What actually causes that tingly feeling when your hand falls asleep?

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What actually causes that tingly feeling when your hand falls asleep?

In: Biology
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When there’s pressure on your limbs for a while, their nerves can get a bit compressed and that fiddles with their ability to communicate with the brain, creating a tingling sensation

To add to u/Chocolate_caffeine’s answer, not only the nerves in your hands, but the nerves in your arms, specifically the elbow. If you sleep with your arms bent, or you work with your arms bent, that can cause swelling which puts additional pressure on the nerves.

If it happens frequently or it wakes you up, you should see doctor.

Sleeping with your arms straight can help relieve the problem.

Its actually a brachial plexus palsy aka the nerves in your arm pit that get compressed. Yes you can compress others but when your whole hand goes to sleep it’s all in the pit