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Why do paper cuts hurt so much?

The short answer

Your fingertips are packed with tiny nerve endings, and even a shallow paper cut reaches them. Your brain can also pinpoint pain in your fingertips better than almost anywhere else.

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A paper cut is tiny, but the pain can feel huge. Your fingertips are more crowded than you think.

What is inside your fingertips?

They are packed with tiny nerve endings. That makes them some of the most sensitive spots on your body. A paper cut is shallow, but it still reaches those nerve endings. And your brain can pinpoint pain there better than almost anywhere else.

Illustration from the video: A paper cut is shallow, but it still reaches those nerve endings.

Illustration from the video: And your brain can pinpoint pain there better than almost anywhere else.

What is all that pain for?

You use your fingertips to explore the world and handle small things. Strong pain there works like an alarm that helps keep them safe.

Illustration from the video: You use your fingertips to explore the world and handle small things.

Illustration from the video: Strong pain there works like an alarm that helps keep them safe.

Illustration from the video: If your body grew to match that map, you would have giant hands and lips.

One more thing

Your brain even has a map of your body for touch. If your body grew to match that map, you would have giant hands and lips.

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