Experimental study of the potential for contact sensitization and cross‐reaction of imidazole antifungals

We examined the potential for contact sensitization of miconazole nitrate and croconazole hydro‐chloride and the cross‐reaction between them in guinea pigs by the maximization lest of Mugnsson and Kligman. Contact sensitivity was induced by croconazole hydrochloride in 5 out of 7 animals which, after being injected with 5% croconazole hydrochloride, underwent a closed patch with 25% croconazole hydrochloride. Contact sensitivity was not induced by miconazole nitrate. The 5 animals sensitized to croconazole hydrochloride were tested with 8 other imidazole antifungals and positive reactions were observed to oxiconazole nitrate in 2 of the 5 animals. This response may be a cross‐reaction.