Prevalence of Interstitial Cystitis in a Primary Care Setting

In this article, we report a study that assessed the prevalence of interstitial cystitis (IC) in a primary care office using symptom-based and improved diagnosis-based assessment modalities. Over the course of 1 year, all patients ≥18 years of age who presented for a primary care office visit were administered the Pelvic Pain and Urgency/Frequency (PUF) questionnaire. Patients with potential IC as indicated by PUF score were selected for further interview and, when appropriate, a Potassium Sensitivity Test (PST) or Anesthetic Bladder Challenge (ABC). Those given the PST were queried afterward regarding the tolerability of the test. Of 3883 patients initially surveyed, 13.1% (n ± 509) reported PUF scores suggestive of probable IC, including 17.5% (357 of 2043) of women and 8.3% (152 of 1840) of men. Overall, 4.3% (168 of 3883) of patients in this primary care population was diagnosed with IC on the basis of history, PUF score, patient interview, and results of the PST or ABC. The PST was found to be comparable to, and in most cases less painful than, several standard office-based procedures. IC is a prevalent disease in the general primary care population. The PUF questionnaire represents an easy-to-use approach for IC symptom screening, and the PST and the ABC are useful and relatively noninvasive adjuncts in the diagnosis of IC.