Varicose veins occur in the anal area and are actually the cause of the formation of hemorrhoids. The main external manifestation is the formation of a venous mass or thrombus around the anus, which may appear as a lump or abscess. It also causes a feeling of swelling and pain around the anus, and in some cases, itching. If the varicose veins are located above the dentate line of the anus, they will form large hemorrhoid nuclei, and as the disease develops the nuclei become edematous and will constantly irritate the surrounding mucous membrane, causing pain and blood in the stool, and in later stages the nuclei will prolapse from the anus and cause bleeding in the form of jets. In addition to these symptoms, varicose veins in the anus can also have a serious impact on bowel movements, causing patients to have difficulty defecating and causing significant distension and pain in the small abdomen.