Address airway protection
Antibiotics similar to those used for brain abscess: e.g. cefotaxime, ceftriaxone, metronidazole, vancomycin
In children, cover also for bacterial meningitis
Emergent neurosurgery consult for drainage
In children, cover also for bacterial meningitis
Subdural empyema
CVA
Brain abscess
Meningitis, encephalitis
Epidural abscess 
Malignancy
Subdural hemorrhage
Intracranial hemorrhage