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<http://schema.org/description>
"Itch can be a useful warning sign, or a maddening symptom with no cure. But the origins of itch have long been a mystery. Scientists think they've come closer to understanding the origins of itch in a molecule that makes mice scratch like mad."
<https://www.hawaiipublicradio.org/npr-news/npr-news/2013-05-23/why-you-have-to-scratch-that-itch>