P-Phenylenediamine-Induced Angioedema-Like Facies: A Case Report and Review of Pathomechanisms
March 2026
in “
Indian Dermatology Online Journal
”
Studysummary This report details a case study where a 40-year-old woman experienced allergic contact dermatitis and angioedema-like symptoms after using PPD-containing hair dye. Patch testing confirmed a positive reaction to PPD, highlighting the substance's potential to cause both T-cell and IgE-mediated hypersensitivity reactions.
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