👉 Cerebrospinal meningitis (CSM) is a severe form of inflammation that occurs in the brain and spinal cord. It can result from an infection, which is caused by bacteria or viruses, or from a viral infection, which is caused by a virus. The primary cause of CSM is the meningovascular syndrome, which causes inflammation around the brain and spinal cord. Symptoms include fever, headache, neck stiffness, pain, numbness, weakness, confusion, and seizures. Treatment