12090 Nerve Blocks

Overview

A nerve block is a procedure where a doctor places numbing medicine, and sometimes anti-inflammatory medicine, close to a nerve or group of nerves. It can temporarily stop pain signals from reaching the brain. Nerve blocks are used to treat pain and sometimes to help find which nerve is causing a problem.

Nerve blocks are a common pain and surgical procedure. They are done in hospitals, clinics, and pain centres.

People of any age can have a nerve block, including children when a specialist team is involved. They are often used in adults with long-lasting nerve pain, after surgery, or after shingles.

Symptoms

Common symptoms

• Sharp, burning, shooting, or electric-shock-like pain along an arm, leg, or other area.
• Tingling, numbness, or skin that feels extra sensitive.
• Weakness or heaviness in the affected area.
• Pain that makes sleep, movement, or daily tasks hard.
• After a nerve block, temporary numbness, warmth, heaviness, or mild soreness near the injection is common.

Symptoms in children

• Children may show pain by guarding a limb, refusing to walk, crying, or being irritable.
• They may need a child-friendly pain team and extra reassurance before and after the procedure.

Symptoms in older adults

• Older adults more often have nerve pain from shingles, spine wear, or diabetes.
• They may have more medicines and health conditions to review before a nerve block.

Causes

Main causes

• Nerve blocks are not caused by something. They are used when pain signals travel along a nerve because of irritation, pressure, injury, or damage.
• Common reasons include nerve pain after shingles, spine or joint problems, surgery, injury, diabetes-related nerve pain, and some long-lasting pain conditions.
• Sometimes a block is done to find out which nerve is causing pain or to predict whether another treatment, such as surgery, may help.

Risk factors

• Bleeding problems or taking blood-thinning medicines.
• An infection in the skin or area where the needle will go.
• A previous allergic reaction to numbing medicine.
• Pregnancy, or severe heart, liver, or kidney disease.
• Taking several medicines or having health conditions that affect how the body handles medicines.

When to see a doctor

See a doctor urgently if:

• Fever, spreading redness, or pus at the injection site.
• New or worsening weakness, numbness, or trouble moving a limb.
• Severe headache, back pain, or loss of bladder or bowel control after a block near the spine.
• Pain relief is much less than expected, or you feel very unwell after the procedure.

Book a routine appointment if:

• Pain relief does not last as long as expected.
• You need to plan another block or discuss other pain options.
• You have questions about medicines, driving, work, or exercise after the block.
• You feel anxious or low about your pain and want more support.

Diagnosis

A clinician will ask about your pain, health history, medicines, and allergies, and will examine you. They may review scans or nerve tests. The decision to offer a nerve block is based on whether it is likely to help and whether it is safe for you.

Tests that may be done

• Physical and nerve examination.
• A pain diary and a clear description of where the pain travels.
• Imaging such as X-ray, ultrasound, CT, or MRI if needed.
• Nerve studies, such as nerve conduction tests or EMG, in some cases.
• Ultrasound or X-ray guidance during the block to place the needle accurately.

What to expect at your appointment

You may be asked to stop certain medicines before the block, but only if your clinician tells you to. You may need a friend or family member to drive you home if you receive sedation or have numbness. The injection usually takes only a few minutes, and the numbing medicine may sting briefly. You will be monitored for a short time afterwards.

Treatment

A nerve block is one part of pain care. It can reduce pain enough to move more easily and take part in therapy. Some people need one block, while others have a series. A block does not always cure the underlying problem, but it can be a helpful step.

Self-care at home

• Follow the discharge instructions from your care team.
• Keep the injection site clean and dry as advised.
• Use ice or heat only as advised, and protect numb skin from injury.
• Avoid driving or using sharp tools while an area is numb or weak.
• Note how much pain relief you get and any side effects, and try gentle movement if it feels comfortable.

Medical treatments

Clinicians may use numbing medicine, anti-inflammatory medicine, or other prescribed medicines near the nerve. They may use imaging to guide the needle. Care often includes physical therapy, pain psychology, and other pain services. Repeated blocks may be offered if they help.

When is surgery considered?

Nerve blocks are often used around surgery to reduce pain and the need for general anaesthesia. Surgery may be considered for an underlying cause if blocks and other treatments do not help enough.

Living with this condition

Pain and procedures can disrupt sleep, work, and mood. Plan rest, gentle activity, and follow-up appointments. A pain diary can help you and your clinician see what is working.

Lifestyle tips

• Pace activities and build gentle movement over time.
• Use relaxation and a regular sleep routine.
• Avoid smoking, as it can affect healing and circulation.
• Ask for workplace or home adjustments if pain makes tasks hard.

Diet and exercise

Eat regular balanced meals and drink enough water. Gentle exercise such as walking or physiotherapy can help, but start slowly and avoid movements that cause sharp pain. Ask your clinician before heavy lifting or sports after a block.

Mental health and emotional wellbeing

Long-lasting pain can cause worry, low mood, frustration, and poor sleep. These feelings are common and treatable. Tell your clinician if they affect you. If you ever have thoughts of harming yourself, contact your local emergency services or a crisis line in your country right away.

Prevention

You cannot always prevent the need for a nerve block, because it is a treatment for pain. You can lower the risk of problems by telling your clinician about allergies, bleeding problems, blood-thinning medicines, pregnancy, and infections, and by following aftercare advice.

Vaccines

Some causes of nerve pain, such as shingles, can be reduced by vaccines recommended for your age or health. Ask your clinician whether a vaccine is right for you.

Screening programmes

There is no routine screening test for nerve blocks. Screening for conditions that cause nerve pain depends on your age, health, and symptoms.

Complications

If left untreated

• Ongoing pain can affect sleep, mood, work, and relationships.
• Muscles may weaken from disuse if pain stops you moving.
• Rare block-related problems, such as infection or nerve injury, can become more serious if ignored.

Long-term outlook

Most people recover well. Nerve blocks help many people, though relief may be temporary. A pain team can adjust the plan if needed. Serious complications are uncommon.

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