Webster's New World Medical Dictionary

arthritis, rheumatoid
An autoimmune disease
characterized by chronic inflammation of joints.
Rheumatoid disease can also involve inflammation
of tissues in other areas of the body, such as the
lungs, heart, and eyes. Because it can affect multiple
organs of the body, rheumatoid arthritis is referred
to as a systemic illness. Although rheumatoid arthri-
tis is a chronic illness, patients may experience long
periods without symptoms. Also known as rheuma-
toid disease.
arthritis, septic
Joint inflammation caused by
infection from blood poisoning (sepsis) or from
infection within the affected joint itself, or as a side
effect of infection in other body tissues. Treatment
includes antibiotic medications and surgical
drainage. Also known as pyarthosis and suppurative
arthritis.
arthritis, spondylitis
A form of arthritis that
causes chronic inflammation of the spine.
arterial tension
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arthritis, systemic-onset chronic rheumatoid
See 
arthritis, systemic-onset juvenile rheuma-
toid.
arthritis, systemic-onset juvenile rheumatoid
A form of joint disease in children whose systemic
signs and symptoms include high intermittent fever,
a salmon-colored skin rash, swollen lymph glands,
enlargement of the liver and spleen, inflammation of
the lungs (pleuritis), and inflammation around the
heart (pericarditis). The arthritis itself may not be
immediately apparent, but in time it surfaces and
may persist after the systemic symptoms are long
gone. Also known as systemic-onset chronic arthri-
tis or Still’s disease.