Diagnosis at Mayo Clinic

By Mayo Clinic Staff

Appointments

Mayo Clinic accepts appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System sites.

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Mayo Clinic doctors trained in nerve damage evaluate people who may have peripheral nerve injuries, including injuries of the brachial plexus.

Your doctor will review your medical history, ask about any accidents or previous surgeries, and discuss your symptoms with you. Your doctor will also conduct a physical and neurological examination. If your neurological examination shows signs of a nerve injury, your doctor may recommend diagnostic tests, which may include:

  • Electromyography (EMG). In an EMG, a thin-needle electrode inserted into your muscle records your muscle's electrical activity at rest and in motion. Reduced muscle activity can indicate nerve injury.
  • Nerve conduction study. Electrodes placed at two different points in your body measure how well electrical signals pass through the nerves.
  • Magnetic resonance imaging (MRI). An MRI uses powerful magnets and radio waves to produce detailed images of the nerves that may be damaged and the affected area.
Mar. 20, 2014