![]() Paresthesia is a sensation of pins and needles, numbness, or another abnormal sensation, often tied to peripheral neuropathy.Fortunately, this is quite temporary, while carpal tunnel syndrome is often chronic. Having your hand or foot fall asleep is another. Carpal tunnel syndrome, which occurs when a nerve becomes compressed in an already tight channel in the wrist, is one well-known example. Compression (or entrapment) neuropathy develops because of pressure on a nerve.Nerves of the legs and arms are part of the peripheral nervous system, and tend to be the first ones affected by diseases of peripheral nerves. Peripheral neuropathy is a condition affecting nerves in the peripheral nervous system, which includes nerves outside of the brain and spinal cord.So, what is peripheral neuropathy? It’s worth clarifying some commonly used medical terms. If you have one of these conditions, you’re far from alone: an estimated 20 million people have a form of peripheral neuropathy that might make hands or feet numb or tingly. However, many other causes of nerve problems - more than 100, in fact - can cause similar, though more prolonged and persistent, symptoms, as noted below. When you remove the pressure (by changing position, for example), the problem goes away. The cause in these cases is simply pressure on one or more nerves traveling into the hands or feet. And when this is intermittent, temporary, and related to holding one position for a long time, it’s rarely anything to worry about. I usually explain, “The nerves are not happy.” In general, numbness, tingling, and other symptoms called paresthesia are most commonly due to abnormal nerve function. When someone complains to me about their hand or leg falling asleep, I reassure them. But did you ever wonder why in the world this happens? Read on! When the nerves are not happy Now that you know it’s temporary and happens to everyone, it may not bother you. The first time this happened, it might have been worrisome. Then over a few minutes - maybe you shook your hands, stamped your foot - everything goes back to normal. ![]() Or, you arise from a long dinner or movie and one of your legs feels that way. ![]() It feels dead, heavy, and simply won’t work. You awaken in the morning and one of your hands is completely numb.
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