Subdural empyema

- Typically secondary to otorhinologic infections or head trauma/cranial surgery.

- Diagnosis:  MRI

- Condition usually requires urgent surgical drainage.

Viridans Group Streptococci
Streptococcus anginosus group
Anaerobes:

• Anaerobic Gram positive cocci
• Bacteroides fragilis
• Prevotella/Porphyromonas spp
• Fusobacterium spp

Post-neurosurgical/osteomyelitis

Also:

S. aureus

Cutibacterium acnes