The word Arthritis comes from the greek word arthron meaning joint and the latin word itis meaning inflammation. Arthritis effects the musculo skeletal system especially the joints, it is the main cause of disability among people of 55 year of age in industrialized countries. Arthritis is not a single disease, it is a term that covers over hundred medical conditions. Osteoarthritis is the most common form of arthritis and generally effects elderly patients.Rheumatoid arthritis is significantly more common in women than men and generally strikes when the patient is aged between 40-60. However children and much older people may also be effected. It is one of the leading problem in world wide, its an extremely debilitating disease,since there are many kinds of arthritis, which can effect the body in many ways. This book is specially focused on the clinical features, diagnosis and management of arthritis by Unani system of medicine. So that people may be benefited worldwide.