Patch Testing Tricks


Bruce Jancin, Skin & Allergy News Digital Network

Coeur D’Alene, Idaho – Contact dermatitis goes together with moderate-to-severe atopic dermatitis like ham and eggs. Reading patch test results in such patients poses unique challenges, because of the impaired skin barrier function intrinsic to atopic dermatitis, coupled with the moist environment created under the occlusive patches, which predisposes to Staphylococcus aureuscolonization and superinfection.

All of this makes the evaluation of patch test results in atopic dermatitis more complicated than in patients without contact dermatitis. But there are tricks that greatly reduce the difficulty.

“Patch testing can play a crucial role in the work-up and management of patients with refractory atopic dermatitis. Prior to patch testing, measures should be taken to improve the skin barrier and reduce bacterial overload,” Dr. Sharon E. Jacob advised at the annual meeting of the Society for Pediatric Dermatology.

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