Hemorrhoids are mainly caused by the tortuous expansion of the veins at the lower end of the rectal anal canal. Hemorrhoids are divided into internal hemorrhoids, external hemorrhoids and mixed hemorrhoids. With the tooth line as the boundary, those above the tooth line are internal hemorrhoids, and those below the tooth line are external hemorrhoids. If there are hemorrhoids both above and below the tooth line, they are called mixed hemorrhoids. The main symptoms of internal hemorrhoids are prolapse of tumor after defecation and blood in stool. It is mainly because there is prolapse of tumor in the anus after defecation, which can be returned by oneself or by hand. At the same time, it is accompanied by blood in stool. The color of blood is often blood, which is not mixed with stool, and painless. The main symptom of external hemorrhoids is anal discomfort after defecation, which is mainly the complications of hemorrhoids, namely, dampness, itching and discomfort. There is also a special type of external hemorrhoids, called thrombotic external hemorrhoids, whose main symptom is a very hard knot in the anus, surface edema, pain. Therefore, if hemorrhoids are considered, it is recommended to go to a special hospital for treatment after a clear diagnosis.
