Summary of case history,　The patient had a history of diabetes. One week ago, a subcutaneous hard lump appeared after skin bruising on the left lower abdomen. After one week of treatment with cephalosporin, the lump did not dissipate and the symptoms remained the same.,TCM diagnosis,　External carbuncle, heat poison accumulation syndrome,Western medicine diagnosis,　Superficial abscess of the skin,Therapeutic methods,　To clear heat and detoxify, promote blood and detumescence, prescription to modified Xianfang Huomingyin 3 agents, take internally. When frying, add cooking wine with frying, increase the power of blood stasis, aid to the disease, dissipate the mass.,Clinical outcomes,　After 3 doses of medication, the local area of red and swollen skin decreased obviously. After 6 doses of medication, the local skin of the carbuncle turned from red to dark, and the lump was reduced, higher than the surrounding skin, and the boundary was clear. At the same time, because the patient's tongue coating turned white and thick, considering the wet and cloudy, grass cardamom and areca nut were added in the front basis. After 9 doses of medication, the local skin turned from dark to red again, and the lumps higher than the skin shrank and became flat with the surrounding skin, and the pain disappeared. After 12 doses of medicine, the local mass disappeared, and the skin changed from red to normal skin color, leaving pigment.