Brachial Plexitis

Brachial plexitis is an inflammation of the brachial plexus. This is a rare, poorly understood condition.

After the nerve roots leave the cervical spine they combine to form the brachial plexus (a network of nerves). This plexus can become inflamed and cause arm pain. Usually the pain is severe but only lasts for several days, after which the arm becomes weak in multiple different muscles. The weakness may be profound, but will usually get better with time.

Imaging studies of the cervical spine will usually be negative, and if there is any question that the pain is from a pinched nerve root or a brachial plexus inflammation, an EMG study can help differentiate the two conditions

Treatment typically includes oral steroids, rest and patience.

• Article written By:
• Peter F. Ullrich, Jr., MD

November 2, 2006

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