Prostatic hyperplasia is a common disease in middle-aged and elderly men. In foreign countries, the onset age is earlier, generally over 40 years old, while in domestic statistics, it is about 50 years old, of which about 10% have symptoms. In 1960, Beijing Hospital added 26 eunuchs left over from the Qing Dynasty to carry out an investigation. Their average age was 70 years old, and their testicles were removed when they were 16-17 years old. The result of the survey is that the prostate of 21 people can not be touched at all, three people are only 1, 5 to 2 cm, and the other two people are only the size of soybeans, which proves that after the removal of bilateral testicles in adolescence, the prostate remains in an undeveloped state.
So when people reach the age of 50 or so and enter the male menopause, the testicles begin to change, and the level of male hormones also fluctuates with the changes of the testicles, losing balance, making the prostate constantly stimulated and hyperplastic, which is the reason for prostatic hyperplasia.
If prostate hyperplasia develops around the urethra, the problem is not serious. If it protrudes to the bladder neck, serious symptoms will appear. Patients generally showed increased frequency of urination in the early stage, especially at night. It is often difficult to urinate again. Remaining urine can lead to congestion and edema in the bladder neck. Over time, the urine line is thin and bifurcated. Sometimes the urine does not form a line and drips out. It takes half a minute to one minute to urinate when going to the toilet. In the later stage, if the amount of residual urine is equal to the normal bladder capacity, when hearing the sound of running water or the reflex caused by other stimuli, such as getting cold, holding urine, and overwork, the urine will automatically overflow, resulting in obstruction and complete loss of automatic urination, which is called "urinary retention".