Clinically, external hemorrhoids are a relatively common anorectal disease, usually growing below the dentate line. When they occur below the dentate line, they are called external hemorrhoids, and their main characteristics are pain and a foreign body sensation. External hemorrhoids are hemorrhoids that grow in the anal opening and can be examined without the use of instruments. If it occurs in the dentate line is called internal hemorrhoids, the main manifestation of bleeding, the two are very good to distinguish. External hemorrhoids are mainly caused by the enlargement of varicose veins in the anus or by repeated inflammation and enlargement of varicose external hemorrhoid plexus. External hemorrhoids are often covered by the skin, can be seen visually, can not be sent to the anus, not easy to bleed and other manifestations. Daily life should maintain good defecation habits, avoid prolonged sitting and squatting, such as long time squatting in the toilet to read books and play games. Keep bowel movement smooth, drink more water, and exercise properly to prevent constipation and diarrhea. If you have the above perianal discomfort symptoms, go to the hospital in time to avoid aggravation of the condition.