腦出血是指腦組織(英語:Intraparenchymal hemorrhage)、腦室或者兩者同時突然出血。它是一種顱內出血和中風疾病。當患者腦出血時可能會伴隨有頭痛、輕偏癱、嘔吐、癲癇發作、意識水平下降(英語:Altered level of consciousness)和頸部僵硬、發熱等症狀。通常症狀會隨著時間的推移而惡化。
^ 4.0 4.1Naidich, Thomas P.; Castillo, Mauricio; Cha, Soonmee; Smirniotopoulos, James G. Imaging of the Brain, Expert Radiology Series,1: Imaging of the Brain. Elsevier Health Sciences. 2012: 387. ISBN 978-1416050094. (原始內容存檔於2016-10-02) (英語).
^默沙東診療手冊. 腦出血. [2022-04-26]. (原始內容存檔於2022-10-02).
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