What is this procedure?
The ganglion impar is a small sympathetic nerve structure in front of the sacrum and coccyx.
When might it be considered?
Selected tailbone or perineal pain when evaluation suggests this nerve pathway may contribute. Your physician will determine whether this approach is appropriate and discuss alternatives, including non-procedural care.
What to expect
Imaging guides the needle. Local anesthetic, sometimes with a steroid, is delivered near the target. Your clinician reviews your history, medications, allergies, and any relevant tests. The team explains the procedure and obtains your consent. Positioning, skin preparation, local numbing, and imaging guidance may be part of the visit, depending on the procedure.
Tell your care team about pregnancy, infection, medication allergies, or blood-thinning medicines. Do not stop or change medicines without instructions from the clinician managing them.
Potential benefits
Relief may improve sitting comfort or activity. The response can help guide further care. Benefit and duration vary; some patients experience little or no improvement. An injection is one possible part of a broader care plan.
Possible risks & side effects
Temporary soreness or pain flare, bleeding, infection and medication reactions are possible. Risks vary with the approach.
This is not a complete list of risks. Your physician should explain the options, limitations, and consent information specific to your planned procedure.
Recovery & follow-up
Return to activities gradually as instructed. Record changes in pain, including whether sitting becomes easier. Observation and activity instructions depend on the procedure, medication, and your response. Ask whether you need a driver and when you can return to usual activities. Follow your own discharge instructions rather than a general online timeline.
Contact your care team about unexpected or worsening symptoms. Seek urgent medical help for severe symptoms, difficulty breathing, or new significant weakness.
Common questions
Will relief be immediate?
Local anesthetic may act quickly, while a steroid, if used, may take longer. Some patients do not obtain meaningful relief.
Will this procedure relieve my pain?
It may help selected patients, but improvement is not guaranteed. Your physician will discuss realistic goals based on the suspected source of your pain.
Will I need more than one injection?
The need for further treatment depends on your response, the diagnosis, and safety considerations. There is no automatic course of injections that suits everyone.
How should I prepare?
Ask the team for your specific instructions, including medicines, food and drink, transportation, and what to bring. Do not change your medicines based on this page.
Is this available at Columbia Pain Management?
Contact the office to discuss eligibility and scheduling. Your physician will assess whether a procedure is appropriate for you.
Patient education reference: cuh.nhs.uk — patient education.