In general, this is a safe procedure. Like all injections, there is a very small risk of bleeding, infection, or allergic reaction. Rarely, the spinal sac, which contains the nerves, may be penetrated during a lumbar injection. This rarely may cause headaches. Should you experience one, lie flat in bed and contact your doctor's office for any further recommendations or treatment.
The steroid medication can cause a temporary increase in blood sugar levels. If you are diabetic, you'll need to monitor your glucose levels more frequently for 4-5 days following the injection.
You will be asked to report any allergies at the time your injection is scheduled. This information is necessary for your doctor to know in advance. Substitutions or modifications to the medications may be necessary.
Some other side effects that are uncommon with this procedure are bruising, transient lowering of the blood pressure, transient breathing problems, numbness of the extremities, bowel or bladder dysfunction, paralysis, sexual dysfunction, and possible catheter shearing. If catheter shearing occurs, a small surgical procedure may be required to remove the sheared catheter.