Chlamydia Cystitis Hemorrhagic cystitis Kidney stones Malignancy, i.e., bladder cancer, prostatic cancer, or urethral cancer Prostatic enlargement, i.e., benign prostatic hyperplasia (male), prostatic cancer Prostatitis (male) Pyelonephritis Sexually transmitted disease Trichomoniasis Urethral stricture Urethritis Urinary schistosomiasis Urinary tract infection (UTI) caused by bacterial infection