Rheumatoid nodules are firm lumps located under the skin. The nodules grow close to the affected joints. Rheumatoid nodules can be as large as a walnut or as small as a pea.
Twenty percent to 35% of adults with rheumatoid arthritis (RA) get rheumatoid nodules. Sometimes the nodules are movable. Or, they can be firmly connected to tendons or fascia under the skin.
Rheumatoid nodules are often found at pressure points, including:
The nodules can also...