Encephalitis associated with human herpesvirus-7 infection in an immunocompetent adult

Adult Male 0301 basic medicine Roseolovirus Infections Case Report Herpesvirus 7, Human Infectious and parasitic diseases RC109-216 Immunocompetent adults Clinical significance HHV-7 CNS infection, Human herpesvirus-7 encephalitis, Immunocompetent adults Human herpesvirus-7 encephalitis 3. Good health 03 medical and health sciences Clinical significance HHV-7 CNS infection Humans Encephalitis, Viral Polyradiculopathy
DOI: 10.1186/s12985-017-0764-y Publication Date: 2017-05-25T14:12:11Z
ABSTRACT
Primary Human herpesvirus-7 (HHV-7) infection usually occurs during childhood and causes several clinical manifestations: mainly exanthem subitum (roseola infantum), followed by a lifelong latent state with possible reactivation in case of immunodeficiency. Nevertheless, some considerably different approaches exist regarding the natural history of HHV-7 and the possible consequences of HHV-7 infection in immunocompetent adults. In particular, little is known about its pathogenic role in central nervous system (CNS) disease in nonimmunosuppressed adults. Specifically, in case of encephalitis, it is important to distinguish between infectious encephalitis and postinfectious encephalomyelitis for the management of patients CASE PRESENTATION: We describe here a case of encephalitis associated to human herpesvirus-7 with associated polymyeloradiculopathy in an immunocompetent patient which may contribute to the delineation of the approach to a patient profile with a similar clinical presentation and evolution to those presented in the literature.This case may alert clinicians to consider this specific etiology in the differential diagnosis of encephalopathy in patients with suspected infectious encephalitis who do not respond to acyclovir or in patients who develop acute polymyeloradiculopathy, considering that HHV-7 may be a pathological factor and that a timely diagnosis is crucial for the early administration of specific treatment.
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