What should be paid attention to in the diet for rheumatic fever?

Written by Yang Ya Meng
Rheumatology
Updated on March 05, 2025
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For patients with rheumatism, the general dietary rule is to follow a light diet, reduce spicy and greasy foods, and avoid foods that are too warm and dry. Specifically, vegetables like celery, coriander, leeks, seaweed, and shiitake mushrooms should be reduced in consumption because they may cause photosensitivity and worsen rheumatism. At the same time, meats such as lamb, dog meat, and beef are considered too warming and nourishing, and may also trigger the worsening of rheumatism, so their consumption should also be minimized. Similarly, seafood like shrimp, crab, and sea cucumber, which are high in protein, might cause allergic reactions in patients with rheumatism, so their intake should be minimized as well.

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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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Written by Yang Ya Meng
Rheumatology
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Rheumatic fever clinical symptoms

The clinical manifestations of rheumatic fever primarily include: Some patients may experience low fever and rashes, and about half of the patients may exhibit symptoms such as morning stiffness. The joint pain associated with rheumatic fever often occurs more frequently in the large joints of the lower limbs and is asymmetrical, but it can also affect small joints and central axis joints. It commonly presents as non-migratory arthritis. Secondly, patients with rheumatic fever may experience cardiac involvement, with the most common being heart valve disease, particularly mitral valve stenosis. Additionally, patients with rheumatic fever may also suffer from kidney involvement, often presenting with symptoms such as hematuria and proteinuria, which are typical clinical symptoms of rheumatism.

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Written by Yang Ya Meng
Rheumatology
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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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Rheumatic fever anti-O titer generally how much?

Rheumatic fever anti-streptolysin O is generally above the upper limit of the normal range. Since each hospital uses different testing methods, there are differences. You need to determine based on the reference range of your local hospital laboratory what is normal and what exceeds the normal range. Anti-streptolysin O, also known as anti-O, is typically abnormal in cases of rheumatic fever. Rheumatic fever is a systemic inflammatory disease caused by an infection with Group A beta-hemolytic streptococcus. Clinically, it is primarily characterized by fever, erythema marginatum, joint pain, subcutaneous nodules, and it can also include carditis. Some patients may exhibit symptoms of chorea.

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Written by Yang Ya Meng
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The Difference Between Rheumatic Fever and Rheumatoid Arthritis

Most patients with rheumatoid arthritis primarily exhibit symptoms related to the joints. Mainly affected are the symmetrical small joints of both hands, including both wrists, both palmar digital joints, and both proximal interphalangeal joints. In addition, patients with rheumatoid arthritis often have elevated rheumatoid factor, anti-CCP antibodies, and AKA antibodies. During the acute phase of joint disease, there is a marked increase in inflammatory markers, which is a major manifestation of rheumatoid arthritis. Patients with rheumatic fever, aside from joint pain, may also have heart valve disorders, such as mitral stenosis, and some patients may develop skin lesions, commonly erythema nodosum. Most importantly, patients with rheumatic conditions often show a significant increase in anti-streptolysin O.