At a glance
A pain block injection is a procedure in which a doctor injects a local anaesthetic (a numbing medicine), sometimes combined with a steroid (an anti-inflammatory medicine), near a specific nerve or group of nerves to stop pain signals from reaching the brain.
The injected medicine coats the target nerve and temporarily interrupts the electrical signals it carries. Because those signals never complete their journey to the brain, the area the nerve serves goes numb and the pain fades. Depending on the medicine used and the nerve targeted, relief can last from a few hours to several months.
Medical Condition
Pain block injections are used when pain is severe, ongoing, or has not responded well to tablets or physiotherapy. An anaesthesiologist (a doctor who specialises in pain and sedation) chooses this approach when the pain can be traced to a specific nerve pathway.
- Chronic back or neck pain caused by herniated discs or arthritis pressing on spinal nerves
- Sciatica (sharp pain that travels down one leg because of a compressed sciatic nerve)
- Nerve pain after shingles, known as post-herpetic neuralgia
- Complex regional pain syndrome (CRPS), a condition where the nervous system produces severe, lasting pain after an injury
- Cancer-related pain that has not responded to oral medications
- Severe pain from pancreatitis (inflammation of the pancreas) or pancreatic cancer, treated with a coeliac plexus block
- Headaches caused by the greater occipital nerve at the back of the skull
- Rib or chest-wall pain after surgery or a fractured rib
- Shoulder, hip, or knee joint pain from osteoarthritis (wear-and-tear of the joint)
- Pain management during or after surgery, as part of an anaesthetic plan
A pain block is not suitable for everyone. Your care team will review your history carefully before recommending it.
- Active infection at or near the planned injection site
- A blood-clotting disorder or use of blood thinners that cannot be safely paused
- Allergy to local anaesthetic medicines
- Certain heart conditions that make the procedure risky
- Pregnancy, in most cases where a steroid is part of the injection
Risks & Complications
Pain block injections are generally considered low-risk procedures, but, like any injection into the body, they carry a small chance of complications.
- Temporary soreness, bruising, or swelling at the injection site
- Temporary worsening of pain in the first day or two, sometimes called a 'steroid flare'
- Dizziness or a drop in blood pressure shortly after the injection
- Infection at the injection site, which is uncommon when sterile technique is used
- Bleeding into the tissue around the injection site
- Accidental injection into a blood vessel, which can cause temporary heart rhythm changes or ringing in the ears
- Nerve damage, which is rare but can cause numbness, weakness, or lasting pain in the area
- Allergic reaction to the anaesthetic or steroid medicine
- For injections near the spine: a small risk of headache if the membrane around the spinal cord is accidentally punctured (post-dural puncture headache)
- Repeated steroid injections over time can weaken nearby tendons or affect blood sugar levels in people with diabetes
Preparation & Procedure
Before the appointment, your doctor will ask about all medicines you take, especially blood thinners and diabetes medicines, because some need to be paused for a set number of days. Smoking and alcohol can slow healing and affect how the body responds to anaesthetic, so most teams ask patients to avoid both for at least 24 hours before the procedure.
If sedation (a light sleep medicine given through a drip) is planned alongside the block, you will usually be asked to stop eating solid food six hours before and stop drinking clear fluids two hours before. If no sedation is planned, fasting requirements are often lighter or not required at all. Your care team will give you specific instructions.
Common tests done beforehand depend on the type of block and your general health. They may include:
- Blood tests to check clotting ability and kidney function
- Blood pressure and heart rate check
- A review of any existing imaging such as MRI or CT scans, so the doctor can plan the injection site accurately
- An allergy screening if there is any history of reactions to anaesthetic medicines
The procedure itself usually follows these steps, though the exact order can vary by block type and hospital:
- You change into a hospital gown and lie on a procedure table in a position that gives the doctor clear access to the target area.
- Your skin is cleaned with an antiseptic solution and, in most cases, draped with a sterile covering.
- A small amount of local anaesthetic is injected into the skin surface to numb the entry point, reducing the sting of the deeper needle.
- The doctor uses guidance, usually ultrasound (sound-wave imaging) or fluoroscopy (real-time X-ray), to navigate the needle to the exact location of the target nerve.
- Contrast dye (a liquid that shows up on X-ray) may be injected first to confirm the needle tip is in the right place.
- The pain-blocking medicine, with or without steroid, is slowly injected.
- The needle is removed, and a small dressing is placed over the entry point.
- You are moved to a recovery area and monitored, usually for 30 to 60 minutes, before being allowed to leave.
Aftercare
Most patients are observed in a recovery area for up to an hour after the injection, so staff can check blood pressure, watch for any allergic reaction, and confirm the target area is responding as expected. The vast majority go home the same day.
- Arrange for someone to drive you home; do not drive on the day of the procedure, especially if sedation was given or if the block affects your arm or leg strength.
- Keep the injection site clean and dry for the rest of the day; a small waterproof dressing is usually sufficient.
- Expect some soreness or numbness around the injection site for the first 24 to 48 hours. An ice pack wrapped in a cloth can help.
- Avoid strenuous activity, heavy lifting, and bathing in hot water for at least 24 hours after the procedure.
- Watch for signs of infection at the site, such as increasing redness, warmth, swelling, or fever, and contact your care team if any appear.
- Your doctor will schedule a follow-up appointment, usually within one to four weeks, to assess how well the block worked and whether further injections or other treatments are needed.
- If the block contained a steroid, people with diabetes should monitor their blood sugar more closely for a few days, as steroids can raise it temporarily.
- Long-term management often combines the block with physiotherapy, lifestyle adjustments, or other pain treatments, as a block alone is rarely a permanent solution.
Cost & What Determines It
The price of a pain block injection varies considerably depending on the complexity of the procedure, where it is performed, and what supporting services are bundled in. A straightforward peripheral nerve block (one that targets a nerve in the arm or leg) typically costs less than a deep block near the spine or a complex nerve cluster like the coeliac plexus.
- Type of block: a simple trigger-point injection differs substantially in effort and equipment from a fluoroscopy-guided epidural or a sympathetic nerve block deep in the abdomen
- Guidance technology used: procedures done under ultrasound or real-time X-ray (fluoroscopy) cost more than landmark-guided injections
- Hospital class and country: a procedure at a private international hospital in a major city carries different fees than the same procedure at a regional hospital
- Number of injections in one session: some conditions require bilateral blocks (both sides) or multiple levels of the spine, which adds to the total
- Type of medicine injected: some long-acting anaesthetics or specialty preparations are more expensive than standard ones
- Whether sedation or monitored anaesthesia care is added to the block
- Pre-procedure imaging if new scans are needed rather than using existing ones
- Follow-up consultations and any repeat injections as part of a pain management course
A hospital package for a pain block often includes the consultation, the procedure room, the medicines used during the injection, and the recovery monitoring fee. Items that are commonly billed separately include pre-procedure blood tests, new imaging studies, specialist consultation fees beyond the anaesthesiologist, and any prescription medicines to take home.
BPJS Kesehatan does not cover medical procedures performed outside Indonesia, and most Indonesian private health insurance policies have the same limitation. Patients who seek pain block treatment abroad typically pay out of pocket or through international private insurance that explicitly covers overseas care. Before travelling, ask the hospital for a written cost estimate that lists each item individually. This makes it easier to compare between hospitals and avoids unexpected charges on arrival.
Frequently Asked Questions
How many sessions of a pain block injection will I need?
The number of sessions depends on your condition and how well your body responds to the first injection. Some people get lasting relief from a single injection, while others benefit from a short course of two or three, spaced weeks apart. Your doctor will reassess your pain level after each session before recommending another.
What does a pain block injection feel like?
Most patients feel a brief sting or pressure at the injection site, followed by a spreading warmth or numbness as the medicine takes effect. The area is usually numbed with a local anaesthetic (a numbing agent injected into the skin) before the main injection, which helps keep discomfort mild. Mild soreness at the site for a day or two afterwards is common.
How soon will I feel relief after a pain block injection?
Some people notice reduced pain within hours, though for certain types of injections the full effect builds over a few days to a week. If a corticosteroid (an anti-inflammatory medicine) is included, its benefit often peaks around the five to ten day mark. Your doctor will ask you to track your pain levels so they can judge whether the injection has worked.
How much does a pain block injection cost?
The cost varies based on which nerve or region is being targeted, the type of medicine used, whether image guidance such as ultrasound or fluoroscopy (live X-ray) is needed to place the needle precisely, and the class of hospital or clinic. Because these factors differ from patient to patient, the clearest way to get a real number is to request a written estimate from the hospital before booking.
This page is general information, not a substitute for medical advice. Every case is different. Your doctor decides what is right for you.
