What is a common symptom of rheumatoid arthritis?

Rheumatoid arthritis is an autoimmune condition characterized by chronic inflammation of the joints, leading to symptoms such as pain, stiffness, swelling, and, in severe cases, crippling deformities. These deformities occur due to prolonged inflammation and damage to the synovial tissue that lines the joints, which can result in joint deterioration and changes in the bone and cartilage structure.

As the disease progresses, the impact on the musculoskeletal system can lead to noticeable physical changes and deformities, such as misalignment of the fingers or toes and reduced ability to perform daily activities. Recognizing this aspect of rheumatoid arthritis is crucial for understanding the long-term implications of the disease on an individual's quality of life.

The other options, while they may suggest conditions that could be associated with other health issues or changes, do not accurately reflect the common symptoms or consequences of rheumatoid arthritis. Increased energy levels and improved joint flexibility are not typical symptoms, as the condition usually leads to fatigue and stiffness. Weight gain may occur in some patients due to reduced activity levels but is not a defining or common symptom of the disease itself.