Original Article
Inhibition of Axon Reflex Vasodilatation by Topically Applied Capsaicin

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Topical application of capsaicin to human skin produced an initial burning erythematous reaction which diminished over 24 hr leaving the skin unresponsive to histamine-induced axon reflex vasodilatation without altering sensitivity to pain, touch and temperature. Depletion of substance P from local sensory nerve terminals is suggested as a possible explanation for this capsaicin effect.

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