ELi5: Why do certain sensations like chalk on a chalkboard or rubbing styrofoam together cause your skin to crawl?

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ELi5: Why do certain sensations like chalk on a chalkboard or rubbing styrofoam together cause your skin to crawl?

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Anonymous 0 Comments

Only one i hate is when a pencil eraser is used down to the metal. I scrape chalkboards for kicks
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