Usually complications of sinusitis (especially frontal, ethmoidal, or sphenoidal) or otitis media
Other causes include other ear infections, cranial trauma or surgery, or rarely bacteremia
In children <5yo, cause is typically bacterial meningitis
Typically due to epidural abscess extending into subdural space to cause<unk> 
Other causes include other ear infections, cranial trauma or surgery, or rarely bacteremia
In children <5yo, cause is typically bacterial meningitis
Subdural empyema
CVA
Brain abscess
Meningitis, encephalitis
Epidural abscess 
Malignancy
Subdural hemorrhage
Intracranial hemorrhage