An allergic reaction was occurred in a 17-years old girl who was undergoing local anesthesia before tonsillectomy. Ptosis was observed in right side of patient shortly after injection of lidocaine to right palate. Then the patient feel grasp and cough, accompanied by nausea and vomiting. The patient was placed in supine position. Dexamethasone and epinephrine was administrated intramuscularly, symptoms were relieved 10 minutes later.