Hemorrhagic stroke (HS) is a major cause of death and disability worldwide, despite being less common, it presents more aggressively and leads to more severe sequelae than ischemic stroke. There are two types of HS: Intracerebral Hemorrhage (ICH) and Subarachnoid Hemorrhage (SAH), differing not only in the site of bleeding, but also in the mechanisms responsible for acute and subacute symptoms. This is a systematic review of databases in search of works of the last five years relating to the comprehension of both kinds of HS. Sixty two articles composed the direct findings of the recent literature and were further characterized to construct the pathophysiology in the order of events. The road to the understanding of the spontaneous HS pathophysiology is far from complete. Our findings show specific and individual results relating to the natural history of the disease of ICH and SAH, presenting common and different risk factors, distinct and similar clinical manifestations at onset or later days to weeks, and possible complications for both.

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Introduction: The Vascular Dementia (VaD) is an irreversible neurocognitive disorder related to cerebrovascular disorders. It is considered the second most common type of dementia after Alzheimer's disease. Methods: The references included reviews published in the last 5 years, found through a search on PubMed database using the terms "Vascular Dementia", "Clinical Diagnosis" and "Cerebrovascular Disease". The articles were selected by analyzing the title and the abstract. Results: The initial search found 2556 results.

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