Hemorrhoids (HEM-uh-roids), also called piles, are swollen veins in your anus and lower rectum, similar to varicose veins. Hemorrhoids can develop inside the rectum (internal hemorrhoids) or under the skin around the anus (external hemorrhoids). Nearly three out of four adults will have hemorrhoids from time to time in their life. Common Symptoms are: Itching or irritation in your anal region, Pain or discomfort, Swelling around your anus, Bleeding.