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English Abstract
Journal Article
[Clinical characteristics of Cuban epidemic neuropathy].
Revista de Neurologia 1997 December
INTRODUCTION: At the beginning of 1992 an epidemic neuropathy was seen in Cuba.
MATERIAL AND METHODS: To determine the clinical characteristics we studied the clinical and neurological features, cerebrospinal fluid, and did neurophysiological investigations and sural nerve biopsies.
RESULTS: Sixty patients were studied. Of these, 42 (70%) had polyneuropathy which was predominantly peripheral and 18 (30%) had combined forms. Most patients had asthenia and weight loss. The polyneuropathic effects were mainly in the legs. In 33.3% of the patients there were distal autonomic effects and sphincter disorders. Only 7 patients had hypoacusia. However, subclinical neurosensorial hypoacusia was seen in 33.3%. Optic neuropathy affected central vision bilaterally and symmetrically with temporal pallor of the papilla in half the cases. In 3 patients there was loss of ganglionar nerve fibres of the papillo-macula bundle. The contrast sensitivity visual test was abnormal in some patients with peripheral polyneuropathy, showing subclinical optic neuropathy in these cases. Sensory neuroconduction suggested axonal neuropathy in 30 patients, demyelinating neuropathy in 5 patients, while the remainder were normal. Motor neuroconduction was normal in most patients. Sural nerve biopsy of 27 patients showed axon damage in 96.2% of cases.
CONCLUSIONS: The clinical picture is similar to that seen in nutritional deficiencies and toxic processes.
MATERIAL AND METHODS: To determine the clinical characteristics we studied the clinical and neurological features, cerebrospinal fluid, and did neurophysiological investigations and sural nerve biopsies.
RESULTS: Sixty patients were studied. Of these, 42 (70%) had polyneuropathy which was predominantly peripheral and 18 (30%) had combined forms. Most patients had asthenia and weight loss. The polyneuropathic effects were mainly in the legs. In 33.3% of the patients there were distal autonomic effects and sphincter disorders. Only 7 patients had hypoacusia. However, subclinical neurosensorial hypoacusia was seen in 33.3%. Optic neuropathy affected central vision bilaterally and symmetrically with temporal pallor of the papilla in half the cases. In 3 patients there was loss of ganglionar nerve fibres of the papillo-macula bundle. The contrast sensitivity visual test was abnormal in some patients with peripheral polyneuropathy, showing subclinical optic neuropathy in these cases. Sensory neuroconduction suggested axonal neuropathy in 30 patients, demyelinating neuropathy in 5 patients, while the remainder were normal. Motor neuroconduction was normal in most patients. Sural nerve biopsy of 27 patients showed axon damage in 96.2% of cases.
CONCLUSIONS: The clinical picture is similar to that seen in nutritional deficiencies and toxic processes.
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