Hemorrhoids are swollen veins in the lower part of the rectum and anus. They can cause discomfort, itching, and bleeding during bowel movements. Hemorrhoids can be either internal, located inside the rectum, or external, found under the skin around the anus. They are often caused by factors like straining during bowel movements, pregnancy, or sitting for long periods. Treatment for hemorrhoids usually includes lifestyle changes, such as increasing fiber intake and drinking more water. Over-the-counter creams and ointments can help relieve symptoms. In more severe cases, medical procedures may be necessary to remove or reduce the hemorrhoids.