Click one of the letters above to be taken to a page of all terms beginning with that letter.
Restless Legs Syndrome
Restless Legs Syndrome (RLS) is a disorder of the nervous system that causes a feeling of uneasiness and restlessness in the legs resulting in an irresistible urge to move the legs.
Rheumatoid arthritis is a form of arthritis in which the body's immune system attacks the joints. This causes inflammation of the synovial membrane (the substance that protects and lubricates the joints) resulting in hot, painful swelling and usually joint erosion and deformity over time.