Hemorrhoids can be said to be the most common anal disease, divided into internal hemorrhoids and external hemorrhoids. Internal hemorrhoids can be divided into four stages, while external hemorrhoids are generally not divided into stages, but into four common categories. The common external hemorrhoids are thrombotic external hemorrhoids, connective tissue external hemorrhoids, inflammatory external hemorrhoids and varicose external hemorrhoids. Internal hemorrhoids can be divided into first, second, third and fourth degree hemorrhoids. The first degree hemorrhoids occasionally have bloody stool and no prolapse symptoms; Second degree internal hemorrhoids have severe symptoms of bloody stool and occasional prolapse; Third degree internal hemorrhoids almost have no symptoms of bloody stool, and the prolapsed tumor cannot be returned to the anus, so it needs hand assistance; The fourth degree internal hemorrhoids often do not have the symptoms of blood in the stool. When defecating, the internal hemorrhoids and hemorrhoids are out of the anus, and cannot be returned to the anus, resulting in inflammation, edema, and thrombosis.
