The selective destruction of temporal and frontal lobe structures by herpes simplex encephalitis has been explained as a consequence of the proximity of those regions to the point of entry of the virus in the encephalon, through olfactory pathways or meningeal branches of the trigeminal nerves. An alternative hypothesis is presented: that the encephalitis is due to a special affinity of the her...

Herpes simplex encephalitis (HSE) is an acute or subacute sporadic encephalitic illness. It has a predilection for the medial temporal lobes, the orbital surface of the frontal lobes, and subcortical structures such as the hippocampus. Sequelae may include seizures and neuropsychological impairment. The present case study involves a 66-year old, retired, Caucasian male diagnosed with herpes sim...

In this thesis studies of two types of viral CNS-infections are presented; influenza related encephalitis and herpes simplex encephalitis (HSE). Influenza related encephalitis/encephalopathy has been reported to increase both in incidence and severity in the Japanese population the last decade. We wanted to assess the incidence of the disease in Sweden and evaluate the clinical picture of the d...

The FilmArray meningitis/encephalitis (ME) panel is a novel syndromic, nucleic acid amplification test for diagnosis of acute meningitis and encephalitis. Emerging data on its performance are concerning for false-positive results. We present a case of tuberculous meningitis misdiagnosed as herpes simplex virus-1 encephalitis with the FilmArray ME panel. Strategies to mitigate erroneous results ...

BACKGROUND Large health care databases are a valuable source of infectious disease epidemiology if diagnoses are valid. The aim of this study was to investigate the accuracy of the recorded diagnosis coding of herpes simplex encephalitis (HSE) in the Danish National Patient Registry (DNPR). METHODS The DNPR was used to identify all hospitalized patients, aged ≥15 years, with a first-time diag...

Equine herpesvirus 1 replicated in the brains of 2-week-old mice but did not produce fatal encephalitis; it thus simulated the majority of cases of herpes simplex encephalitis in man. This replication was not inhibited by iododeoxyuridine, although in tissue cultures the equine and human viruses were equally susceptible. The continued use of iododeoxyuridine for human encephalitis should be ser...

BACKGROUND If they are to be replicable, MRI volume measurements require explicit definitions of structures and of criteria for delineating these structures on MRI. Previously published volumes in healthy subjects show considerable differences in measurements across different studies, including a fourfold variation in estimates of hippocampal volume. Previous neuroimaging reports in patients wi...

Encephalitis is an acute infl ammation of the meninges and cerebral tissue. Although the specifi c etiological agent is not identifi ed in many instances, clinical and research experience indicate that viruses are the responsible pathogens for most infections. Enteroviruses cause more than 80% of all cases (1, 2). The other frequent viral causes are arboviruses and Herpes viruses. Herpes simple...

The presence of periodic EEG complexes in patients with an acute viral encephalitis is generally held to suggest that infection is due to herpes simplex. We now report a patient with clinical and laboratory findings of infectious mononucleosis, and neurologic involvement manifested by lymphocyte meningitis, coma, seizures, aphasia, hemiparesis and hemianopsia. Serial EEGs showed periodic, predo...

BACKGROUND Seizures are common in encephalitis but there is paucity of comprehensive studies evaluating predictors of seizures. AIM To evaluate the frequency and predictors of seizures in encephalitis patients and its effect on outcome. METHODS In a prospective hospital based study, the patients with encephalitis were evaluated clinically and presence of seizure, its type and duration were ...