Treatment information
Understanding your pathway
What is the treatment?
A dorsal root ganglion is a cluster of sensory nerve cell bodies near a spinal nerve root. A block places medication near this region to assess or manage selected nerve-root pain. It is an injection procedure and is different from implanting a dorsal root ganglion stimulator. [1][2]
Who may be considered?
Selection depends on whether the symptoms, examination and relevant imaging fit a particular spinal nerve. The clinician should explain why this target is plausible and what the result could change. A neuropathic pain label alone does not identify the correct level or establish that a block is appropriate. [1][2]
Assessment, preparation and consent
Before deciding, discuss your diagnosis, previous treatment, medicines and relevant health conditions. Tell the clinician about allergies, infection, blood-thinning medicines, diabetes and possible pregnancy. Do not stop prescribed medicines yourself. Ask what alternatives are available, including not having a procedure, and allow time to consider the benefits, uncertainty and risks that matter to you. [3]
What happens during treatment?
A needle is positioned near the intended spinal nerve under imaging guidance. Contrast may be used to help assess placement before local anaesthetic, with or without corticosteroid, is given. The spinal region and approach affect the technique and risks. The treatment team monitors recovery and safe movement afterwards. [1][2]
Risks and safety considerations
Risks include bleeding, infection, allergic reaction, temporary numbness or weakness and nerve injury. Spinal injections can also cause severe headache or serious neurological complications. The risk discussion should be specific to the level, approach and medication; a description of a lumbar procedure cannot simply be applied to the neck. [1][2]
Recovery and when to seek help
Follow the written instructions for transport, supervision, medicines, activity and driving. Recovery depends on the treatment and your health, so a fixed return-to-work date cannot be promised. Ask who to contact outside clinic hours. Seek urgent assessment for fever with worsening pain, new weakness or other unexpected neurological symptoms. Call 000 for breathing difficulty, collapse or another medical emergency. [1][3]
Expected benefit and limitations
Response varies and may be absent or temporary. Improvement does not prove a single source or determine that an implant will help. Record the change in usual symptoms and function so the clinician can interpret the result. Further procedures require a separate assessment rather than following automatically from a positive response. [1][2]
Follow-up and rehabilitation
Before treatment, choose a practical goal such as walking, sleep or a daily task. Record changes in that activity, pain and any adverse effects, then discuss them at follow-up. Ask what degree of change would justify further treatment and what would lead to stopping or changing the plan. Rehabilitation and self-management may remain part of care even if symptoms improve. [3][4]
Questions to bring to your appointment
Ask which structure is being targeted, why this approach is being considered and how strong the evidence is for your diagnosis. Clarify costs, the planned review date and any practical help you may need at home. Bring previous reports and your medicine list so the discussion can address your circumstances rather than a generic treatment pathway.
Sources and further reading
Sources support the statements cited above. Overseas guidance may describe different services or eligibility rules. A procedure leaflet explains a technique and its risks; it does not establish that the treatment is effective for every condition.
- Dorsal root ganglion / nerve root block / transforaminal injection — Hull University Teaching Hospitals NHS Trust
- Low back pain and sciatica: recommendations — NICE
- Procedures in pain medicine clinical care standard — Faculty of Pain Medicine, ANZCA
- Options for chronic pain management — Healthdirect Australia