Abstract
To the Editor: Notalgia paresthetica (NP) is a chronic sensory neuropathy affecting the interscapular area, especially the T2-T6 dermatomes and characterized by pruritus on the upper back with cutaneous signs associated with rubbing and scratching.1,2 Botulinum toxin A (BTX-A) could have beneficial effects on localized pruritus, possibly by preventing the release of substance P, a mediator involved in pain and itch.3,4 One publication reports complete resolution of pruritus in 2 patients with NP treated with BTX-A.
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