MedlinePlus Medical Encyclopedia: Dermatitis, close-up of allergic contact

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Dermatitis, close-up of allergic contact

This is an example of an allergic skin reaction (allergic dermatitis) caused by hair dye. The skin on the neck is red (erythematous), thickened (lichenified), scaly, and crusted.

Update Date: 5/3/2006

Updated by: Michael S. Lehrer, M.D., Department of Dermatology, University of Pennsylvania Medical Center, Philadelphia, PA. Review provided by VeriMed Healthcare Network.

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