Published on Jul 01, 2026 | 9:43 AM
Bacterial vaginosis (BV) and yeast infections are two of the most common causes of vaginal symptoms, but they are not the same condition.
Because both can cause irritation, discharge, and discomfort, many women assume they have a yeast infection when the problem is actually BV—or vice versa.
The good news is that there are often clues that can help distinguish between the two.
Understanding the differences can help you get the right treatment sooner and avoid using medications that may not work for your condition.
Thin discharge
Gray or white discharge
Fishy odor
Symptoms often worsen after sex
Mild irritation or no irritation
Thick white discharge
Cottage cheese-like appearance
Intense itching
Redness and irritation
Burning sensation
Severe pain
Fever
Pelvic pain
Recurrent infections
Symptoms during pregnancy
Symptoms that continue worsening
Many women experience vaginal symptoms at some point in their lives.
When itching, discharge, odor, or irritation develops, it's common to assume the cause is a yeast infection.
However, bacterial vaginosis is actually more common than many people realize.
Because the treatments for BV and yeast infections are different, recognizing the signs of each condition can help you choose the appropriate next steps.
Bacterial vaginosis occurs when the natural balance of bacteria in the vagina becomes disrupted.
The vagina normally contains a mix of healthy bacteria.
When certain bacteria begin to overgrow, BV can develop.
BV is not technically considered a sexually transmitted infection, but sexual activity can increase the risk.
Other factors that may contribute include:
New sexual partners
Multiple sexual partners
Douching
Changes in vaginal pH
Smoking
BV is one of the most common causes of vaginal discharge among women of reproductive age.
A yeast infection occurs when a fungus called Candida grows excessively.
Small amounts of Candida normally live in the body without causing problems.
However, when conditions allow the yeast to multiply, symptoms can develop.
Common factors that increase the risk of yeast infections include:
Recent antibiotic use
Pregnancy
Diabetes
Hormonal changes
Weakened immune system
Warm, moist environments
Yeast infections are extremely common and affect millions of women every year.
One of the easiest ways to distinguish BV from a yeast infection is odor.
BV frequently causes a noticeable fishy smell.
Many women report that the odor becomes stronger after sexual intercourse.
A yeast infection typically does not cause a strong odor.
While some women may notice a mild smell, a fishy odor is much more suggestive of BV.
Although odor alone cannot provide a diagnosis, it is often an important clue.
The appearance of vaginal discharge can also provide useful information.
BV commonly causes:
Thin discharge
Gray discharge
White discharge
Watery consistency
Yeast infections more commonly cause:
Thick white discharge
Clumpy discharge
Cottage cheese-like appearance
Not every woman experiences textbook symptoms, but discharge patterns often help distinguish between the two conditions.
Itching tends to be much more severe with yeast infections.
Women with yeast infections often describe:
Intense itching
Burning
Redness
Swelling
Irritation around the vaginal opening
BV may cause mild irritation, but some women experience very little itching at all.
When severe itching is the primary symptom, a yeast infection is often more likely.
Although symptoms can provide clues, it isn't always possible to accurately diagnose yourself.
Several other conditions may cause symptoms similar to BV or yeast infections, including:
Sexually transmitted infections (STIs)
Allergic reactions
Vaginal irritation
Hormonal changes
Other vaginal infections
This is one reason recurring symptoms should not be ignored.
Repeatedly treating the wrong condition may delay appropriate care.
Many women notice more vaginal symptoms during summer months.
Warm weather, sweating, wet swimsuits, and prolonged moisture can create an environment that may increase the likelihood of irritation and infection.
Common summer triggers include:
Staying in wet swimsuits
Tight workout clothing
Increased sweating
Travel
Changes in hygiene routines
Understanding these risk factors may help reduce future episodes.
Occasional infections are common.
However, recurrent symptoms may indicate an underlying issue.
Frequent episodes may be associated with:
Diabetes
Hormonal changes
Sexual health factors
Antibiotic use
Other medical conditions
Women experiencing repeated symptoms should consider medical evaluation rather than repeatedly self-treating.
Most BV and yeast infections are not medical emergencies.
However, some symptoms warrant prompt evaluation.
Fever
Pelvic pain
Severe abdominal pain
Symptoms during pregnancy
Recurrent infections
Bloody discharge
Symptoms that continue worsening
These symptoms may indicate a more serious condition.
Thin discharge
Fishy odor
Mild irritation
Gray or white discharge
Thick white discharge
Itching
Burning
Redness
Irritation
These symptoms often improve with appropriate treatment.
Fever
Pelvic pain
Severe pain
Recurrent infections
Symptoms during pregnancy
Unexplained bleeding
Symptoms that worsen despite treatment
These symptoms should not be ignored.
No. BV is not considered a sexually transmitted infection, although sexual activity may increase the risk.
Some cases may improve without treatment, but many require prescription medication to fully resolve.
Yeast infections often cause thick, white, clumpy discharge that may resemble cottage cheese.
BV occurs when certain bacteria overgrow, producing compounds that create a fishy smell.
Yes. It is possible to have both conditions simultaneously.
Vaginal symptoms can be uncomfortable, frustrating, and sometimes difficult to identify on your own.
CallOnDoc offers convenient online evaluations for women experiencing symptoms of bacterial vaginosis, yeast infections, and other common vaginal health concerns.
Licensed providers review your symptoms and medical history and, when medically appropriate, can recommend treatment options without requiring an in-person office visit.
Whether you're dealing with symptoms at home, while traveling, or during a busy schedule, care may be available from wherever you are.
Bacterial vaginosis and yeast infections are common, but they are different conditions with different causes and treatments.
BV is often associated with a fishy odor and thin discharge, while yeast infections are more commonly linked to itching, irritation, and thick white discharge.
Although symptoms can provide helpful clues, self-diagnosis isn't always accurate.
When symptoms are severe, recurrent, or not improving, seeking medical evaluation can help ensure you receive the right treatment and get relief sooner.
Shelly House, FNP, is a Family Nurse Practitioner and Call-On-Doc’s trusted medical education voice. With extensive experience in telehealth and patient-centered care, Ms. House is dedicated to making complex health topics simple and accessible. Through evidence-based content, provider collaboration, and a passion for empowering patients, her mission is to break down barriers to healthcare by delivering clear, compassionate, and practical medical guidance.
The Call-On-Doc Guide to Vaginal Yeast Infections
Also called vaginal candidiasis, a vaginal yeast infection is a very common condition that causes itching, irritation, abnormal discharge, burning, and discomfort in and around the vagina and vulva.
Most women will experience at least one yeast infection during their lifetime. Some develop recurrent or chronic yeast infections, which may occur cyclically—often before the menstrual period—due to predictable hormonal shifts.
Yeast infections are most commonly caused by an overgrowth of Candida species, particularly Candida albicans. However, non-albicans species are increasingly recognized, especially in recurrent or treatment-resistant cases. Risk factors include diabetes (especially if poorly controlled), recent antibiotic use, pregnancy, estrogen exposure (including hormonal contraception or postmenopausal hormone therapy), immune suppression, and genetic susceptibility.
Aug 22, 2023 | 2:36 PM
Read MoreThe Call-On-Doc Guide to Bacterial Vaginosis
Bacterial vaginosis (BV) is a common vaginal condition caused by an imbalance of the natural bacteria that normally live in the vagina. It occurs when “good” lactobacilli decrease and other bacteria overgrow. BV is not considered a classic sexually transmitted infection, but sexual activity can increase the risk of developing it.
BV is most common in people of reproductive age and can recur even after treatment. While it is often mild, untreated BV can increase the risk of other infections and pregnancy complications.
Aug 08, 2023 | 5:16 PM
Read MoreEverything You Need to Know About Yeast Infections from Sex
Understanding when sex contributes, when it doesn’t, and how to prevent recurrence
Yeast infections are common and affect most women at some point in their lives. While they are not classified as sexually transmitted infections (STIs), sexual activity can sometimes contribute to their development.
Understanding the difference between infection, irritation, and transmission helps reduce confusion and unnecessary stigma.
Aug 07, 2024 | 9:30 AM
Read MoreThe Call-On-Doc Guide to Vaginal Yeast Infections
Also called vaginal candidiasis, a vaginal yeast infection is a very common condition that causes itching, irritation, abnormal discharge, burning, and discomfort in and around the vagina and vulva.
Most women will experience at least one yeast infection during their lifetime. Some develop recurrent or chronic yeast infections, which may occur cyclically—often before the menstrual period—due to predictable hormonal shifts.
Yeast infections are most commonly caused by an overgrowth of Candida species, particularly Candida albicans. However, non-albicans species are increasingly recognized, especially in recurrent or treatment-resistant cases. Risk factors include diabetes (especially if poorly controlled), recent antibiotic use, pregnancy, estrogen exposure (including hormonal contraception or postmenopausal hormone therapy), immune suppression, and genetic susceptibility.
Aug 22, 2023 | 2:36 PM
The Call-On-Doc Guide to Bacterial Vaginosis
Bacterial vaginosis (BV) is a common vaginal condition caused by an imbalance of the natural bacteria that normally live in the vagina. It occurs when “good” lactobacilli decrease and other bacteria overgrow. BV is not considered a classic sexually transmitted infection, but sexual activity can increase the risk of developing it.
BV is most common in people of reproductive age and can recur even after treatment. While it is often mild, untreated BV can increase the risk of other infections and pregnancy complications.
Aug 08, 2023 | 5:16 PM
Everything You Need to Know About Yeast Infections from Sex
Understanding when sex contributes, when it doesn’t, and how to prevent recurrence
Yeast infections are common and affect most women at some point in their lives. While they are not classified as sexually transmitted infections (STIs), sexual activity can sometimes contribute to their development.
Understanding the difference between infection, irritation, and transmission helps reduce confusion and unnecessary stigma.
Aug 07, 2024 | 9:30 AM
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