脑炎是指脑实质受病原体侵袭导致的炎症性病变,是脑组织炎性病变的总称。可由不同病因(如病毒、感染中毒等)引起。脑炎可以发病于不同性别和年龄,多为急性或亚急性。临床上以高热、头痛、呕吐、昏迷、惊厥等症状为其特征,大多伴有脑脊液成分的改变。绝大数的病因是病毒,也可由细菌、霉菌、螺旋体、立克次氏体、寄生虫等感染引起,有的可能是变态反应性疾病,如急性播散性脑脊髓炎。应根据不同病因进行防治。脑炎是种常见病,也 Encephalitis refers to the brain parenchyma caused by the invasion of pathogens inflammatory lesions, is a general term for brain tissue inflammatory lesions. Can be caused by different causes (such as viruses, infections, etc.). Encephalitis can occur in different genders and ages, mostly acute or subacute. Clinically, fever, headache, vomiting, coma, convulsions and other symptoms are characterized by changes in cerebrospinal fluid composition. The vast majority of the cause of the virus, but also by bacteria, mold, spirochetes, rickettsia, parasites and other infections caused, and some may be allergic diseases, such as acute disseminated encephalomyelitis. Should be based on different causes of prevention and treatment. Encephalitis is a common disease, too