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A cerebral hemorrhage (also spelled haemorrhage; also known as a cerebral hematoma) is a type of intracranial hemorrhage (intracranial hematoma) that occurs within the brain tissue. It is alternatively called intracerebral hemorrhage. It can be caused by brain trauma, or it can occur spontaneously in hemorrhagic stroke. Non-traumatic intracerebral hemorrhage is a spontaneous bleeding into the brain tissue. Non-traumatic can refer to increased exertion, tension or stress. A cerebral hemorrhage is an intra-axial hemorrhage; that is, it occurs within, rather than outside, the brain tissue. The other category of intracranial hemorrhage is extra-axial hemorrhage, such as epidural, subdural, and subarachnoid hematomas, which all occur within the skull but outside of the brain tissue. There are two main kinds of intra-axial hemorrhages: intraparenchymal hemorrhage and intraventricular hemorrhages. As with other types of hemorrhages within the skull, intraparenchymal bleeds are a serious medical emergency because they can increase intracranial pressure, which if left untreated can lead to coma and death. The mortality rate for intraparenchymal bleeds is over 40%.〔Sanders MJ and McKenna K. 2001. Mosby's Paramedic Textbook, 2nd revised Ed. Chapter 22, "Head and Facial Trauma." Mosby.〕 The abbreviation ICH, somewhat ambiguous, has been used for any combination of ''intracranial/intracerebral'' + ''hemorrhage/hematoma/hypertension''. ==Signs and symptoms== Patients with intraparenchymal bleeds have symptoms that correspond to the functions controlled by the area of the brain that is damaged by the bleed.〔Vinas FC and Pilitsis J. 2006. ("Penetrating Head Trauma." ) Emedicine.com.〕 Other symptoms include those that indicate a rise in intracranial pressure caused by a large mass putting pressure on the brain.〔 Intracerebral hemorrhages are often misdiagnosed as subarachnoid hemorrhages due to the similarity in symptoms and signs. A severe headache followed by vomiting is one of the more common symptoms of intracerebral hemorrhage. Some patients may also go into a coma before the bleed is noticed. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cerebral hemorrhage」の詳細全文を読む スポンサード リンク
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