Cystitis is inflammation of the bladder. The inflammation of the bladder is caused by a urinary tract infection or UTI, which is a bacterial infection. Cystitis more commonly affects women, however men can get it too. In either case, cystitis can affect a person’s quality of life and therefore requires treatment. Men who suffer from an enlarged prostate or benign prostatic hyperplasia (BPH), kidney stones, or a urethral stricture have an increased risk for cystitis.