| Summary: | <p>Herpes simplex encephalitis (HSE) is an acute central nervous system infection caused by herpes simplex virus (HSV). Early clinical manifestations mainly include fever, headache and unconsciousness; when progressing, psychiatric symptoms can occur. Death or serious neurological sequelae will happen if not treated. With the development of laboratory tests and imaging techniques, the early diagnosis of HSE is possible. Even though imaging with temporal lobe abnormal signal has the implication to HSE, the application of polymerase chain reaction (PCR) in detecting HSV DNA in cerebrospinal fluid is currently the "gold standard" to diagnose HSE. Once diagnosed, acyclovir must be given as soon as possible, as delayed treatment will result in a poor outcome.</p><p> </p><p>doi: 10.3969/j.issn.1672-6731.2014.08.003</p>
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