Twenty-eight-day follow-up of patch test reactions to p-phenylenediamine and p-phenylenediamine dihydrochloride: A multicentre study on behalf of the European Environmental and Contact Dermatitis Research Group.
Ewa YoungKlaus Ejner AndersenMagnus BruzeAna Giménez-ArnauKatrine Ross-HansenJeanne D JohansenJakob Torp MadsenErik ZimersonCecilia SvedmanPublished in: Contact dermatitis (2019)
No late-appearing reactions to PPD or PPD-DHC were observed at any dose. There is a risk of missing contact allergy when the dose is decreased.