What are the symptoms of rheumatic fever?

Written by Yang Ya Meng
Rheumatology
Updated on September 14, 2024
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In the early stage of rheumatic fever, most patients show signs of infection, such as pharyngitis or tonsillitis. Patients with rheumatic fever often also experience fever, with body temperatures generally ranging from 38 to 40°C. Additionally, there may be migrating arthritis characterized by redness, swelling, warmth, pain, and limited mobility in the joints. Rheumatic fever patients may also suffer from cardiac valve lesions, primarily manifesting as valvulitis, myocarditis, or pericarditis, with damage to the valves being most common. Skin rashes, mainly presenting as ring-shaped erythema or subcutaneous nodules, can also occur. Some patients with rheumatic fever may experience chorea, which are among the primary symptoms of the condition.

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Written by Yang Ya Meng
Rheumatology
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Difference between Rheumatic Fever and Rheumatoid Arthritis

The key difference between rheumatic fever and rheumatoid arthritis primarily lies in the fact that patients with rheumatic fever, besides exhibiting symptoms such as joint pain, also develop cardiac and dermatological manifestations. Patients with rheumatic fever may experience mitral stenosis and symptoms like erythema on the skin. Moreover, the examination of antibodies in rheumatic fever patients mainly shows an elevation in anti-streptolysin O antibody. In contrast, patients with rheumatoid arthritis typically display elevated rheumatoid factor, anti-CCP antibodies, and anti-AKA antibodies, and they seldom have skin or cardiac manifestations. Therefore, to differentiate rheumatic fever from rheumatoid arthritis, one can test for anti-streptolysin O and rheumatoid factor, and further conduct an echocardiogram to determine any cardiac involvement.

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Written by Yang Ya Meng
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How to treat rheumatic fever?

Patients with rheumatic fever who develop a fever can first use non-steroidal anti-inflammatory drugs (NSAIDs) such as sustained-release diclofenac sodium tablets for symptomatic fever reduction. At the same time, it is also necessary to actively treat the primary disease of rheumatic fever. If the rheumatic fever is induced by a streptococcal infection, additional anti-infection treatment is also needed. Furthermore, as rheumatic fever is also an autoimmune disease, while using NSAIDs to reduce fever, it is also necessary to add some immunosuppressants, such as methotrexate or leflunomide, to control the condition. Only on the basis of controlling the condition can rheumatic fever potentially be completely cured. (The use of medications should be under the guidance of a doctor.)

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Written by Liu Li Ning
Rheumatology
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How to quickly relieve rheumatic fever pain?

Rheumatic fever pain can be treated with non-steroidal anti-inflammatory drugs (NSAIDs) for rapid pain relief. NSAIDs are the first-line medications for treating rheumatic fever pain. Commonly used ones include diclofenac sodium sustained-release capsules, etoricoxib, meloxicam, or etodolac. These medications may cause gastrointestinal discomfort, so they cannot be used by patients with active peptic ulcers. If there are contraindications to using NSAIDs, pain relief can be achieved with medications such as tramadol or Aconitum alkaloid tablets. If rheumatic fever is accompanied by carditis, treatment with corticosteroids is also necessary. Since the onset of rheumatic fever is related to streptococcal infections, the use of penicillin antibiotics for anti-infection treatment is also recommended.

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Written by Liu Li Ning
Rheumatology
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How to test for rheumatic fever?

Rheumatic fever is a systemic connective tissue disorder occurring one to four weeks after an infection by Group A Streptococcus, primarily affecting the heart and joints, and commonly infects children and adolescents. The usual clinical manifestations include carditis, polyarthritis, chorea, erythema marginatum, subcutaneous nodules, joint pain, and fever. Common laboratory tests for this disease include: 1. Complete blood count, often showing mild anemia and a slight increase in white blood cell count. 2. Elevated erythrocyte sedimentation rate. 3. Elevated C-reactive protein. 4. Antistreptolysin-O antibodies often greater than 500 units. 5. Positive throat swab culture. 6. Echocardiogram, which may show vegetations.

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Treatment of acute rheumatic fever

The treatment of rheumatic fever includes general treatment, where patients are advised to rest in bed. The second is the use of antibiotics, aimed at eliminating streptococcal infections to prevent recurrent attacks of rheumatic fever. The third is anti-rheumatic treatment, with the preferred choice being non-steroidal anti-inflammatory drugs, such as sustained-release diclofenac sodium tablets. If the patient's rheumatic fever affects the heart, corticosteroid treatment is also required. In addition, to assist in the reduction of corticosteroids, some immunosuppressants need to be added, such as methotrexate and leflunomide, which help control the condition. For the treatment of complications of rheumatic disease, such as concurrent lung infection, antibiotic treatment should also be considered. (The use of medication should be under the guidance of a professional doctor.)