The appearance of wanting to urinate, but not urinating, is considered to be a urinary tract infection. The patient has strong symptoms of frequent urination, urgency, and a persistent desire to urinate, but not much urine is discharged, due to the stimulation of inflammation, which leads to the patient to have the feeling of urination, and in fact there is not much volume of urine in the bladder. There is also the possibility of acute urinary retention, in which a large amount of urine is accumulated in the bladder, but cannot be eliminated on its own, most commonly seen in older men. This is because many older men have prostate enlargement, which squeezes the urethra and makes it thinner. After drinking alcohol or exertion and other triggers, the swelling of the prostate gland may be aggravated, resulting in acute urinary retention. This part of the patient needs to be indwelling catheterization to export the excessive residual urine in the bladder.