TYPES
a)Acute laryngitis
b)Chronic laryngitis
a)Acute laryngitis: It is the acute inflammation of larynx which last less than a few days and leads to
oedema of laryngeal mucosa and underlying structure.
Most common cause is “rhino virus” others by adenovirus,measels and mumps para influenza virus.
BACTERIAL INFECTION such as diptheria .
Overuse of voice e.g. yelling , exposure to noxious that causes cold.