What Is a DRG Block?

A DRG block is an injection near a nerve area along your spine called the dorsal root ganglion. It is done to help relieve nerve-related pain.

What Happens During the Procedure?

• Your skin will be cleaned and numbed.
• A needle is guided to the correct area using X-ray or CT.
• Medications are injected to help calm the nerve.
• You will be monitored for a short time afterward.

Common Effects You Might Notice

These are temporary and usually settle within hours:

• Numbness or weakness in the leg.
• Mild bruising or soreness.
• A brief increase in pain before relief starts.

Less Common Risks

• Infection at the injection site.
• Headache.
• Allergic reaction to medication.
• Bleeding under the skin.

Rare but Serious Complications

Though very rare, these can be serious and need immediate attention:

• Severe nerve injury (lasting numbness, weakness, or pain).
• Bleeding inside the spine (epidural haematoma), which can press on nerves.
• Loss of bladder or bowel control.
• Severe leg weakness.
• Severe headache when sitting or standing.
• Difficulty breathing.

Call your doctor or go to the nearest Emergency Department right away if you have:

• Severe back pain.
• Sudden weakness or numbness in your legs.
• Numbness in your groin or inner thighs ("saddle area").
• Loss of control of your bladder or bowels.
• Severe headache that improves when you lie flat.
• Trouble breathing.

Before the Procedure

• Tell your doctor if you take blood-thinning medication.
• Arrange for someone to drive you home.
• You may need to fast for a few hours before.

Questions?

If you have any concerns or want more information, please speak with your doctor. We are here to help.

Follow up. An appointment will be made for you with your Specialist 4-6 weeks following this procedure.