As a matter of fact, I do know a therapy for interstitial cystitis.
Stop using the artificial sweetener, aspartame. Aspartame (Equal,NutraSweet) is now in 9,000 products---the latest symptoms such as seizures and headaches and sudden death are coming from the new breath strips such as Listerine and sugar=-free gum. Wrigley is now using Aspartame in its regular Sugar gums such as doublemint.
In 1995, the FDA was forced to reveal, under the Freedom of Information Act, 92 symptoms caused by aspartame.
other Urogenital is No.27, difficulty with urination is No. 40. Change in urine volume is No. 46.
Stop using for 60 days, unfortunately medicine interracts with Aspartame see Dr. H.J. Roberts Aspartame Disease: An Ignored Epidemic (www.sunsentpress.com)