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When you are most likely to get pins and needles

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Constant pressure or compression on a sensory nerve and the loss of adequate bloody supply to nerves leads to temporary changes in cell membranes, Dr van Vuuren comments.

“These changes disrupt the ability of sensory nerves to carry minute electrical flashes or impulses (also called action potentials) between the brain and spinal cord or other parts of the body.”

Once you remove the compression, your sensory nerves respond by generating uncontrolled action responses in the form of pins and needles that shoot through the area as the nerve cells “wake up’ again.

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