Tetanus-induced hives are a symptom of allergy to tetanus antitoxin injections, which usually clears up within 24 hours, although some patients may need treatment to clear up. Since tetanus shot contains tetanus antitoxin, if the patient is allergic to this antitoxin, he or she will have hives all over the body, abdominal pain, diarrhea and other symptoms. Most patients with hives will get better on their own within 24 hours, and the localized itching and redness of the skin rash will subside on their own. For patients who can’t get rid of it on their own, they can take oral medication such as diclofenac tadine tablets, cetirizine tablets and other medications, or use hormonal medications such as dexamethasone or prednisone to treat the condition. During the treatment period, other allergens should be isolated. After active treatment, the symptoms can be gradually relieved in 3 to 5 days. After active treatment, the symptoms can be gradually relieved in 3 to 5 days. When allergy symptoms occur, it is recommended that the patient consult a doctor in time, strictly cooperate with the doctor’s treatment, and do not use drugs indiscriminately.