How to test for rheumatic fever?

Written by Liu Li Ning
Rheumatology
Updated on September 04, 2024
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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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Written by Liu Li Ning
Rheumatology
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Does rheumatic fever cause an increase in body temperature?

Rheumatic fever may lead to increased body temperature; fever is one of the common clinical manifestations of rheumatic fever, primarily associated with streptococcal infections. Other common symptoms of rheumatic fever include joint pain or arthritis, erythema marginatum, subcutaneous nodules, chorea, and carditis. During the acute phase, penicillin antibiotics can be used to treat the infection. At the same time, it is important to rest adequately and consume high-quality protein foods to ensure sufficient nutrition and calories. Foods rich in high-quality protein such as lean meat, milk, and eggs should be consumed appropriately. In addition, symptomatic treatment is also crucial. For arthritis, non-steroidal anti-inflammatory drugs can be used, and corticosteroids are necessary for treating carditis.

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Written by Yang Ya Meng
Rheumatology
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The difference between rheumatic fever and rheumatoid arthritis

Patients with rheumatoid arthritis primarily exhibit symmetrical swelling and pain in the small joints of both hands as the main clinical manifestations, with rarely any involvement of visceral organs. Blood tests can show elevated inflammatory markers, erythrocyte sedimentation rate (ESR), C-reactive protein, as well as positive rheumatoid factor, anti-CCP antibodies, and AK antibodies. These indicators can be considered as diagnostic for rheumatoid arthritis. Patients with rheumatic fever, in addition to joint pain, often have cardiac complications, such as mitral stenosis or chorea-like symptoms. The main difference between rheumatic fever and internal rheumatism is that patients with rheumatic fever often have cardiac complications.

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Written by Yang Ya Meng
Rheumatology
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Can you soak your feet if you have rheumatic fever?

Patients with rheumatic fever can relieve some joint pain by soaking their feet, but this does not fundamentally solve the problem. Rheumatic fever is often caused by streptococcal infection, which leads to diseases such as arthritis. Therefore, antibiotics should be used at the source to eliminate streptococcal infection and hence prevent the recurrence of rheumatism. Additionally, we can use anti-inflammatory and analgesic drugs to control joint pain. Commonly used anti-inflammatory analgesics include non-steroidal pain relievers, such as diclofenac sodium sustained-release tablets. If there is inflammation in the heart due to rheumatic fever, corticosteroid treatment should be considered. (Medication should be used under the guidance of a doctor.)

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Written by Yang Ya Meng
Rheumatology
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Is rheumatism hot compress useful?

Hot compresses for rheumatic diseases can alleviate joint pain by increasing the local skin temperature, and have a certain effect in relieving joint swelling and pain. However, they cannot fundamentally solve the problem. Rheumatic diseases still require chronic oral medication treatment. The commonly used medications for treating rheumatic diseases fall into three main categories. The first category consists of drugs that control pain symptoms, which we call anti-inflammatory analgesics, commonly including medications like celecoxib. Additionally, to control the progression of rheumatism, it is also necessary to use some immunosuppressants, with the most common being methotrexate and leflunomide. If the above methods are not effective, we may consider treatment with biologics. (Medication should be administered under the guidance of a doctor.)

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Written by Yang Ya Meng
Rheumatology
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Can people with rheumatic fever eat fish?

Patients with rheumatic fever can eat freshwater fish, but should try to eat less fish without scales and sea fish. For patients with rheumatic fever, the general dietary rule is to eat a light diet and reduce consumption of spicy, warming, oily, and rich foods. Foods such as celery, coriander, leeks, seaweed, mushrooms, beef, mutton, dog meat, and longan should be minimized. Seafood, such as shrimp and crab, which are high in protein, should also be consumed less. In addition to dietary considerations, patients with rheumatic fever should also avoid getting cold and pay attention to rest.