Merck Manual

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A Herniated Disk
A Herniated Disk
A Herniated Disk

The tough covering of a disk in the spine can tear (rupture), causing pain. The soft, jelly-like interior may then bulge out (herniate) through the covering, causing more pain. Pain occurs because the bulge puts pressure on the spinal nerve root next to it. Sometimes the nerve root becomes inflamed or is damaged.

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Herniated Disk