Hemorrhoids appear sudden pain, there are two main reasons: first, it may be thrombosis of blood vessels within the hemorrhoids, called thrombosed external hemorrhoids. Clinical thrombosed external hemorrhoids, surgical treatment is recommended, if some thrombosed external hemorrhoids are small, the symptoms are relatively light, can also be treated with medication, the drug can be used orally Diosmin tablets, external use of Ma Yinglong hemorrhoid cream and hemorrhoid suppositories, with warm water sitz baths, a week or so, the symptoms can be relieved. Second, there may be inflammatory external hemorrhoids, inflammatory external hemorrhoids is hemorrhoidal nucleus localized infection caused by the clinical recommendations for conservative treatment, the use of local anti-inflammatory drugs can be controlled. There is also a situation to note, many patients with pain in the perianal abscess, will be mistaken for hemorrhoids attack. Perianal pain, it is recommended that patients go to the hospital in a timely manner, to clarify the cause of pain, and then take appropriate treatment measures.