When your immune system turns inward, joints become the battlefield
In short: Rheumatoid arthritis is not a simple case of wear and tear. It is an autoimmune malfunction where the body's defense system misidentifies healthy tissue as a threat. This internal betrayal triggers chronic inflammation that can reshape the skeletal system and affect vital organs.
Unlike osteoarthritis, which results from physical wear and tear, rheumatoid arthritis (RA) is an inflammatory autoimmune disorder. It occurs when the immune system becomes deregulated and sends antibodies to attack the synovium—the lining of the joint capsule responsible for producing lubricating fluid. This malfunction leads to persistent inflammation, causing pain, swelling, warmth, and tenderness in the joints.
While RA commonly affects small joints in the fingers and wrists, it is characterized by symmetrical involvement, often appearing on both sides of the body simultaneously. The disease can progress from mild symptoms that come and go to severe conditions that limit daily activities, such as tying shoes or grasping objects. In some cases, chronic inflammation leads to permanent joint deformities, decreased movement, and the formation of rheumatoid nodules—lumps that can appear anywhere on the body.
The impact of RA extends beyond the joints; it is a systemic disease capable of damaging the heart, lungs, eyes, skin, and blood vessels. While researchers believe heredity may play a role, the exact cause remains unknown. Early diagnosis is critical because modern treatments, including medications like methotrexate to balance the immune system and steroids to calm flare-ups, can significantly improve outcomes and help patients regain functionality.
In children aged 16 or younger, a related condition called juvenile idiopathic arthritis (JIA) may present with symptoms that fluctuate or resolve completely. However, for adults, RA is typically a chronic, lifelong condition most frequently occurring in women between the ages of 30 and 50.
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Sources
- Summary by Intellect · source: Rheumatoid Arthritis Pathophysiology (signs and symptoms)
- Also: Rheumatoid arthritis - Symptoms and causes
- Also: Rheumatoid Arthritis
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