Nontraumatic<unk>  most commonly results from hypertensive damage to blood vessel walls e.g.: - hypertension - eclampsia - drug abuse, but it also may be due to autoregulatory dysfunction with excessive cerebral blood flow e.g.: - reperfusion injury - hemorrhagic transformation - cold exposure - rupture of an aneurysm or arteriovenous malformation (AVM) - arteriopathy (e.g. cerebral amyloid angiopathy, moyamoya) - altered hemostasis (e.g. thrombolysis, anticoagulation, bleeding diathesis) - hemorrhagic necrosis (e.g. tumor, infection) - venous outflow obstruction (e.g. cerebral venous sinus thrombosis). Nonpenetrating and penetrating cranial trauma can also be common causes of intracerebral hemorrhage.
Intraparenchymal hemorrhage
Brain herniation
Pseudosubarachnoid hemorrhage
Epidural hematoma
Subdural empyema
Cerebral contusion
Hemicrania continua
Splinter hemorrhage