larynx , causing hoarseness.
Simple laryngitis usually occurs with infections such as the common cold . Other causes include inhalation of irritants. The larynx's lining becomes swollen and secretes mucus. In chronic laryngitis, caused by excessive smoking, drinking, or vocal-cord use, the larynx is dry and has polyps . Other types are caused by diphtheria spreading from the upper throat, tuberculosis bacteria spreading from the lungs, and advanced {{link=syphilis">syphilis . The last can produce severe scarring and permanent hoarseness.