Paraphenylenediamine is a potent skin sensitizer, which is uniformly present in hair dyes and henna tattoos. Paraphenylenediamine in hair dyes is well known to cause severe immediate reactions over the face; however, a long-term dermatologic reaction to paraphenylenediamine is hitherto unknown. In the present report, a case of prurigo nodularis–like lesions of the lower face resulting from application of hair dye to the moustache is described.
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References
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ThyssenJP, WhiteJM. Epidemiological data on consumer allergy to p-phenylenediamine. Contact Dermatitis, 2008; 59 (6): 327–343.
2.
CheyWY, KimKL, YooTY, et al.Allergic contact dermatitis from hair dye and development of lichen simplex chronicus. Contact Dermatitis, 2004; 51 (1): 5–8.
