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.


Ehlers-Danlos syndrome

Group of connective tissue disorders characterized by hyperelasticity and fragility of the skin, hypermobility of the joints, and fragility of the cutaneous blood vessels and sometimes the large arteries due to deficient quality or quantity of collagen.


Recording of electrical activity generated in muscle for diagnostic purposes.


Inflammation of the brain.

End-stage renal disease

Loss of renal function, either acute or chronic, that results in azotemia and syndrome of uremia.


Study of the distribution and determinants of health-related states or events in specified populations, and application of this study to control of health problems.


Shallow ulcer; in the stomach and intestine, an ulcer limited to the mucosa, with no penetration of the muscularis mucosa.

Erythrocyte sedimentation rate (ESR)

Rate of settling of red blood cells in anticoagulated blood.

Etanercept (Enbrel)

A dimeric fusion protein consisting of the extracellular ligand-binding portion of the tumor necrosis factor (TNF) receptor linked to the Fc portion of human IgG1. Used in the treatment of inflammatory disorders such as Crohn’s disease and rheumatoid arthritis.


Branch of philosophy that deals with the distinction between right and wrong, with the moral consequences of human actions.


Bodily exertion for the sake of restoring the organs and functions to a healthy state or keeping them healthy.

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