What does arthritis primarily involve?

Arthritis primarily involves inflammation of the joints. This condition is characterized by swelling, pain, warmth, and stiffness in the affected joints, which can lead to a decrease in mobility and functional capacity. The inflammation results from various factors, including autoimmune responses, wear and tear on the joints, or infection, depending on the type of arthritis.

In many cases, the inflammatory process damages the joint structures, such as cartilage and bone, which can further exacerbate symptoms and lead to the deterioration of joint function over time. While muscle spasms, weakness of bones, and muscle cramps may occur as secondary symptoms or due to other conditions, they are not defining features of arthritis itself. Thus, understanding that inflammation is the core issue in arthritis is crucial for recognizing its implications and managing the condition effectively.