<unk>  is an inflammation of the larynx. It causes a hoarse voice or the complete loss of the voice because of irritation to the vocal folds (vocal cords).<unk>  is categorized as acute if it lasts less than a few days. Otherwise, it is categorized as chronic and may last over 3 weeks.
Laryngitis
Pharyngitis
Sinusitis  
Sinusitis
Tonsillitis
Rhinosinusitis
Croup
Mastoiditis