Rheumatoid arthritis is a chronic autoimmune disorder that primarily affects the joints, but can also affect other organs in the body.

The immune system mistakenly attacks the synovial lining of the joints, causing inflammation and damage to the joint tissue. This results in pain, stiffness, and reduced range of motion in the affected joints.

The exact cause of rheumatoid arthritis is not fully understood, but it is believed to be a combination of genetic and environmental factors.

Symptoms of rheumatoid arthritis can vary in severity and location on the body, but commonly affect the joints of the hands, feet, and wrists. Other symptoms can include fatigue, fever, and weight loss.

Treatment for rheumatoid arthritis may involve medications to manage pain and inflammation, as well as disease-modifying antirheumatic drugs (DMARDs) to slow disease progression.

In some cases, surgery may be recommended to repair or replace damaged joints. With proper management, individuals with rheumatoid arthritis can maintain a good quality of life and continue to engage in daily activities.