Ankylosing Spondylitis is arthritis that affects the spine. It often involves redness, heat, swelling, and pain in the spine or in the joint where the bottom of the spine joins the pelvic bone.

Gout is caused by crystals that build up in the joints. It usually affects the big toe, but many other joints may be affected.

Juvenile Arthritis is the term used to describe arthritis in children. Arthritis is caused by inflammation of the joints.
Osteoarthritis usually comes with age and most often affects the fingers, knees, and hips. Sometimes osteoarthritis follows a joint injury. For example, you might have badly injured your knee when young and develop arthritis in your knee joint years later.

Psoriatic Arthritis can occur in people who have psoriasis (scaly red and white skin patches). It affects the skin, joints, and areas where tissues attach to bone.
Reactive Arthritis is pain or swelling in a joint that is caused by an infection in your body. You may also have red, swollen eyes and a swollen urinary tract.

Rheumatoid arthritis happens when the body’s own defense system doesn’t work properly. It affects joints and bones (often of the hands and feet), and may also affect internal organs and systems. You may feel sick or tired, and you may have a fever.
Arthritis is seen with other conditions. These include:

Lupus happens when the body’s defense system harms the joints, heart, skin, kidneys, and other organs.
Infection that gets into a joint and destroys the cushion between the bones.