Your ankles ache and your fingers are stiff and swollen. Could it be rheumatoid arthritis (RA)? Blood tests may provide a clue.
The diagnosis of arthritis is made largely through a medical history and physical exam; certain lab tests can help your doctor confirm a suspected diagnosis. With osteoarthritis, blood test results are typically normal, but for RA and other forms of arthritis, blood tests can be key to diagnosing and monitoring the disease. Here are some of the more common blood tests and...
Rheumatoid nodules are often found at pressure points, including:
The nodules can also form on the vocal cords, causing hoarseness. Rheumatoid nodules may appear in the lungs, heart, and other internal organs.
Many people with RA have no pain or symptoms with the nodules. But some patients find the nodules painful. Sometimes rheumatoid nodules interfere with daily activities, put pressure on nerves, and limit movement. Rheumatoid nodules in areas such as the heart and lungs may affect organ function.
What are the causes of rheumatoid nodules?
Rheumatoid nodules usually occur in patients with severe RA. Nearly all RA patients with nodules test positive for rheumatoid factor. Studies show that when RA is linked with a positive rheumatoid factor test, it may indicate more aggressive disease.
Other factors may increase the chance of RA nodules. One study found that cigarette smoking increases nodules in patients with RA. Methotrexate, a commonly used RA drug, has also been linked to increased development of rheumatoid nodules.
Are there treatments for rheumatoid nodules?
Sometimes disease-modifying antirheumatic drugs (DMARDs) can reduce the size of rheumatoid nodules. But patients who take methotrexate may develop an increase in size and number of nodules. If nodules are thought to be a result of methotrexate treatment, a change in medication regimen may help; however, this decision must be carefully made on an individual basis.
Injections of glucocorticoids (steroids) may help shrink nodules. Sometimes surgery is necessary if rheumatoid nodules become infected or cause severe symptoms.
Seeing your doctor regularly is important to avoid serious problems with rheumatoid nodules.