Recurrent urinary tract infection has a working definition: two or more infections within six months, or three or more within a year. Within that, two very different things can be happening. A relapse is the same organism surviving a course of antibiotics that was too short, underdosed, or aimed at bacteria that turn out to be resistant. A reinfection is a new episode altogether, often from the same source but a fresh event — and it is the more common of the two.
Telling them apart matters because it changes the plan. Repeating the same short antibiotic course for a relapse just buys a few symptom-free weeks before it returns; treating frequent reinfection the same way as a one-off infection misses the point of asking why it keeps happening. A urine culture, rather than a symptom description, identifies which bacteria are involved and which antibiotic will actually clear it, and it also rules out conditions that mimic a UTI — bladder irritation, an overactive pelvic floor, or incomplete bladder emptying linked to a mild prolapse.
Contributing factors worth raising at a visit include the drop in vaginal and urethral tissue resilience after menopause, sexual activity, and any difficulty fully emptying the bladder. None of these are things to self-diagnose from a symptom list, because the same combination of urgency and discomfort can come from more than one cause.
At The Fit Clinic, 8F EM Tower EMSPHERE, Sukhumvit, Bangkok, an assessment for recurrent UTIs includes a proper culture and a check for the pelvic floor and bladder-emptying contributors that a course of antibiotics alone cannot fix. If you are treating more than two or three episodes a year, or symptoms return within days of finishing treatment, book a consultation via Line @THEFITBKK.