Sore throat after drug allergy may be allergic pharyngitis, patients can be treated through the treatment of the cause, medication and other ways of treatment. 1. Causal treatment: patients with allergies caused by the use of drugs and sore throat, need to stop or change drugs under the guidance of the doctor, to prevent the disease from aggravating the cause of respiratory difficulties. 2. Drug treatment: patients can gargle compound borax solution, furacilin solution and other drugs to keep the throat clean and moist. You can also use antihistamines such as loratadine to improve throat edema and relieve the symptoms of sore throat. Patients may also choose to use glucocorticoid medications such as budesonide suspension nebulized to relieve symptoms such as swelling and pain in the mucous membranes of the pharynx. All of the above medications should be used under medical supervision. Patients are advised to take a light diet and not to consume spicy and stimulating food recently. It is recommended that the patient consult a doctor in time to improve the relevant examination and standardize the treatment.