Musculoskeletal symptoms are very common and may arise from joints, bones, muscles, ligaments, tendons, or bursas (see Introduction to the Biology of the Musculoskeletal System Introduction to the Biology of the Musculoskeletal System The musculoskeletal system provides form, stability, and movement to the human body. It consists of the body's bones (which make up the skeleton), muscles, tendons, ligaments, joints, cartilage... read more ).
Common symptoms of musculoskeletal disorders include
Inflammation may cause pain, swelling, warmth, tenderness, impaired function, and sometimes redness of the overlying skin. Inflammation can result from many different musculoskeletal disorders, such as autoimmune disorders (for example, rheumatoid arthritis Rheumatoid Arthritis (RA) Rheumatoid arthritis is an inflammatory arthritis in which joints, usually including those of the hands and feet, are inflamed, resulting in swelling, pain, and often destruction of joints.... read more 
) and infections. When inflammation affects a joint, fluid may accumulate inside the joint, causing pain, swelling, and decreased range of motion.
