The Markwalder classification is used for the clinical categorization of patients with chronic subdural hematomas into five different grades and was published in 1981[^1].
Grade
Description
0
Patient neurologically normal
1
Patient awake and oriented, mild symptoms such as headaches. Absent or mild neurological symptoms such as reflex asymmetry, for example.
2
Patient sleepy, disoriented with variable neurological deficits such as hemiparesis, for example.
3
Patient stuporous, but responds to pain stimuli. Severe focal neurological deficits such as hemiplegia, for example.
4
Patient comatose. No motor response to painful stimuli. Decerebrate or decorticate posture.