Voice changes sometimes follow an upper respiratory infection lasting up to two weeks. Typically the upper respiratory infection or cold causes swelling of the vocal cords and changes their vibration resulting in an abnormal voice. Reduced voice use (voice rest) typically improves the voice after an upper respiratory infection, cold, or bronchitis. If voice does not return to its normal characteristics and capabilities within two to four weeks after a cold, a medical evaluation by an ear, nose, and throat specialist is recommended. A throat examination after a change in the voice lasting longer than one month is especially important for smokers. (Note: A change in voice is one of the first and most important symptoms of throat cancer. Early detection significantly increases the effectiveness of treatment.)
