A 26-year-old male without any chronic disease was admitted to the hospital with fever, headache and diplopia. Neurological examination was normal and there were no signs and symptoms of meningeal irritation. On brain magnetic resonance imaging (MRI), a mild transient cytotoxic lesion (MERS-type 1) was observed in the splenial region of the corpus callosum. Mononuclear pleocytosis, increased protein level and HHV-7 DNA positivity were detected in the cerebrospinal fluid (CSF) examination. Clinical improvement was observed while receiving empirical acyclovir treatment for HSV-1 encephalitis with CSF findings. We found this case worth presenting because there was an HHV-7 encephalitis case with mild transient splenial lesion in an immunocompetent individual.
Keywords: Human Herpesvirus 7, Encephalitis, Corpus Callosum
