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From Citizendium, the Citizens' Compendium
Mononeuropathy is "disease or trauma involving a single peripheral nerve in isolation, or out of proportion to evidence of diffuse peripheral nerve dysfunction. mononeuropathy multiplex refers to a condition characterized by multiple isolated nerve injuries. Mononeuropathies may result from a wide variety of causes, including ischemia; traumatic injury; compression; connective tissue diseases; cumulative trauma disorders; and other conditions." Multiple mononeuropathies that occur at the same time are called mononeuropathy multiplex or mononeuritis multiplex.
Polyneuropathies are "diseases of multiple peripheral nerves simultaneously. Polyneuropathies usually are characterized by symmetrical, bilateral distal motor and sensory impairment with a graded increase in severity distally. The pathological processes affecting peripheral nerves include degeneration of the axon, myelin or both. The various forms of polyneuropathy are categorized by the type of nerve affected (e.g., sensory, motor, or autonomic), by the distribution of nerve injury (e.g., distal vs. proximal), by nerve component primarily affected (e.g., demyelinating vs. axonal), by etiology, or by pattern of inheritance."
Demyelination may be caused by autoimmune diseases (such as Guillain-Barre syndrome) and hereditary neuropathies. These tend to affect motor axons. These show reduced velocity on nerve conduction testing.
- ↑ Anonymous (2014), Mononeuropathies (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Anonymous (2014), Polyneuropathies (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Anonymous (2014), Chronic inflammatory polyradiculoneuropathy (English). Medical Subject Headings. U.S. National Library of Medicine.
- ↑ Köller H, Kieseier BC, Jander S, Hartung HP (March 2005). "Chronic inflammatory demyelinating polyneuropathy". N. Engl. J. Med. 352 (13): 1343–56. DOI:10.1056/NEJMra041347. PMID 15800230. Research Blogging.
- ↑ Miralles GD, O'Fallon JR, Talley NJ (December 1992). "Plasma-cell dyscrasia with polyneuropathy. The spectrum of POEMS syndrome". N. Engl. J. Med. 327 (27): 1919–23. PMID 1333569.