Sympathetic cholinergic dysfunction in amyotrophic lateral sclerosis

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Abstract
— The results of evaluation of the autonomic nervous system of a patient with amyotrophic lateral sclerosis are presented. As previously reported, parasympathetic function and sympathetic adrenergic function were normal as assessed by cardiovascular reflexes. However, a disturbance in sympathetic cholinergic function as measured by the sympathetic skin response was demonstrated. We suggest that the latter test be included in all electrophysiological evaluations of autonomic function in amyotrophic lateral sclerosis.