3/5/2023 0 Comments Ever forward wristbandSo why does it feel paralyzed upon waking?ġ) It is actually, temporarily, paralyzed. The information that flows from your extremities back to your brain is temporarily disrupted. The radial nerve straightens out the arm and lifts your wrist and fingers.Īlthough Dyck says the exact physiology isn't completely understood, the effect of compressing any of these nerves in sleep - when you sleep on top of your arm or pin it underneath a partner - is like stepping on a garden hose. The musculocutaneous nerve bends the elbow. The axillary nerve lifts the arm at the shoulder. (It’s also true that numbness in the arm can also be a symptom of something more serious, like a heart attack.) "The more likely thing is nerve compression - nerves are being pushed on and squashed, and that causes these symptoms," he says. And it's actually a cool example of how the body can protect itself even during the paralysis of sleep.ĭyck explained there's a common misconception that pins and needles and numbness are caused by a lack of blood flow to the nerves. This phenomenon is really common, James Dyck, a neurology researcher with the Mayo Clinic, told me in 2016. But the feeling in my arm always came back. When this happened to me as a kid, I panicked, thinking I'd done something horrible to my body, anxious that I'd never be able to move my arm again. Waking up in the middle of the night to discover one of your arms has lost all feeling is frightening.Īt first, the limb is limp and flops around like a useless bag of bone before coming back to life with a flood of "pins and needles" sensations.
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