A dermatome is an area of skin supplied by a single spinal nerve. There are 31 pairs of spinal nerves, forming nerve roots that branch from your spinal cord, but only 30 dermatomes. Your spinal nerves ...

A pinched nerve can be very painful—no matter where it’s located in your body. If you experience one in your back, it can travel to other parts of the body and cause sharp pain, tingling, numbness, or ...

The spinal cord is a long bundle of nerves and cells that extends from the lower portion of the brain to the lower back. Spinal cord functions include carrying signals between the brain and the rest ...