Patients with rheumatism often experience symptoms of upper respiratory tract infections in the early stages of the disease, such as fever and sore throat. Additionally, patients with rheumatism commonly exhibit migratory joint pain, primarily characterized by acute onset of redness, swelling, heat, pain, and limited mobility in the joints, but these can improve on their own. Patients with rheumatic fever often also suffer from carditis, which can include valvulitis, myocarditis, and pericarditis, with damage to the valves being the most common. Rheumatic fever may also present with ring-shaped erythema on the skin or subcutaneous nodules, and it can include chorea. The most common treatment for rheumatic fever is the intramuscular injection of penicillin. (Specific medication use should be carried out under the guidance of a doctor.)