What is that rash? Genetic fingerprints can help doctors diagnose and treat skin conditions more effectively

Photo caption: Skin conditions like psoriasis and eczema can have rashes that are difficult to distinguish by eye. Photo credit: tylim / iStock via Getty Images Plus. Article by Raymond J. Cho. The Conversation – April 15, 2022.

Rashes can be thought of as a dysfunctional community of skin cells. Your skin harbors dozens of distinct cell types, including those that form blood vessels, nerves and the local immune system of the skin. For decades, clinicians have largely been diagnosing rashes by eye. While examining the physical appearance of a skin sample under a microscope may work for more obvious skin conditions, many rashes can be difficult to distinguish from one another. […]

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