Obstetrics and Gynecology· Topic 11.6 Menstrual disorders, contraception, and menopause· 11.6.17

Genitourinary syndrome of menopause

Genitourinary syndrome of menopause is the chronic, progressive constellation of vulvovaginal and lower urinary tract symptoms caused by estrogen deficiency, presenting with vaginal dryness, dyspareunia, and recurrent urinary symptoms in menopausal women. It is a clinical diagnosis treated first with nonhormonal moisturizers and lubricants, then low-dose vaginal estrogen, with ospemifene or vaginal prasterone reserved as second-line options.

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What this article covers

  • Overview

    Genitourinary syndrome of menopause (GSM) is the estrogen-deficiency syndrome of the vulva, vagina, and lower urinary tract: falling estrogen thins and de-vascularizes the genitourinary epithelium…

  • Epidemiology

    Affects a substantial proportion of postmenopausal women, with prevalence rising the longer a woman is past menopause.

  • Risk factors

    Natural or surgical menopause: the dominant driver, from loss of ovarian estrogen production.

  • Pathophysiology

    Estrogen deficiency removes trophic support from the vaginal, vulvar, and lower urinary tract epithelium: estrogen receptors are dense in these tissues, and withdrawal thins the mucosa.

  • Clinical features

    Vaginal dryness is the most common and earliest symptom, reported by most affected women.

  • Differential diagnosis

    Vulvovaginal candidiasis: itching with thick, white, curdy discharge and vulvar edema/excoriation; wet mount shows yeast, hyphae, or pseudohyphae, unlike the atrophic, low-inflammation picture of GSM.

  • Diagnosis

    GSM is a clinical diagnosis: history of a hypoestrogenic state (menopause, lactation, or antiestrogen therapy) plus the characteristic symptom triad of vaginal dryness, dyspareunia, and urinary…

  • Management

    Start with nonhormonal, first-line therapy for all patients regardless of severity: as-needed vaginal lubricants at the time of intercourse plus a vaginal moisturizer used regularly (for example…

  • Complications

    Progressive introital and vaginal stenosis from unopposed atrophic narrowing, causing worsening dyspareunia and, if severe, difficulty tolerating pelvic examination.

  • Prognosis

    Symptoms reliably improve with appropriate, sustained therapy: most women have significant relief of dryness, dyspareunia, and urinary symptoms within weeks of starting vaginal moisturizers or low-dose vaginal estrogen.

  • Prevention

    Counsel all women approaching or past menopause about expected genitourinary changes so symptoms are reported early rather than assumed to be an unavoidable consequence of aging.

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