Pilot study to determine feasibility for treating patients with two chronic inflammatory conditions of the urinary bladder: chronic interstitial cystitis and recurrent urinary tract infections using a standardized hyperbaric oxygen treatment plan. Presently there are no good treatments for these conditions and hyperbaric oxygen may be a safe and readily accessible therapy as it has proven successful an another type of chronic inflammatory condition of the urinary bladder known as "radiation cystitis". The study will determine if patients will consider this an acceptable treatment for their conditions and that it is well tolerated.