Arthritis actually means inflammation or swelling of a joint, accompanied by pain. But nowadays it used by laymen as a general term for any disease of the joint.Arthritis is a symptom of a disease and not a disease by itself. There are over 100 different forms of arthritis. The most common form, osteoarthritis (degenerative joint disease) is a result of trauma to the joint, infection of the joint, or age. Other arthritis forms are rheumatoid arthritis, psoriatic arthritis, and related autoimmune diseases. Septic arthritis is caused by joint infection.
The cause of arthritis is largely non specific. But various factors like heredity, obesity, injury and stress may play a part. Other causes can be: