Glossary RandomizedEach participant being assigned to a study drug group by chance Rheumatic diseasesA group of diseases that affect the joints and muscles. Some rheumatic diseases are caused by wear and tear. Others are caused by a problem with the body’s defense system Rheumatoid arthritisA disease of the body’s defense system that affects the joints A B C D E F G H I J K L M N O P Q R S T U V W X Y Z show all