Anorectal hemorrhoid fistula, commonly known as hemorrhoids, is a common and frequently-occurring disease unique to humans. According to relevant census data, the incidence of anorectal diseases is 59.1%, and hemorrhoids account for 87.25% of all anorectal diseases, and internal hemorrhoids are the most common, accounting for 52.19% of all anorectal diseases. Both men and women can get the disease, the incidence rate of women is 67%, the incidence rate of men is 53.9%, and the incidence rate of women is high; it can be affected at any age, and it is more common in people aged 20-40. As the age increases, it gradually worsens, so there is a saying that "ten people have nine hemorrhoids".
There are many reasons for its disease. Sitting for a long time, standing for a long time, fatigue, etc. make the human body stay in a fixed position for a long time, thereby affecting blood circulation, causing slow blood flow in the pelvic cavity and congestion of abdominal internal organs, causing excessive hemorrhoidal vein filling, varicose, and uplift One of the important causes of hemorrhoids caused by the tension of the vein wall is decreased. If exercise is not enough, bowel movement slows down, stool descends slowly or due to habitual constipation, which compresses the veins, causes local congestion and blood return obstacles, causes hemorrhoids intravenous pressure to rise, the resistance of the vein wall decreases, and can also lead to the incidence of hemorrhoids Increase. According to the analysis of clinical observations and statistical census results, there are significant differences in the prevalence of patients with different occupations. The prevalence of clinical officials, car drivers, salespersons, and teachers is significantly higher.
The hemorrhoids located in the mucous membrane of the anus are called "internal hemorrhoids", and the hemorrhoids located near the inner side of the anal opening are called "external hemorrhoids". The symptoms of hemorrhoids are pain in the affected area and blood in the stool. In severe cases, the hemorrhoids will bulge out of the anus (prolapse) and then retract after defecation.
Most doctors in China currently believe that the causes of hemorrhoids are as follows:
1. Anatomical reasons: When a person is standing or sitting, the anus and rectum are located in the lower part. Due to the pressure of gravity and organs, the upward venous return is quite obstructed. Rectal veins and their branches lack venous valves, blood is not easy to return, and it is easy to stasis. Its blood vessels are arranged in a special way, passing through the muscle layer at different heights, and are easily compressed by fecal mass, which affects blood return. The veins pass through the loose tissues of the submucosa, lack of stent fixation around them, and are easy to expand and buckle.
2. Genetic relationship: The vein wall is congenital weak, the resistance is reduced, and it cannot tolerate the intravascular pressure, so it gradually expands.
3. Occupational relationship: People standing for a long time or sitting for a long time, long-term weight-bearing travel, affects venous return, slow blood flow in the pelvic cavity and congestion of abdominal organs, causing hemorrhoidal veins to overfill, decrease in vein wall tension, and blood vessels easily stasis and expand. In addition, due to lack of exercise, bowel movements are reduced, stool descending slowly, or habitual constipation can compress and stimulate the veins, causing local congestion and blood return obstacles, causing the intravenous pressure of hemorrhoids to increase and the resistance of the vein wall to decrease.
4. Local irritation and irregular diet: cold, heat, constipation, diarrhea, excessive drinking and eating more spicy foods in the anus can stimulate the anus and rectum, congest the hemorrhoid venous plexus, affect the return of venous blood, and cause the venous wall to resist Power drop.
5. Increased pressure in anal veins: Due to cirrhosis of the liver, liver congestion and insufficiency of cardiac function, the anal veins can be congested and the pressure increased, affecting the rectal venous blood return.
6. Increased intra-abdominal pressure: Intra-abdominal tumors, uterine tumors, ovarian tumors, enlarged prostate, pregnancy, overeating or squatting in the toilet, etc., can increase intra-abdominal pressure and hinder venous blood return.
7. Anal infection: The hemorrhoidal venous plexus is firstly inflamed due to acute and chronic infections, the elastic tissue of the vein wall is gradually fibrotic and weakened, and the resistance is insufficient, which causes the expansion of varicose. In addition, other causes gradually aggravate the varicose veins and form hemorrhoids .