The anal opening manifests as a localized dermatome, which is a manifestation of connective tissue external hemorrhoids. Patients mostly have a history of acute thrombosed external hemorrhoids that remain after local treatment with atrophy of the hemorrhoid nucleus. The cause of hemorrhoids is related to unreasonable dietary habits. Patients have slowed bowel motility, inducing constipation leading to poor local blood circulation in the rectum and anal canal, forming varicose vein clusters and sinuses. Patients also experience perianal pain and in severe cases, blood in the stool, which is more frequent in young patients. Elderly patients with chronic obstructive pulmonary disease are also prone to the formation of hemorrhoids. You should pay attention to perianal hygiene, adjust your diet, and not overeat. Stay away from spicy foods and stimulating foods, and proper anal muscle exercise can also reduce the chances of occurrence, and if necessary, surgical treatment can be an option.