Steroid injection is a targeted treatment used to reduce inflammation, swelling, and scarring in the vocal folds or airway. It’s most commonly used for vocal fold scarring (which can cause hoarseness or a tight-sounding voice) or subglottic stenosis (narrowing just below the vocal cords that may cause breathing symptoms). Injecting a small dose of corticosteroid directly into the affected area can soften scar tissue and reduce swelling, improving both voice and airflow.

The procedure is performed in the office with a flexible or rigid laryngoscope. After numbing the throat and nose, the doctor uses a thin needle passed through the scope or neck to deliver the medication precisely where needed. The injection takes about 10–15 minutes and is generally well tolerated — patients may feel pressure or brief discomfort but usually no significant pain. You can return to work or normal activities the same day, although voice rest for 24 hours is often recommended. Most patients begin to notice improvement within days to a week. You may need one or more injections over time, depending on your condition. Risks are very low and include temporary irritation or minor voice changes.