Laryngeal electromyography (LEMG) is a diagnostic test that evaluates the nerve and muscle function of the voice box. LEMG is used when there's concern about vocal fold paralysis, weakness, or abnormal movement. By placing small needles into the larynx muscles, the doctor can measure how well the nerves are firing and whether the vocal folds receive the proper signals. LEMG helps diagnose conditions like vocal fold paresis, nerve injury, or movement disorders such as spasmodic dysphonia.

The procedure takes about 30 minutes and is performed in the office. A topical anesthetic is used on the skin, and fine needles (similar to acupuncture needles) are inserted into the neck to reach the laryngeal muscles. You'll be asked to make vocal sounds during the test. While the sensation can be uncomfortable, most patients tolerate it well. There may be mild soreness or bruising in the neck afterward, but no significant recovery time is needed. Results can help guide surgical or voice therapy planning. LEMG is safe and effective when performed by experienced specialists.