Focal Entrapment
Focal nerve entrapment, also known as nerve compression syndrome or compression neuropathy, occurs when pressure is placed on a specific nerve. Because a single nerve is affected, symptoms usually occur in a particular area of the body supplied by that nerve.
Common symptoms can include tingling, numbness, burning sensations, pain or weakness. Symptoms may develop immediately after pressure or injury to the nerve, or they may appear gradually over several hours or days.
Nerve compression may result from prolonged or repeated pressure. Examples include pressure on the radial nerve from resting an arm over the back of a chair, pressure on the ulnar nerve from frequently leaning on the elbows, or compression of the peroneal nerve from an ill-fitting cast or brace.
In some cases, the nerve may be compressed by surrounding tissues or structures. This can occur with conditions such as carpal tunnel syndrome, or as a result of swelling, a ganglion cyst, haematoma or other local lesion. Certain medical conditions can also make nerves more susceptible to compression.
A focal nerve entrapment can often be suspected based on the patient’s symptoms and neurological examination. Nerve Conduction Studies (NCS) may then be used to help confirm the diagnosis, assess the severity of the nerve compression and determine whether other nerves are also affected. Imaging may sometimes be recommended if a local structural cause of the compression is suspected.
If you are experiencing persistent numbness, tingling, burning, weakness or symptoms that may be related to a trapped or compressed nerve, Synapse Neurology provides specialist neurological assessment and nerve conduction testing where appropriate. Contact Synapse Neurology to arrange a consultation.