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New research finds that a common microbe may be directly causing itchiness on the skin it colonizes. Kinga Krzeminska/Getty Images hide caption

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Kinga Krzeminska/Getty Images

What can trigger an itch? Scientists have found a new culprit

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The itchy sensation alerts our bodies to potential threats on our skin, but in some cases, itch can become a chronic condition. Warumpha Pojchananaphasiri/Getty Images hide caption

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Warumpha Pojchananaphasiri/Getty Images

The origin of itch has confounded scientists for decades. Oktay Ortakcioglu/iStockphoto.com hide caption

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Oktay Ortakcioglu/iStockphoto.com

Why You Have To Scratch That Itch

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