Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001172
Arthritis, Rheumatoid
A chronic systemic disease, primarily of the joints, marked by inflammatory changes in the synovial membranes and articular structures, widespread fibrinoid degeneration of the collagen fibers in mesenchymal tissues, and by atrophy and rarefaction of bony structures. Etiology is unknown, but autoimmune mechanisms have been implicated.
Rheumatoid Arthritis
D012720
Severity of Illness Index
Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.
Illness Index Severities,Illness Index Severity
D018450
Disease Progression
The worsening and general progression of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis.