A hard lump on the hemorrhoid is painful, it may be thrombosed external hemorrhoid, medication or surgery is recommended. The essence of hemorrhoids is the varicose veins around the anus, increased pressure in the blood vessels, blood stagnation, where blood clots can easily form and can form thrombosed external hemorrhoids, because of the presence of blood clots inside the hemorrhoids nucleus, so it is hard to the touch and accompanied by pain. Thrombosed external hemorrhoids are often caused by dry stool, dry, constipation, squatting and other triggers, the clinical manifestations of severe pain, anal itching, foreign body sensation and other symptoms. Thrombosed hemorrhoids can be treated conservatively with medication, which can be used as external musk hemorrhoidal cream, compound coriander acid ester suppositories and potassium permanganate solution sitz baths and so on. If the effect of the above medication is not good, it is recommended to timely use of surgical treatment, the surgical method is thrombosed hemorrhoid stripping surgery. The above medications are recommended to be used under the guidance of a professional doctor, and should not be abused blindly on their own.