Brachial neuritis is a term used to describe an inflammation of the brachial plexus that causes sudden-onset shoulder and arm pain, followed by weakness and/or numbness.

After the nerve roots leave the cervical spine (in the neck), they combine to form the brachial plexus. The brachial plexus is a network of nerves that runs through the shoulder and down the arm. Inflammation of this network of sensitive nerves can cause sudden, severe pain.

The condition is known by a variety of names, including:

Parsonage-Turner Syndrome

Brachial Plexitis

Brachial Plexopathy

Brachial Plexus Injury

Brachial Neuropathy

Acute Brachial Radiculitis

Parsonage-Aldren-Turner Syndrome

Brachial Plexus Neuropathy