There are many symptoms of prostate enlargement, including symptoms in urination, symptoms accompanying urination, and possibly hematuria. Painful urination is often due to prostate enlargement causing dysuria, where the patient is not able to urinate well and residual urine is produced in the bladder. The normal situation of urination, everyone into the toilet to go after urination is a brain to the bladder of urine are finished, no one said that there is a little bit of urine in the bladder, half of the urine back, there should be no such situation. Prostatic hyperplasia, obstruction may lead to patients with residual urine, that is, want to urinate, not finished, there are remaining urine in the bladder, the medical term residual urine. One of the consequences of residual urine is infection. Infection will lead to pain, often when the patient feels painful to urinate, that is, prostate enlargement leads to residual urine, residual urine leads to infection, causing pain. In addition to infection, residual urine can also harbor bladder stones, which can sometimes act as a piston during urination, blocking the urethra and causing interruption of urination, which can also cause painful urination.