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Updated: Aug 15, 2026

Quantitative Autonomic Testing
Published on: July 19, 2011
Subcutaneous botulinum toxin type A inhibits regional sweating: an individual observation
1Department of Neurology, Mayo Clinic Jacksonville, Florida 32224, USA.
Abstract:
Botulinum toxin inhibits neuromuscular transmission by blocking the exocytosis of acetylcholine. It was tested for a similar effect on cholinergic postganglionic sympathetic neurones at the sudomotor junction. Subcutaneous injections of 0.1 and 1.0 units of type A botulinum toxin into the forearm of a healthy subject abolished local thermoregulatory sweating in cutaneous regions spanning 1.0 and 1.5 cm for nearly 1 year without producing weakness. Botulinum toxin, therefore appears to have potent anhidrotic activity.
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