The influence of the opiate antagonist naloxone on experimental pruritus

The antipruritic effect of naloxone hydrochloride was evaluated in a double-blind, cross-over design. Systemic pretreatment with the opiate antagonist did not interfere with the cutaneous itch and flare responses evoked by morphine or histamine, nor did it inhibit the morphine-produced potentiation of the histamine-elicited skin reactions.