Nerve pain · Patient guide
Peripheral nerve pain and trapped nerves
Peripheral nerves carry messages between the spinal cord and the rest of the body. A nerve can become painful when it is injured, irritated or squeezed somewhere along its path.
New or worsening weakness, rapidly spreading numbness, problems with balance, or symptoms affecting breathing, swallowing, bladder or bowel control need prompt medical assessment.
What does “peripheral nerve” mean?
Peripheral nerves are the nerves outside the brain and spinal cord. Some carry feeling, some control muscles and others help with automatic functions such as sweating.
A problem affecting one nerve is sometimes called a mononeuropathy. When many nerves are affected—often beginning in both feet—the term peripheral neuropathy is used. Sciatica is different because it begins where a nerve root leaves the lower spine.
What might nerve pain feel like?
Symptoms may include burning, shooting or electric-shock pain, pins and needles, numbness, or skin that has become unusually sensitive to touch. If the nerve also controls muscles, there may be weakness or muscle wasting.
These sensations are clues rather than proof. Joint, tendon, circulation and spinal problems can sometimes feel similar.
Where can a nerve become trapped?
Common examples include the median nerve at the wrist in carpal tunnel syndrome, the ulnar nerve near the elbow, and the common peroneal nerve near the outside of the knee. Nerves may also be affected by an injury, scar tissue or an operation.
Sometimes the problem is not one trapped nerve. Diabetes, vitamin deficiency, alcohol, some medicines, infections and other illnesses can affect several nerves and need a different approach.
How is the cause assessed?
The consultation maps the symptoms along the path of the nerve and checks feeling, strength and reflexes. It also looks for a problem in the spine or a nearby joint that could explain the symptoms.
Blood tests may help when several nerves could be affected. Nerve-conduction studies and EMG test how electrical signals travel through larger nerves and muscles. Ultrasound or MRI may show swelling, pressure or injury around a particular nerve.
No test is perfect. Small painful nerve fibres may not show on routine nerve-conduction testing, and an imaging abnormality does not always explain the symptoms. Results need to be considered with the history and examination.
What treatment may help?
When possible, treatment starts with the cause. This might mean avoiding repeated pressure, changing an aggravating activity, treating diabetes or a vitamin deficiency, or reviewing a medicine that may be contributing.
A splint, specialist physiotherapy or occupational therapy may reduce pressure and maintain movement and strength. Desensitisation work can help skin that has become unusually sensitive. Medicines used for neuropathic pain may reduce symptoms for some people, but benefit and side effects need review.
A carefully targeted injection or nerve block is considered only in selected situations. It may sometimes help confirm a suspected source or reduce inflammation around a specific nerve, but it is not a general cure for nerve pain and carries risks.
When is referral or surgery considered?
Neurological assessment may be needed when several nerves appear affected, the cause is unclear, or weakness or numbness is progressing. Referral to a peripheral-nerve or surgical colleague may be appropriate when there is convincing pressure on one nerve, important weakness, or persistent symptoms despite sensible non-surgical care.
Surgery aims to release or repair a specific nerve. Whether it is likely to help depends on the nerve, the cause and how long it has been affected.
Common questions
Is every tingling feeling caused by nerve damage?
No. Tingling can have several causes. The location, timing, examination and any useful tests need to fit before a nerve problem can be diagnosed.
Is a trapped nerve the same as sciatica?
Both involve nerves, but sciatica begins at a nerve root in the lower spine. A trapped peripheral nerve is affected farther along the arm or leg, such as at the wrist, elbow or outside of the knee.
Will nerve-conduction tests always find the problem?
No. They are useful for many larger-nerve problems but do not detect every form of nerve pain. A normal test therefore needs to be interpreted alongside the symptoms and examination.
Can a trapped nerve recover?
Many pressure-related nerve problems improve when the pressure is removed, although recovery may be slow. The outlook depends on the cause, how long the nerve has been affected and whether there is weakness or loss of feeling.
Evidence used
- NICE guideline NG127: Suspected neurological conditions: recognition and referral.
- NHS: Peripheral neuropathy—symptoms, causes and treatment.
- King's College Hospital: Nerve-conduction studies and electromyography.
Written and clinically reviewed by Dr Oliver Seyfried · Published and last reviewed 3 September 2026