Study on cross-reactivity to the para group.

  title={Study on cross-reactivity to the para group.},
  author={Mauro Picardo and Carlo Cannistraci and Antonio Cristaudo and Chiara de Luca and Baldassarre Santucci},
  volume={181 2},
In 80 patients, positive to at least one hapten of the para group (para-phenylenediamine, diaminodiphenylmethane, benzocaine, PPD mix), patch tests were carried out with freshly prepared solutions of para-phenylenediamine (PPD) and of 3 selected aromatic compounds related structurally to PPD (para-aminophenol, ortho-aminophenol, hydroquinone). The number of positive reactions correlated with the rate of decomposition of the substances as evaluated by high-pressure liquid chromatography. PPD… CONTINUE READING