Encephalomyelitis is inflammation of the brain and spinal cord. Various types of encephalomyelitis include: Acute disseminated encephalomyelitis or postinfectious encephalomyelitis, a demyelinating disease of the brain and spinal cord, possibly triggered by viral infection. Encephalomyelitis disseminata, a synonym for multiple sclerosis. AntiMOG associated encephalomyelitis, one of the underlying conditions for the phenotype neuromyelitis optica and in general all the spectrum of MOG autoantibody-associated demyelinating diseases. Eastern equine encephalitis, Japanese encephalitis, Venezuelan equine encephalitis, and Western equine encephalitis: a group of viral illnesses that can affect horses and humans; collectively termed Equine encephalitis. Experimental autoimmune encephalomyelitis (EAE), an animal model of brain inflammation. Progressive encephalomyelitis with rigidity and myoclonus (PERM) – A kind of stiff person syndrome. AIDS-related encephalomyelitis, caused by opportunistic Human T-lymphotropic virus type III (HTLV-III) infection..