Why STI Testing Should Accompany Every Vaginitis Diagnosis

Each year, millions of women are diagnosed with vaginitis, an infection that most will experience at least once in their lifetime. It's one of the main reasons women visit their OB/GYN. However, getting the right diagnosis can sometimes be tricky because vaginitis shares symptoms—like vaginal discharge or pain during urination—with other conditions, including sexually transmitted infections (STIs). This can often lead to delays or misdiagnoses. It's estimated 30% of women who have vaginitis symptoms are incorrectly diagnosed after they have been evaluated.

In recognition of STI Awareness Month in April, Dr. Staci Tanouye, a board-certified OB/GYN from Women's Care Florida, is speaking up and sharing a reminder that early diagnosis and proper treatment of both vaginitis and any potential STI co-infections are key to protecting women's health.

"As an OB/GYN, I've heard from many patients that they feel ashamed about their symptoms or simply can't find the time to make an appointment," said Dr. Tanouye. "As a result, many women try to self-diagnose, often thinking they have a yeast infection, potentially overlooking other conditions like bacterial vaginosis (BV), a common cause of vaginitis. This confusion can lead to serious risks like STIs, pelvic inflammatory disease, or pregnancy-related complications."

With the high number of vaginitis cases we're seeing every year and its potentially devastating impact on women's health, it's crucial to understand the true cause of symptoms—especially with vaginitis linked to an increased risk of STIs.

One study showed that 1 in 5 women with vaginitis symptoms also tested positive for at least one STI. Additionally, women who tested positive for BV had double the rate of STIs compared to those who were negative. Given the proven link between vaginitis and STI co-infections, the Centers for Disease Control and Prevention (CDC) recommends testing for STIs in all women diagnosed with BV.

Thankfully, advances in technology have made testing easier and more effective. Now, one simple vaginal swab can test for multiple infections, including the most common STIs, like chlamydia and gonorrhea, and causes of vaginitis.

"The best part about the latest methods is that patients don't have to come in for additional tests," said Dr. Tanouye. "The original sample can be used to run multiple tests at once. Women also can choose to collect the sample themselves in a private setting or have the doctor do it — something that many of my patients find comforting."

Because each case of vaginitis has different treatment needs, it's crucial for women to get an accurate diagnosis. With the right treatment, symptoms can be resolved quickly, and the risk of recurring infections is reduced.

"By working with a healthcare professional, women can ensure they get the right diagnosis and treatment the first time," added Dr. Tanouye. "Comprehensive testing accurately detects vaginitis and STI co-infections, which eases anxiety and discomfort, and helps women get back to their daily lives faster."