Hello, Frequent urination is an indication of a possible infection somewhere in the urinary tract. Other symptoms that also point towards the same direction are: -Less quantity of urine passed each time -Burning sensation while passing urine -Chills (not always) -Itching around the genitalia -Fever (not always) -A general sense of poor health -Dehydration symptoms (not always) and a few others. From your query, I understand that you have had two recent episodes of cystitis, which indicates a recurrent infection or inflammation. Recurrent infection or inflammation is almost always due to some underlying cause. Unless this cause is found and addressed, the infection/inflammation shall keep recurring. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Ivan R. Rommstein, General Surgeon