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Two genes clear up psoriasis and eczema confusion

The two inflammatory skin disorders, often misdiagnosed, are distinguishable with a simple test

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5:56pm, July 9, 2014

IT ITCHES  A new gene test can distinguish between psoriasis (shown) and eczema, skin conditions with remarkably similar appearances.

A test might prevent hundreds of thousands of misdiagnosed cases of skin disease by simply checking two genes, scientists report in the July 9 Science Translational Medicine.

Eczema and psoriasis are widespread, affecting 10 percent and 3 percent of the population, respectively. Both skin diseases produce itchy red patches that can look similar, even under the microscope. Accurate diagnosis is crucial because treatmentsfor one disease can exacerbate symptoms of the other, says dermatologist Kilian Eyerich of the Munich University of Technology in Germany. And some of the drugs cost $10,000 to $15,000 a year, he adds.

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