Rheumatism is a term used to describe various conditions that cause pain and inflammation in the joints, muscles, and connective tissues. It is not a specific disease but rather a group of disorders, including rheumatoid arthritis, osteoarthritis, and lupus. Symptoms often include joint pain, stiffness, and swelling, which can affect daily activities. The exact cause of rheumatism varies depending on the specific condition but may involve genetic, environmental, and immune system factors. Diagnosis typically involves physical examinations, medical history, and imaging tests. Treatment options may include medications, physical therapy, and lifestyle changes to manage symptoms and improve quality of life.