Botulinum toxin (BT-A) is a neurotoxin which is produced by the Gram-positive anaerobic bacterium Clostridium botulinum. The efficacy of Botulinum toxin in treating hyperhidrosis and the glabellar lines is well known and FDA approved.Because BT-A inhibits the release of acetylcholine and many other neurotransmitters such as norepinephrine and substance P at the level of nerve ending, this toxin has been used to treat a lot of dermatological disorders which are thought to be triggered by these neurotransmitters.In this article we are discussing the medical off-label uses of BT-A in dermatology.ª 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.
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