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| AuthorsMonica L Piecyk, MDPeter H Schur, MD | Section EditorRN Maini, BA, MB BChir, FRCP, FMedSci, FRS | Deputy EditorPaul L Romain, MD |
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Rheumatoid arthritis (RA) is associated with various nonarticular manifestations, including severe neurologic abnormalities. A variety of pathogenic mechanisms are responsible:
Because both neurologic and muscular disorders may present with weakness, muscular diseases that occur in association with RA will also be reviewed here. Other nonarticular and non-neurologic problems associated with RA are also discussed elsewhere. (See "Overview of the systemic and nonarticular manifestations of rheumatoid arthritis".)
Disorders of the central nervous system (CNS) due to RA include cervical myelopathy, vasculitis, rheumatoid nodules located within the CNS, meningitis, organic brain syndrome, and (rarely) progressive multifocal leukoencephalopathy. Stroke also occurs with increased frequency, but the basis for this association is not well understood.
Cervical myelopathy — Cervical myelopathy (cervical myeloradiculopathy) resulting from atlantoaxial subluxation, atlantoaxial impaction, and/or subaxial subluxation is discussed separately. (See "Cervical subluxation in rheumatoid arthritis".)
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