Looking for rheumatic disease types, treatments, and associated rheumatology definitions? From abatacept to WOMAC, learn about common terms related to arthritis and rheumatic and musculoskeletal diseases. Looking for information about MACRA? See MACRA terms and definitions.



Manner of walking.


Relating to the stomach and intestines.


Category to which an individual is assigned by self or others, on the basis of sex.

Gene expression

Detectable effect of a gene; appearance of an inherited trait.

Gene therapy

Alteration of somatic or germ-line DNA to correct or prevent diseases; the process of inserting a gene artificially into the genome of an organism to correct a genetic defect or to add a new biologic property or function with therapeutic protocol.


Branch of science concerned with the means and consequences of transmission and generation of the components of biologic inheritance.


Study of the structure of the genome of particular organisms, including mapping and sequencing.


Branch of medicine concerned with the medical problems and care of the aged.

Giant cell arteritis (GCA)/temporal arteritis

Common type of vasculitis, or blood vessel inflammation, seen mostly in older adults. Formerly called temporal arteritis, as it tends to affect the arteries located along the temples on the sides of the head. In GCA, arteries inflame, causing headache, blurred vision, pain in the shoulders or hips, jaw pain after chewing food, fever, pain in the scalp, and other symptoms. May lead to blindness if it is not treated promptly, usually with glucocorticoids. Occurs more often in women than in men.

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Glomerular filtration rate (GFR)

Volume of water filtered out of the plasma through glomerular capillary walls into Bowman capsules per unit time; considered equivalent to inulin clearance.

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