Slide2：Acute rhinitis and acute tonsilitis may become involved secondarily.
Slide 3: Virus: Coxsackie virus, rhinovirus, adenovirus, influenza virus , parainfluenza virus so on.
Bacteria: streptococci,staphylococci and pneumococci mostly seen.
Invironmental factors:high temperature,dust,frog,stimulated gas, etc
Slide 4: * Exduation from blood vessels and infiltration of inflammatory cells.
Slide 10: *Usually a part of the upper respiroty chronic inflammation, commonly seen in adults.
Long course of diseases.
Slide 16: Soothing gargle may help relieve the symptoms.