Some external hemorrhoids do not require surgical treatment, as they come in three types. The first type, connective tissue external hemorrhoids, mainly presents as a mild foreign body sensation, generally painless, thus surgery is not necessary. Varicose vein type external hemorrhoids typically cause a feeling of heaviness and discomfort around the anus, and if symptoms are not severe, surgery is not required either. Only thrombosed external hemorrhoids, which usually involve severe pain, may resolve significantly on their own within two to three days if the lump is not large. Surgery is only needed for large, thrombosed external hemorrhoids.