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Laryngitis is voice loss due to inflammation in the larynx or voice box. This inflammation can be due to an overuse injury, infection, or other causes of irritation. The larynx is called the “voice box” because the vocal cords which produce sound are in this area. The job of vocal cords is to open and close while air passes through them from the lungs to produce sounds. Normally the vocal cords are smooth and move fluidly. When inflammation happens to these vocal cords, the nature of a person’s voice changes, becoming hoarse or quiet. Acute laryngitis last a few days, but chronic laryngitis can last for weeks or longer. Generally, acute laryngitis is caused by a virus or voice overuse which will resolve on its own. If the hoarseness does not resolve, it may be an indication of something more serious going on. Most of the time, laryngitis is acute and will resolve. Acute laryngitis is caused by viral infections like the common cold or strain of the vocal cords caused by yelling or screaming, and far less commonly by bacterial infections like diphtheria. When laryngitis lasts longer than three weeks, it is called chronic laryngitis. Chronic laryngitis can be caused by vocal strain over time, vocal cord injury, or nodules (growths) on the vocal cord. Chronic sinusitis can be caused by inhaled fumes, smoking, chronic sinusitis, alcohol, gastroesophageal reflux disease (GERD), chronic voice overuse (as in singers), bacterial or parasitic infection, cancer, and vocal cord paralysis. The risk of having laryngitis is increased by having a cold, smoking, drinking alcohol, having acid reflux, being exposed to chemicals on the job, and voice overuse.
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