CHICAGO -- The vast majority of women experiencing genitourinary syndrome of menopause (GSM) symptoms did not receive a prescription for hormonal vaginal therapies prior to seeking care at a specialized menopause clinic, according to research presented at the North American Menopause Society (NAMS) 2024 Annual Meeting in Chicago on September 12.

"GSM symptoms are very common and affect women's health and quality of life, often worsening without effective therapy," Leticia Hernández Galán, PhD, of the Department of Obstetrics & Gynecology, McMaster University, Hamilton, Ontario, Canada, and colleagues reported. "We have demonstrated that most women seeking specialty care in an urban center with GSM symptoms have not been given a trial of local vaginal therapies by referring providers despite guidelines about safety and lack of contraindications. Given very long wait times for menopause providers in Canada, improved education for both women and their providers is needed to reduce needless suffering and improve care."

Stephanie Faubion, MD, MBA, director of the Mayo Clinic Women's Health in Jacksonville, Florida, and medical director of The Menopause Society, was not involved with the study but agreed with the authors' assessment of the findings.

"This study highlights the treatment gap for women with genitourinary syndrome of menopause," Faubion told Medscape Medical News. "Clearly, there is underutilization of low-dose vaginal hormonal therapies, which are known to be safe and effective. We still have work to do in terms of educating both women and providers on established treatment options for this common concern in menopausal women."

The findings match previous ones that found a majority of women with GSM do not receive treatment. A 2017 study, which was cited in the 2020 Menopause Society position statement on the condition, found that half of women with GSM had never used any treatment.

GSM is the current term that replaces previously used "vulvovaginal atrophy" and "atrophic vaginitis" because it encompasses all the menopause symptoms and signs associated with menopause that affect the vagina, vulva, and urinary tract. Anywhere from 50% to 84% of postmenopausal women experience GSM, the authors noted, with symptoms that include "burning, itching, or irritation of the vulva" and "lack of lubrication and discomfort or pain with sexual activity as well as dysuria, increased frequency or urgency of urination, and increased risk for urinary tract infections."

First-line treatment of mild GSM often includes nonhormonal vaginal lubricants and moisturizers, but vaginal estrogen is considered the most effective treatment for more severe or bothersome cases. Other treatments include systematic hormone therapy and ospemifene or other selective estrogen receptor modulators.

Untreated GSM is not simply a quality of life issue; it increases the risk of developing serious UTIs, explained JoAnn Pinkerton, MD, a professor of obstetrics and gynecology at the University of Virginia in Charlottesville, Virginia, who was not involved in the study.

"Estrogen depletion alters the vaginal epithelium, with distinct impairments in lubrication, elasticity, pH, and blood flow," Pinkerton said. "The vaginal microbiome changes, with increasing pH following menopause and loss of lactobacillus predominance. These alterations allow a more hospitable environment for bacterial growth and increase the risk of UTI." Vaginal estrogen, meanwhile, reduces UTI risk because it "increases the presence of lactobacillus in the vagina due to improvements in vaginal pH, rebuilding superficial cells, elasticity, and connectivity," she said.

The study assessed the incidence of GSM among patients at a single specialized Canadian institution, St. Joseph's Healthcare Menopause Clinic in Hamilton, Ontario, Canada, between January 2021 and August 2024. Patients completed a Menopause Rating Scale that quantified two sets of GSM symptoms relating to "dryness of the vagina" and "bladder problems." Patients also answered questions about the provider they had seen before coming to the specialized clinic and whether they had been prescribed local vaginal products before their visit.

Among 529 patients, the average age was 51, and the vast majority (88%) had some amount of tertiary education beyond high school. Only 21.5% were still menstruating, whereas the other respondents had stopped menstruating. The patient population was mostly White (85.6%), with Black, Hispanic, Asian, Middle Eastern, and Indigenous patients making up most of the other patient groups.

Among the 521 patients who answered the question on vaginal dryness, answers were similarly split between none (26%), mild (23%), moderate (21%), severe (15%), and very severe (15%). One third of the 526 women (34%) who answered the question on bladder problems said they had none, whereas the remainder reported their problems as mild (24%), moderate (24%), severe (11%), or very severe (7%).

Despite about half the participants reporting moderate to very severe vaginal dryness, 85% of them had not been prescribed local vaginal hormone therapies before their visit to the menopause clinic. Women were more likely to have been prescribed a localized therapy if they were older, were postmenopausal instead of perimenopausal, or had a female healthcare provider prior to this visit.

The survey also asked about the specialty and years in practice for the providers women had seen before visiting the clinic, but neither of these were predictors for receiving a hormone prescription. The patient's education, partner status, and ethnicity were also not associated with the likelihood of a prescription.

Among 62 women who had been prescribed a vaginal hormone treatment, most were prescribed Vagifem (29%) or Premarin Vaginal cream (26%), followed by Intrarosa (19%), Estragyn cream (16%), Estring (3%), or something else (18%).

Pinkerton described how GSM, particularly in older women, can run the risk of becoming life-threatening if untreated and unrecognized.

"For some women, UTIs can lead to urosepsis, as both the vaginal tissues and bladder tissues are thin with blood vessels close to the surface," Pinkerton said. "What may have started as a UTI, can ascend to the kidneys or get into the bloodstream, which, in some, can develop into urosepsis, which can be life-threatening. The bacterial pathogen initiates the disease process, but host immune responses drive whether sepsis develops and its severity."

The research by Hernández Galán was funded by the Canadian Institutes of Health Research, the Canadian Menopause Society, and Pfizer. Faubion had no disclosures, and Pinkerton has run a trial funded by Bayer and is a consultant for Bayer and Pfizer.