What is a herniated disc?

Spinal discs are the rubbery cushions that reside between the bones (vertebrae) of the spine. When a disc is exposed to excessive compression, it may bulge or rupture, pressing against and irritating the spinal cord or nerve roots, causing pain, weakness, numbness, or tingling. The part of the body affected depends on the area of the spinal cord affected. Because the lumbar region of the spine tends to be exposed to higher compressive forces, this is a common location for herniated discs, potentially irritating the spinal cord and adjacent nerve roots, causing weakness, pain, and tingling in the legs and lower extremities. However, any part of the spine can be affected. For example, a herniated disc in the neck typically causes referred pain in one or both shoulders and arms.^[1]

• Motor weakness