Chronic Prostatitis With Pelvic Pain Syndrome, Curable ?

About 5 yrs. back I suffered with burning micturition & increased frequency of urine. Antibiotics gave me relief but recurrence was common. Once problem was severe,(R.B.C. & pus cells were present in urine in high number) for which I consulted an Urologist of medical college who performed cystoscopy & took biopsy. High antibiotics were given, which took some time in controlling infection. All reports were normal. But after a couple of days problem of perineum pain started which increased in due course of time. Later I consulted one professor of same Govt Medical College, who again performed cystoscopy & prescribed drugs. No biopsy was taken this time & again all reports were normal. I took T. Alfusin & bladder relaxant for long time & antibiotics frequently. Prostate was of normal size throughout. Now my problem is that instead of urge to pass urine, some sensation of fullness & pain starts in the perineum which increases. After passing urine pain is relieved. Mostly it is difficult to pass urine in standing position & I have to sit & wait. Frequency of urine is increased.Last C&S of urine after prostatic massage was positive for E.coli. I am suffering with chronic Prostatitis with pelvic pain syndrome. Not taking any drug for it for last 10 months. Is it curable or not ?