In brachial plexus degeneration, atrophy may occur in the deltoid muscles.

In this case, breathing can be impaired due to a lack of muscle control of the diaphragm.

If the recurrent larangyl nerve is targeted, the pharynx will begin to atrophy and voice function may be lost.

[2] Diagnosis may be made through thorough patient history, neurological evaluation and EMG/MRI/Muscle biopsy to rule out other causes of neuralgia.

However, in a severe case permanent nerve damage and muscle loss may occur.