1.What are hemorrhoids? People often say “nine out of ten hemorrhoids”, although it is an exaggeration, but it also shows the high incidence of hemorrhoids. What are hemorrhoids? The word “hemorrhoid” evolved from the word “standoff” and has the meaning of a higher projection, so we can call the soft swelling that rises inside and outside the anus a hemorrhoid, which is essentially a venous mass formed by a tortuous expansion of a vein. The inventor of An’s therapy, my mentor Professor An Ahh, confirmed through extensive pathological observations that highly tortuous and dilated veins are visible within the hemorrhoid tissue, along with tissue edema, inflammatory cell infiltration, and intravascular thrombosis. Hemorrhoids are divided into internal, external and mixed hemorrhoids by the dentate line (the line dividing the skin of the anal canal and the mucous membrane of the rectum, about 3-100 px from the anal verge); hemorrhoids above the dentate line are called internal hemorrhoids, below the dentate line are called external hemorrhoids, and hemorrhoids with nuclei spanning above and below the dentate line are called mixed hemorrhoids. The human body is in an upright position, the anus is located at the lowest end of the digestive tract and has the greatest resistance to venous reflux, plus the venous reflux needs to pass through the rich muscle tissue around the anus, and there is no venous valve to prevent venous reflux in the anal veins, so the anorectal local blood reflux becomes more and more difficult, which can be described as “a heavy task but a long way to go “This is the internal cause of human hemorrhoids; long-term constipation, prolonged squatting and sitting, weight-bearing and long-distance travel squeeze the local blood vessels in the anus, intensifying venous reflux obstruction, and over-eating spicy food leading to anorectal congestion and edema can also lead to the occurrence of hemorrhoids, which are the external causes of hemorrhoids. 2.What are the symptoms of hemorrhoids? What are the diseases that need to be differentiated from? The symptoms of hemorrhoids include blood in the stool, prolapse of swelling in the anus, itching and dampness of the anus, etc. If the nucleus of the hemorrhoid is edematous and forms a thrombus, it can be accompanied by severe pain. Hemorrhoids blood in the stool is usually fresh blood, dripping down, if more blood can be sprayed, the nucleus of the hemorrhoid prolapsed outside the anus can be retracted in the anus at first, after aggravation, you need to hand-hold to return to the anus; if the hand-hold can not return to the anus, it is called embedded hemorrhoids, which can lead to hemorrhoid edema, thrombosis, necrosis of the nucleus of the hemorrhoid with severe pain, and must be operated in time; anal damp itching is caused by the stimulation of secretions after the nucleus of the hemorrhoid prolapsed.