The larynx is that portion of the airway below the mouth and at the beginning of the trachea. It contains the vocal cords as well as the ligaments and cartilage that support the vocal cords and allow them to function. Inflammation of these tissues will lead to temporary dysfunction. This will change the pitch of the voice and lead to hoarseness. Outbreaks of laryngitis occur typically during epidemics of seasonal virus infections (late fall, winter, early spring).
Causes of Laryngitis
The most common cause of laryngitis is an acute inflammation of the larynx produced by a viral infection. Occasionally, bacterial infections can involve the upper portion of the trachea, or region of the vocal cords. Similarly, allergies can involve some or all of the passages of the airway. Excessive use of the voice can produce localized laryngitis. Disturbances of electrolyte-balance, especially low potassium, may cause muscle weakness. This can sometimes lead to weakness of the muscles involved in the vocal cords and hoarseness. Tumors can rarely involve the larynx and be initially mistaken for laryngitis. However, in this instance, the symptoms do not go away.
Signs and Symptoms of Laryngitis
Laryngitis produces fairly typical symptoms. They range in severity depending on the intensity of the infectious process. There is hoarseness and loss of the voice. Sore throat, tickling in the back of the throat, a sensation of a lump in the throat, mild fever, swallowing difficulty, and fatigue occur.
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Medical Content Last Updated on 07/12/2008
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