infections, many healthcare providers recommend treatment with prescription antibiotics. If you have symptoms or recurring BV, it is worth discussing testing and treatment options with a provider.
How do I know if I have BV or a yeast infection?
The symptoms can overlap, so it is difficult to tell BV from a yeast infection based on symptoms alone. BV often causes a thin discharge with a fishy odor, while yeast infections more often cause thick white discharge and intense itching. Testing a sample of vaginal fluid is the reliable way to distinguish between them and choose the right treatment.
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