Difficulty in urination can be caused by prostatitis, prostate enlargement, urethral stones, tumors, etc. It can also be caused by functional factors such as nerve damage. The reason for the difficulty in urination is that you need to increase the abdominal pressure in order to urinate, and in severe cases, even if you increase the abdominal pressure, you can’t urinate out of the bladder, forming the symptom of urinary retention, and the cause of the difficulty in urination can be divided into obstruction and functionality. 1. Obstructive dysuria: seen in bladder neck lesions, posterior urethra and anterior urethra diseases, such as the bladder neck is blocked by stones, tumors, or by uterine fibroids, late pregnancy compression; prostate enlargement, prostate cancer, acute inflammation of the prostate gland compression of the urethra, or urethra stones, tumors and so on. 2. Functional urinary difficulty: it refers to nerve damage, bladder smooth muscle or sphincter lesions, mental factors, etc., which makes the urinary reflex, the process of bladder contraction impeded, resulting in urinary difficulty. Prostatitis can make the prostate gland enlarged, oppression of the urethra, resulting in difficulty in urination, but the difficulty in urination is not necessarily prostatitis, it may also be caused by other factors, it is recommended that the patient go to the regular hospital urology department, to clarify the cause of the disease, and then treatment.