Can PPD in hair dye cause lichen simplex chronicus?

Updated: Feb 15, 2019
  • Author: Jason Schoenfeld, MD; Chief Editor: William D James, MD  more...
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A small study looking at lichen simplex chronicus and the use of PPD-containing hair dye showed clinically relevant improvement in symptoms after discontinuation of PPD exposure, thus providing a basis for the role of sensitization and contact dermatitis in the etiology of lichen simplex chronicus. [7] . Several of the patients who cleared after avoiding paraphenylenediamine had widespread, not localized, dermatitis.

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