There are 3<unk>  system for subdural<unk> . Subdural<unk>  may be classified according to symptom onset and duration into 3 subtypes including acute, subacute, and chronic, according to midline shift and thickness into 4 subtypes, and based on imaging findings into 6 subtypes.
Subdural hematoma classification
Subarachnoid hemorrhage classification
Hemorrhagic stroke classification
Intracerebral hemorrhage classification
Ischemic stroke classification
Subdural empyema classification
Subdural hematoma pathophysiology
Gliomatosis cerebri classification