How do trigger point injections work for cervical spine disc herniation?

Symptom relief. If a disc herniation is causing muscle spasm and localizable pain the injection can decrease pain. It will have no effect on the disk herniation itself or any spinal cord or nerve irritation caused by pressure from the herniation.
Sometimes. If associated with muscle spasm they can help alleviate the pain do to the muscles spasming as a reaction to the disc herniation.

Related Questions

Any trigger point injections for cervical spine disc herniation?

Typically not. Trigger point injections are best used for spasm and pain in the muscle. If the pain is originating from a cervical disc herniation, the trigger point is usually not successful, and even when it is, rarely gives any lasting relief. Read more...
Give you some relive. But consult with your neurologist. Read more...
See pain specialist. Trigger point injections generally have little or no benefit for this issue. Targeted injections may help. See an interventional pain specialist. Read more...