“…In the majority of instances of traumatic acute subdural hemorrhage, the forces involved are sizeable, at least in the young and physically robust, with typical scenarios including motor vehicle accidents, falls, assaults, sporting events, and industrial accidents (12). However, other nontraumatic causes have been described, including neoplasia (13), sepsis (14), coagulation disorders (15, 16), high altitude (17), intracranial hypotension (13), and of course extension of hemorrhage from another intracranial source—such as ruptured aneurysms, vascular malformations, and intracerebral bleeds. Some researchers, notably in the field of infantile neuropathology, have also suggested that blood may ooze directly from the dura in the setting of the combination of hypoxic brain damage, brain swelling, and elevated central venous pressure (5 –7, 9, 18)—though this is not without controversy.…”