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  • Title: Sympathetic skin response (SSR) in erythromelalgia.
    Author: Kazemi B, Shooshtari SM, Nasab MR, Roghani RS, Haghighi FM.
    Journal: Electromyogr Clin Neurophysiol; 2003; 43(3):165-8. PubMed ID: 12712804.
    Abstract:
    BACKGROUND: Erythromelalgia (EM) is characterized by severe pain associated with local redness and hotness in the extremities. When the extremity is lowered, or heat is applied, the pain is intensified and when coldness is applied, or the extremity is elevated the pain is decreased. OBJECTIVE: To evaluate if there is any sympathetic nervous system involvement in erythromelalgia, sympathetic skin response (SSR) test was done. SETTING: This study was conducted during the years 1998-2000 in the Department of Physical medicine and Rehabilitation, Shiraz University of Medical Sciences. METHODS: SSR study was done on 22 patients with erythromelalgia and 22 normal subjects were matched for age and sex for comparison. RESULTS: There is a significant difference between the patients and controls especially in the lower extremity findings (P = 0.000). More than 72.7% of the patients had abnormal SSR. CONCLUSION: It is concluded that sympathetic peripheral fibers (C fibers) are involved in erythromelalgia and it is probably the pathogenesis of the disease.
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