chronic inflammatory demyelinating polyneuropathy
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chron·ic in·flam·ma·to·ry de·my·e·li·nat·ing pol·y·neu·rop·a·thy (CIDP),
an uncommon, acquired, demyelinating sensorimotor polyneuropathy, clinically characterized by insidious onset, slow evolution, (either steady progression or stepwise), and chronic course; symmetric weakness is a predominant symptom, often involving proximal leg muscles, accompanied by paresthesias, but not pain; CSF examination shows elevated protein, whereas electrodiagnostic studies reveal evidence of a demyelinating process, primarily conduction slowing rather than block; sometimes responds to prednisone.
chronic inflammatory demyelinating polyneuropathyAbbreviation: CIDP
A gradually progressing autoimmune muscle weakness in arms and legs caused by inflammation of the myelin sheath covering peripheral nerve axons. Demyelination slows or blocks conduction of impulses to muscles. Numbness and paresthesia may accompany or precede loss of motor function, which varies from mild to severe. Laboratory findings include elevated protein levels in the cerebrospinal fluid. The inflammatory damage involves not only phagocytes (neutrophils and macrophages), but also immune complexes and complement activation by myelin autoantigens. Immunosuppressive drugs are used to treat this illness. Plasma exchange therapy or infusions of immunoglobulins often are used first, to produce a remission. CIDP is considered to be a chronic counterpart to Guillain-Barré syndrome.
See also: polyneuropathy