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Definition
By Mayo Clinic staffLaryngitis is an inflammation of your voice box (larynx) from overuse, irritation or infection.
Inside the larynx are your vocal cords — two folds of mucous membrane covering muscle and cartilage. Normally your vocal cords open and close smoothly, forming sounds through their movement and vibration. But in laryngitis, your vocal cords become inflamed or irritated. This swelling causes distortion of the sounds produced by air passing over them. As a result, your voice sounds hoarse. In some cases of laryngitis, your voice can become almost undetectable.
Laryngitis may be short-lived (acute) or long lasting (chronic). Most cases of laryngitis are triggered by temporary viral infection or vocal strain and are not serious. Persistent hoarseness can sometimes signal a more serious underlying medical condition.
- Taking care of your voice. National Institute of Deafness and Other Communication Disorders. http://www.nidcd.nih.gov/health/voice/takingcare.asp. Accessed Feb. 9, 2010.
- Lustig LR, et al. Common laryngeal disorders. In: McPhee SJ, et al. Current Medical Diagnosis & Treatment 2010. 49th ed. New York, N.Y.: McGraw Hill; 2010. http://www.accessmedicine.com/content.aspx?aID=2674&searchStr=laryngitis#2674. Accessed Feb. 9, 2010
- Rubin MA, et al. Pharyngitis, sinusitis, otitis, and other upper respiratory tract infections. In: Fauci AS, et al. Harrison's Online. 17th ed. New York, N.Y.: McGraw Hill; 2008. http://www.accessmedicine.com/content.aspx?aID=2883585&searchStr=laryngitis#2883585. Accessed Feb. 9, 2010.
- Knox MA. Common infections in children. In: South-Paul JE, et al. Current Diagnosis & Treatment in Family Medicine. 2nd ed. New York, N.Y.: McGraw Hill; 2008. http://www.accessmedicine.com/content.aspx?aID=3031411&searchStr=croup. Accessed Feb. 9, 2010
- Mehanna HM, et al. Fungal laryngitis in immunocompetent patients. The Journal of Laryngology & Otology. 2004;118:379.
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