Rheumatic conditions impact various aspects of your musculoskeletal system, including joints, tendons, ligaments, bones, and muscles. Many of these conditions fall under the umbrella of arthritis, a term encompassing joint-related disorders. These are often referred to as musculoskeletal diseases. Recognizable symptoms of rheumatic diseases include joint pain, restricted joint movement, and inflammation characterized by swelling, redness, and warmth in the affected areas.