<unk>  is the infection of mastoid air cells in the process of temporal bone. It is mostly a complication of ear diseases such as acute otitis media and chronic otitis media, and it tends to occur in children. However after developments of antibiotics acute otitis media complications have decreased significantly.
Mastoiditis
Sinusitis  
Sinusitis
Rhinosinusitis
Labyrinthitis
Epiglottitis
Laryngitis
Adenoiditis