Laryngitis: inflammation of the vocal cords inflicted by a virus, a bacteria or misuse of the voice.  Laryngitis is the most common condition and is often a complication of what seemed to have started as a simple cold. Repeated contact with smoke, acid reflux and chemicals can also be held responsible for laryngitis.  It is very important to show special care for the voice under attack because the swollen vocal cords constantly irritating one another might lead to unwanted tension and consequently develop longer-term disorders such as vocal nodules, polyp or cysts.  

Click on the links below for examples:
http://www.entusa.com/laryngitis.htm
http://www.entusa.com/laryngitis_2.htm