Meningitis refers to inflammation of the meninges, which are the membranes that enclose the human brain, as well as the spinal cord. Meningitis will occur when the fluid surrounding the meninges is infected and can be caused by certain bacteria, viruses, or funguses. In the United States, most cases of meningitis caused by a viral infection. Viral meningitis will be less severe, when compared to the other forms, and can be treated at home. The bacterial and fungal infections would require prolonged hospitalization.Here is a detailed guide on the various forms meningitis can take, and a further understanding of how it should be treated.