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Carpal tunnel syndrome - Diagnosis


Prevention

How is carpal tunnel syndrome diagnosed?
The diagnosis of carpal tunnel syndrome is suspected based on the symptoms and the distribution of the hand numbness. Examination of the neck, shoulder, elbow, pulses, and reflexes can be performed to exclude other conditions that can mimic carpal tunnel syndrome.
Your doctor may ask you questions and conduct one or more of the following tests to determine whether you have carpal tunnel syndrome:
History of symptoms.
Your doctor will review the pattern of your symptoms. For example, because the median nerve doesn't provide sensation to your little finger, symptoms in that finger may indicate a problem other than carpal tunnel syndrome.
Carpal tunnel syndrome symptoms usually occur include while holding a phone or a newspaper, gripping a steering wheel, or waking up during the night.
Physical examination.
Your doctor will conduct a physical examination. He or she will test the feeling in your fingers and the strength of the muscles in your hand.
Bending the wrist, tapping on the nerve or simply pressing on the nerve can trigger symptoms in many people.
Imaging studies
Some doctors recommend an X-ray or CT Scan of the affected wrist to exclude other causes of wrist pain, such as arthritis or a fracture.
Electromyogram
This test measures the tiny electrical discharges produced in muscles. During this test, your doctor inserts a thin-needle electrode into specific muscles to evaluate the electrical activity when muscles contract and rest. This test can identify muscle damage and may rule out other conditions.
Nerve conduction study.

In a variation of electromyography, two electrodes are taped to your skin. A small shock is passed through the median nerve to see if electrical impulses are slowed in the carpal tunnel. This test may be used to diagnose your condition and rule out other conditions.

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