Recurring Cystitis Plagues Middle-Aged Women; Experts Offer Solutions

Cystitis diagnosed as 'recurrent' if occurring three or more times annually

Diabetes patients face higher infection risk due to impaired bladder function

Antibiotics unnecessary for 'non-bacterial' cases where no pathogen is identified

Cystitis is inflammation of the bladder that may or may not be associated with bacterial infection. When symptoms occur three or more times per year or twice within six months, doctors diagnose the condition as recurrent cystitis. The condition predominantly affects women, with men showing relatively low incidence rates.

This disparity stems from structural differences in the urinary systems of men and women. In women, the vagina, anus, and urethra are positioned close together, and the shorter urethral length allows pathogens to penetrate the bladder more easily. This elevates the risk of acute cystitis and frequently leads to recurrent cases.

Common causes of recurrent cystitis include pathogen exposure through sexual intercourse, increased residual urine due to impaired bladder function, pelvic organ prolapse, and atrophic vaginitis following menopause.

Impaired bladder function can result from diabetes, neurological disorders, or structural abnormalities. When bladder function declines, residual urine volume increases, creating an environment conducive to bacterial growth and repeated bacterial cystitis episodes.

Bladder function can be assessed by measuring urine flow rate and residual urine volume. Urodynamic studies are conducted when precise diagnosis is required.

Diabetic patients often have compromised immune function, and elevated glucose levels in urine facilitate bacterial proliferation, increasing urinary tract infection risk. As the condition progresses to diabetic cystopathy, early stages resemble overactive bladder with frequent urination. Over time, however, neuropathy develops, bladder capacity expands, and voiding function deteriorates.

Central nervous system conditions such as spinal cord injuries, Parkinson's disease, stroke, and multiple sclerosis can destroy neural circuits controlling bladder storage and emptying, thereby impairing voiding function.

Prolonged pelvic organ prolapse—where the vagina or bladder protrudes outward—can cause bladder outlet obstruction similar to benign prostatic hyperplasia in men, leading to bladder dysfunction.

When bladder function is impaired without structural abnormalities, medications that promote bladder contraction or relax the bladder outlet are essential to minimize residual urine. When structural abnormalities are identified, addressing these takes priority.

Recent research has increasingly examined intractable conditions through the lens of the microbiome. Studies indicate that postmenopausal women experience reduced estrogen and progesterone levels, causing vaginal atrophy and changes in vaginal bacterial flora that affect the adjacent bladder environment. The European Association of Urology now recommends topical estrogen therapy for postmenopausal women diagnosed with recurrent cystitis.

Not all recurrent cystitis cases require antibiotics. Treatment strategies differ based on whether the condition is bacterial. When lower urinary tract symptoms such as frequent urination, painful urination, and urgency recur alongside pyuria—pus in the urine—urine culture tests are necessary to confirm whether pathogens are present and whether they are resistant strains.

When pathogens are cultured, appropriate antibiotics are selected based on sensitivity test results. When symptoms persist without identified pathogens, non-antibiotic treatments should be considered, with prevention as the core approach.

Traditionally, the immunomodulator Uro-Vaxom has been commonly used. Recently, methenamine hippurate—which acidifies urine—and hyaluronic acid and chondroitin preparations that strengthen bladder mucosa are frequently prescribed.

Methenamine hippurate is strongly recommended as a first-line preventive agent by both American and European urology associations and became available in South Korea in 2024.

Some studies have reported that D-mannose, a component found in cranberries, may help reduce cystitis recurrence, though results remain inconsistent.

Prophylactic antibiotics are considered only when non-antibiotic therapies fail. They are used cautiously and only for recurrent cystitis clearly linked to sexual intercourse or when patients can manage their own medication.

Middle-aged and older women tend to dismiss symptoms of frequent urination and painful voiding. However, leaving such symptoms untreated without identifying the exact cause can lead to chronic bladder pain.

Unlike simple cystitis, recurrent cystitis can be associated with considerably complex conditions, making urological consultation essential. Hospitals can identify causes through basic tests and significantly reduce recurrence rates with appropriate treatment.

Those experiencing discomfort from recurring cystitis are encouraged to overcome any reluctance and consult a urologist.