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  • Title: Sympathetic skin responses in patients with hyperthyroidism.
    Author: Gozke E, Ozyurt Z, Dortcan N, Ore O, Kocer A, Ozer E.
    Journal: Electromyogr Clin Neurophysiol; 2007; 47(2):117-21. PubMed ID: 17479729.
    Abstract:
    BACKGROUND: The aim of this study was to investigate the disorders of sympathetic nervous system in patients with hyperthyroidism using sympathetic skin response (SSR). MATERIAL AND METHODS: Twenty-two newly diagnosed cases with hyperthyroidism were included in the study. The results were compared with those of 20 healthy controls. SSR was recorded with the contralateral electrical stimulation of the median nerve (of the upper extremities) and tibial nerve (of the lower extremities) with active electrodes placed on palms and soles and reference electrodes attached on the dorsal aspects of hands and feet. RESULTS: Ages of the cases with hyperthyroidism and controls ranged between 15-65 years (mean: 46.7 +/- 15.0 years) and 24-62 years (mean: 39.6 +/- 9.8 years) respectively (p > 0.05). In all the control subjects SSR could be obtained, while from the lower extremities of 4 cases with hyperthyroidism (18.0%) SSR could not be elicited. Mean SSR latencies of lower extremities were found significantly longer than control group (p < 0. 05). No difference was detected between mean amplitudes of SSR in upper and lower extremities. CONCLUSION: These findings suggest that SSR is useful for investigation of sympathetic nervous system involvement in cases with hyperthyroidism.
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