Rheumatic fever may cause fever, usually low fever, but there are patients with more serious conditions may have a high fever, often accompanied by other symptoms such as fatigue, loss of appetite, excessive sweating, joint pain and so on. 1. Rheumatic fever can occur 1~5 weeks before the onset of pharyngitis, tonsillitis and other diseases, the patient will have fever, sore throat, cough and other symptoms, the patient needs to receive medication, such as the use of antibacterial drugs, including penicillin, macrolides azithromycin and so on. 2. If the condition of rheumatic fever is more serious, symptoms such as high fever, excessive sweating and panic will appear, suggesting that there may be carditis, including myocarditis, endocarditis and pericarditis. Treatment with medications to control streptococcal infections such as penicillin, and glucocorticoid medications such as prednisone, in adequate doses, is required. If rheumatic fever is suspected, you should go to the rheumatology and immunology department of the hospital as soon as possible to get a clear diagnosis and receive standardized treatment as prescribed by the doctor. The use of drugs must be under the guidance of a doctor.