My doctor wants to inject my back with a pain killer or steroid for my back pain, which he says is caused by degenerative lumbar spinal stenosis. What is involved in having a shot in your back?

A treatment for some different causes of back pain is the epidural injection. This injection allows your doctor to put the medication right into the back where the pain is, around the spinal nerves.

To have the injection, you will lie on your stomach. If your doctor is using a guided technique, he or she will need x-rays to guide the needle to the right spot, otherwise, the injection can be done in a doctor's office or clinic.

Once the needle is in the right place, the medication is slowly injected into the back. Some people do well with one injection, some others need a series of injections. You will need to discuss this with your doctor.

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