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Laryngitis
is inflammation of the voice box (larynx).
The most common cause of laryngitis is a viral infection of the upper airways, such as the common cold. Laryngitis also may accompany bronchitis or any other inflammation or infection of the upper airways. Excessive use of the voice, an allergic reaction, and inhalation of irritants such as cigarette smoke can cause short-lived (acute) or persistent (chronic) laryngitis. Bacterial infections of the larynx are extremely rare.
Symptoms are an unnatural change of voice, such as hoarseness, or even loss of voice that develops within hours to a day or so. The throat may tickle or feel raw, and a person may have a constant urge to clear the throat. Symptoms vary with the severity of the inflammation. Fever, a general feeling of illness (malaise), difficulty in swallowing, and a sore throat may occur in severe infections.
A diagnosis is based on the typical symptoms and voice changes. Sometimes a doctor looks down the throat with a mirror or a thin, flexible viewing tube, which shows some reddening and sometimes some swelling of the lining of the larynx. Because cancer of the larynx may cause hoarseness, a person whose symptoms persist more than a few weeks should be evaluated for cancer (see Nose and Throat Cancers: Laryngeal Cancer).
Treatment of viral laryngitis depends on the symptoms. Resting the voice (by not speaking), drinking extra fluids, and inhaling steam relieve symptoms and help healing. Whispering, however, may irritate the larynx even more. Treating bronchitis, if present, may improve the laryngitis. An antibiotic is given only for infection caused by bacteria.
Last full review/revision February 2003
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