[Notalgia paresthetica: Treatment with botulinum toxin type A]

Notalgia paresthetica is a sensory mononeuropathy caused by compression localized in the dorsal region. The condition is clinically characterised by the presence of pruritus, paresthesias and hyperalgesia associated with a hyperpigmented patch in the correspondingt dermatoma, substantially impairing quality of life. We report the cases of two patients aged between 35 and 65years with chronic symptoms and treated in our service with botulinum toxin type A in the affected areas. We observed a decrease in the EVA pain scale and the intensity of the pruritus after infiltrations, as well as a reduction in the hyperpigmented patch at the first, third and sixth months after the intradermal injections that has been maintained after a year. We conclude that botulinum toxin typeA treatment could be a safe and useful alternative in these patients, as it has been shown to be effective over a longer term than available treatments to date, although further studies are required to confirm our findings.