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High levels of rheumatoid factor (in general, above 20 IU/mL, 1:40, or over the 95th percentile; there is some variation among labs) occur in rheumatoid arthritis (present in 80%) and Sjögren's syndrome (present in 50-70% of primary forms of disease). [11] The higher the level of RF the greater the probability of destructive articular disease.
These might include: rheumatoid factor, antinuclear factor (ANF), extractable nuclear antigen, and specific antibodies. [65] Rheumatoid arthritis patients often have high erythrocyte sedimentation rate (ESR, also known as sed rate) or C-reactive protein (CRP) levels, which indicates the presence of an inflammatory process in the body.
The typical rheumatoid nodule may be a few millimetres to a few centimetres in diameter and is usually found over bony prominences, such as the elbow, the heel, the knuckles, or other areas that sustain repeated mechanical stress. Nodules are associated with a positive RF (rheumatoid factor) titer, ACPA, and severe erosive arthritis. Rarely ...
Rheumatism [2] /ˈruməˌtɪzəm/ or rheumatic disorders are conditions causing chronic, often intermittent pain affecting the joints or connective tissue. [3] Rheumatism does not designate any specific disorder, but covers at least 200 different conditions, including arthritis and "non-articular rheumatism", also known as "regional pain syndrome" or "soft tissue rheumatism".
The term was originally introduced to indicate a drug that reduces evidence of processes thought to underlie the disease, such as a raised erythrocyte sedimentation rate, reduced haemoglobin level, raised rheumatoid factor level, and more recently, a raised C-reactive protein level.
Gout causes painful swelling, typically only impacting one joint. Its symptoms can come and go. Periods when gout symptoms are more severe are called gout flares or gout attacks.
The most common type of childhood arthritis, juvenile idiopathic arthritis [JIA] (previously known as juvenile rheumatoid arthritis (JRA) or juvenile chronic arthritis (JCA)) [11] can be divided into six main forms. The classification is based upon symptoms, number of joints involved and the presence of certain antibodies in the blood.
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