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| | THE MERCK MANUAL, Sec. 14, Ch. 183, Disorders Of The Peripheral Nervous System |
 | | The axon may be primarily affected (eg, in diabetes mellitus, Lyme disease, or uremia or with toxic agents) or the myelin sheath or Schwann cell (eg, in acute or chronic inflammatory polyneuropathy, leukodystrophies, or Guillain-Barré syndrome). |
 | | Multiple mononeuropathy is usually secondary to collagen vascular disorders (eg, polyarteritis nodosa, SLE, Sjögren's syndrome, RA), sarcoidosis, metabolic diseases (eg, diabetes, amyloidosis), or infectious diseases (eg, Lyme disease, HIV infection). |
 | | Single and multiple mononeuropathies are characterized by pain, weakness, and paresthesias in the distribution of the affected nerve. |
| www.merck.com /mrkshared/mmanual/section14/chapter183/183f.jsp (2924 words) |
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