[A classification of virus-related neurological disease]

Virus-related neurological diseases (VRNDS) are classified according to, (1) the site of main pathologic changes, (2) the type of cells infected with (parasitized by) pathogenic viruses, (3) the species of causative viruses. In the acutenesis of the development of clinical manifections and (5) the length of latency (period between infection and the onset of the illness). VRNDs were classified into meningitides, encephalitides, myelitides and neuritides. The VRNDs in which nerve cells (neurons, neuroglial cells or both) are parasitized by pathogenic viruses can be called neuroinfective viral neurological diseases. The VRDs in which nerve cells can be called non neuro-infective neurological viral disease. VRNDs were classified into those by Papova viruses, those by Herpes viruses, those by Picornaviruses, those by Toga viruses, those by Flaviviruses, those by Paramyxoviruses, those by Rhabdoviruses, those by Arenaviruses, those by Buniaviruses and those by Retroviruses. VRNDs may develop acutely, subacutely on chronically. There are VRNDs that can be called progressive because their course is progressive and their outcome is fatal. Some VRNDs develop soon after primary infection and other VRNDs develop long after primary infection on reactivation of the virus.