Hemorrhagic stroke is classified based on their underlying pathology. Some causes of hemorrhagic stroke are
hypertensive hemorrhage, ruptured
aneurysm, ruptured
AV fistula, transformation of prior ischemic infarction, and drug-induced
bleeding. They result in tissue injury by causing compression of tissue from an expanding
hematoma or hematomas. In addition, the pressure may lead to a loss of blood supply to affected tissue with resulting
infarction, and the blood released by brain hemorrhage appears to have direct toxic effects on brain tissue and
vasculature.
Inflammation contributes to the
secondary brain injury after hemorrhage.