Nerve conduction velocity (NCV) test: This test measures signal strength and speed along specific large motor and sensory nerves and reveals the location of nerve damage.Test results show any abnormal muscular electrical and can help differentiate between muscle and nerve disorders. Electromyography (EMG) test: For this test, tiny needles connected to electrodes are inserted into specific muscles to record their electrical activity at rest and during contraction.MRI: An MRI of the spine can reveal tumors or nerve root compression, also known as a pinched nerve, that could be causing your peripheral neuropathy.CT scan: CT scans of the spine can show herniated discs, spinal stenosis (narrowing of the spinal canal), tumors and bone irregularities that may affect nerves.The doctor may also recommend nerve function and imaging test to identify the type, location and extent of any nerve damage. Various blood tests may be ordered to detect diabetes, vitamin deficiencies, liver, thyroid or kidney dysfunction, infections or signs of abnormal immune system activity. They may also ask you about any exposure to toxins, alcohol or tobacco use, history of infections or diabetes, and family history of neurological diseases. Your doctor will ask about your symptoms and anything that triggers or relieves them. Low blood pressure that leads to lightheadedness or dizziness.Excessive sweating or being unable to sweat.Numbness and tingling in the hands or feet.
Feeling like you’re wearing socks or gloves when you’re not.Symptoms vary depending on which type of nerve is damaged. The peripheral nervous system consists of three main types of nerves: sensory, motor and autonomic. Signals from the brain and spinal cord communicate with the nerves in the peripheral nervous system to move the body or conduct functions such as breathing and digestion. The peripheral nervous system branches out from the central nervous system, which consists of the brain and spinal cord. Another form of peripheral neuropathy known as autonomic neuropathy affects heart function, blood pressure, bladder function and digestion.īut in general, peripheral neuropathy most commonly refers to nerve damage in the hands, arms, legs and feet. Brachial plexopathy is a form of peripheral neuropathy that involves injury to the brachial plexus, an area on each side of the neck where nerves from the spinal cord split off into the arms.
There are more than 100 types of peripheral neuropathy that each have their own names.įor example, mononeuropathy is damage to a single nerve. Peripheral neuropathy is caused by nerve damage within the peripheral nervous system, and symptoms vary depending on the type of nerve damage.
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