Patients with fever and headache after interferon, considering that this is due to the side effects of interferon, it is recommended that patients can first observe their own symptoms, generally after the drug is metabolized in the body, these symptoms will gradually ease. Meanwhile, if the fever and headache are more serious, ibuprofen capsules can be given appropriately for relief. If the symptoms persist for a long time, you can also go to the hospital in time, under the guidance of the doctor to stop using the drug or change the drug, to relieve the discomfort.