What causes hemorrhoids to bleed?

Hemorrhoids also bleed when urinating because women urinate in a squatting position. Hemorrhoids bleeding is mostly pressure bleeding, and bleeding occurs when they are forced to urinate. However, in this case, internal hemorrhoids are usually shallow and close to the dentate line. Therefore, even if there is no defecation, as long as there is pressure, hemorrhoidal mucosa will bleed without damage. If the patient bleeds without understanding urination, accompanied by stool and falling feeling, it should be treated. Some hemorrhoids are more serious, such as erosion and ulcer on the surface of internal hemorrhoids, especially when there is bleeding and erosion in these three parts, as long as you squat, you will bleed, and severe hemorrhoids will even lead to anemia.