Encephalitis is a viral inflammation of the brain. While some infections are mild, with few if any specific symptoms, others can be deadly. Early symptoms often include headaches, fever, and nausea. If the disease progresses, the person may suffer seizures, paralysis, mental confusion, and coma. Often the disease is accompanied by viral meningitis. Mosquitoes carry some of the most dangerous types of encephalitis, including equine encephalitis, West Nile encephalitis, and St. Louis encephalitis. In other cases, encephalitis develops as a secondary complication of other viral diseases, including chickenpox, herpes, mumps, polio, and rubella. Treatment depends on the type and severity of the...
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