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  • Title: Sudomotor function in autonomic failure.
    Author: Baser SM, Meer J, Polinsky RJ, Hallett M.
    Journal: Neurology; 1991 Oct; 41(10):1564-6. PubMed ID: 1922796.
    Abstract:
    We measured sweat production to direct gland stimulation with intradermal methacholine in patients with autonomic failure and in normal subjects. The sympathetic skin response (SSR) to electrical stimulation was assessed in some of the same subjects. Patients with pure autonomic failure (PAF) and multiple system atrophy (MSA) produced significantly less sweat than controls. None of the patients manifested greater than normal sweat production. Impaired sweat gland function does not differentiate MSA and PAF. The SSR did not correlate with sweat response to methacholine. An SSR can occur in the absence of normal sweat gland function. The diminished production of sweat in response to intradermal methacholine in PAF suggests that human sweat glands do not develop chronic denervation supersensitivity. Intradermal methacholine is a simple method to assess sweat gland function.
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