The presence of swelling around the anus, usually due to external hemorrhoids, is often accompanied by this cramping pain. Because external hemorrhoids, which occur in the anal skin and are partially innervated by the pubic nerves, can cause this pain if they are edematous. In the early stages, herbal sitz baths can be used, as can proprietary Chinese medicines. The marketed fumigant of thorax, and Jin Xuan hemorrhoid fumigant can play a very good effect to reduce swelling and pain, you can use this Chinese medicine or proprietary Chinese medicine sit bath 15-20 minutes a day, adhere to, adhere to a week or so, can play a very good effect. In addition, after fumigation can be applied externally hemorrhoid cream, two drugs at the same time the effect is still good, if the effect is not obvious, you need to carry out surgical treatment to remove this edema (external hemorrhoids).