Arthritis is inflammation of one or more joints, which results in pain, swelling, stiffness, and limited movement. There are over 100 different types of arthritis. See also: Joint pain
Gout is a form of acute arthritis that causes severe pain and swelling in the joints. It most commonly affects the big toe, but may also affect the heel, ankle, hand, wrist, or elbow.
Septic arthritis is inflammation of a joint due to a bacterial infection other than gonorrhea (joint infection due to gonorrhea has different symptoms.
Juvenile rheumatoid arthritis (JRA) is a term used to describe a common type of arthritis in children. It is a long-term (chronic) disease resulting in joint pain and swelling.