Hemorrhoids are a uniquely human disease, which is not found in the animal kingdom. Many years ago, our human ancestors chose to walk upright, so that the upper limbs can be liberated, greatly expanding the brain capacity, but the side effect is that, because humans walk upright, the rectal veins did not evolve to keep up, and did not form a venous valve; unlike the veins of the limbs have a venous valve, the venous valve closes when the blood returns, which can reduce blood reflux; and the rectal veins do not have this venous valve, the blood returns to the flow of gravity, but also reflux, causing blood stagnation, so that the veins expand to form varicose veins. The blood reflux is influenced by gravity, which causes the blood to stagnate, causing the veins to dilate and form varicose veins. This results in the formation of hemorrhoids. Animals, on the other hand, are on all fours and do not get hemorrhoids because they are under less gravitational pressure. There are three categories of hemorrhoids depending on the site of occurrence The anus is a very delicate, nerve-rich, special organ. And hemorrhoids, depending on the site of occurrence, are divided into internal, external, and mixed hemorrhoids. There is a jagged visible line called the dentate line where the skin of the anal canal meets the rectal mucosa. The varicose veins above the dentate line are internal hemorrhoids, and those below the dentate line are external hemorrhoids; those with both internal and external hemorrhoids are mixed hemorrhoids, where the internal hemorrhoids fuse with the corresponding external hemorrhoids through the venous plexus, i.e. the anastomosis of the upper and lower venous plexus. It is not a common belief that outside the anus is external hemorrhoids and inside the anus is internal hemorrhoids. Which of the three types of hemorrhoids is more dangerous? It is not simply which type of hemorrhoid is more dangerous. In fact, each type of hemorrhoid can be very serious when it reaches its final stage of development. For example, internal hemorrhoids, when bleeding is severe, can lead to hemorrhagic anemia, which can be serious enough to cause fainting and shock. I have seen cases of internal hemorrhoids bleeding leading to shock. External hemorrhoids that have thrombosis or inflammatory edema, mainly painful, should be seen promptly. Otherwise, the condition can worsen and cause tissue necrosis. Mixed hemorrhoids can also be extremely dangerous if not operated on in time, causing infection, necrosis, and even systemic infection and critical illness. The hemorrhoids can be divided according to the severity ◆ The first stage, the blood is mainly coming out, not prolapsing, slightly bulging. In the second stage, the nucleus of the hemorrhoid is prolapsed, but can be returned by itself, the size of peanuts or walnuts. In the third stage, the hemorrhoid can’t be returned and needs to be sent back by hand. The hemorrhoid has a single nucleus that comes out, and also a ring-like one. The fourth stage, mixed hemorrhoids embedded, hemorrhoids prolapsed can not be returned, appear thrombosis and inflammatory edema, seriously affect life. How to distinguish hemorrhoids from bowel cancer? Because it is difficult to talk about it, many people will not go to the hospital after suffering from hemorrhoids. But it is this embarrassment that can easily lead to serious consequences. I once had a patient who delayed treatment for a long time because he was too ashamed to talk about it, and was later found to have advanced low-grade rectal cancer. Because of the early bleeding, it has been considered as hemorrhoid bleeding, which hides the symptoms of rectal cancer. If we can find out it is rectal cancer early and treat it timely, we can minimize the damage to our body. If it is hemorrhoids, the blood in the stool is bright red in color, mostly related to eating spicy food before, and there is no habitual change in stool (it used to be once a day now it is still once a day). If it is bowel cancer, the blood in stool is dark red in color, and there is no large amount of spicy and stimulating food consumed in the diet before; the stool habit will change, the frequency will increase, the weight will decrease, the diet will decrease, and the sleep will not be good …… If you play cell phone, computer, read newspaper, etc. while defecating, all these will cause the will power to be distracted and unable to focus on defecation, making the defecation time longer If you miss the best time to defecate and the urge to defecate disappears, there will be no discharge of the stool, which will be left until the next defecation, the water in the stool will be reabsorbed by the intestines, making the stool dry and constipated; and long time defecation, abdominal pressure increases, venous reflux is blocked, local congestion and edema in the anus, easily causing varicose veins and the formation of hemorrhoids. So we advocate that the toilet defecation time should not exceed 5 minutes.