An inflammatory process involving the brain (encephalitis) and meninges (meningitis), most often produced by pathogenic organisms which invade the central nervous system, and occasionally by toxins, autoimmune disorders, and other conditions.
Inflammation of the meninges and the brain.
Inflammation of the brain and its membranous coverings (the meninges) caused by infection, as with the mumps virus or Brucella (the bacterium causing brucellosis). Brucellosis may also involve the spinal cord, producing myelitis with paralysis of both legs, sometimes called meningomyelitis.
Infection of the membranes, or meninges, of the brain and the underlying brain matter. In practically all cases of meningitis there is some involvement of the underlying brain and, when this involvement is considerable, the term meningoencephalitis is used. Mostly it is caused by viruses.
Swelling of the brain and its surrounding membranes (meninges), typically due to a viral infection.
Inflammation of the brain and its protective layers.