Encephalitis and meningitis are inflammatory conditions. However, encephalitis is inflammation of the brain, while meningitis is inflammation of the membranes protecting the brain and spinal cord.
Meningitis involves inflammation of the tissues surrounding the brain and spinal cord and can stem from infectious or non-infectious causes, whereas the flu is caused exclusively by influenza viruses.
Aseptic meningitis is a type of meningitis caused by something other than bacteria, usually a virus. It causes the tissues covering your brain and spinal cord to become inflamed. Aseptic meningitis is ...