S5 Ep22: Why Do We Itch?

PBS_ItsOKToBeSmartPublished: June 27, 2018942 views
Published: June 27, 2018

It’s one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for?

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