Dengue meningoencephalitis in a child presenting with focal seizures.

We report a 9-year-old female child who presented with fever and focal seizures. The Cerebrospinal Fluid (CSF) analysis was compatible with viral meningoencephalitis and Reverse Transcriptase Polymerase Chain Reaction (RT-PCR) on same sample was positive for dengue virus RNA, serotype 2. The dengue IgM in blood sample was positive on the 8th day of the illness. This case demonstrates the emerging neurological manifestations of dengue infection and the first confirmed pediatric meningoencephalitis reported from Saudi Arabia. In areas where it does exist, dengue should be included in the differential diagnosis of cases of viral meningitis or meningoencephalitis.