Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. “Rheumatism” is a non-specific term referring to various medical conditions affecting the joints and connective tissue. Diseases such as rheumatoid arthritis, osteoarthritis, lupus, fibromyalgia and tendonitis fall under the category of rheumatic disorders. While the term “rheumatism” is not used in medical literature anymore, it is still widely used by laypersons. Learn more about rheumatic disorders, their causes, symptoms and treatment in this book.