Meningoencephalitis is a serious condition where both the brain and the protective membranes around it become inflamed at the same time. The membranes are called meninges, and the brain tissue itself is the encephalon. When both areas are involved, the illness tends to be more severe than meningitis or encephalitis alone. The inflammation disrupts normal brain function and can affect thinking, movement, and basic body control. The most common causes are infections. Viruses are the leading cause