A pinched nerve is an injury that occurs when additional pressure is exerted on a nerve, compressing it. This happens when the surrounding tissues are damaged or inflamed, exerting pressure on the nearby nerves, and leads to numbness, pain, and/or a tingling sensation in the affected area.
A herniated disc is often the cause of a pinched nerve. If the disc slips out of its place between the spinal vertebrae, it may end up pressing the spinal nerve going down the leg. Similarly, a pinched nerve may also be caused by irritated or swollen muscles, enlarged bones, or degenerated ligaments.
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