Healthcare News
Rheumatoid arthritis (RA) is an autoimmune disease that targets joints and can have system-wide effects. Up to 40% of people with RA will eventually develop rheumatoid nodules, which are firm, usually non-painful, subcutaneous (under the skin) bumps that tend to appear on fingers and knuckles, elbows, knees, and forearms.
Source: Verywell health
