Viral encephalitis pathophysiology: Difference between revisions
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===Limbic System Encephalitis=== | ===Limbic System Encephalitis=== | ||
In a small number of cases, called [[limbic encephalitis]], the pathogens responsible for encephalitis attack primarily the [[limbic system]] (a collection of structures at the base of the brain responsible for basic [[autonomic]] functions). | In a small number of cases, called [[limbic encephalitis]], the pathogens responsible for encephalitis attack primarily the [[limbic system]] (a collection of structures at the base of the brain responsible for basic [[autonomic]] functions). | ||
==Gallery== | |||
<gallery> | |||
Image: Flavivirus03.jpeg| Diagram illustrates the methods by which the arbovirus, St. Louis encephalitis virus (SLEV) reproduces and amplifies itself in urban avian populations, and is subsequently transmitted to dead end hosts including humans and other mammals by a number of Culex spp. mosquitoes. <SMALL><SMALL>''[http://phil.cdc.gov/phil/home.asp From Public Health Image Library (PHIL).] ''<ref name=PHIL> {{Cite web | title = Public Health Image Library (PHIL) | url = http://phil.cdc.gov/phil/home.asp}}</ref></SMALL></SMALL> | |||
Image: Flavivirus02.jpeg| Diagram illustrates the methods by which the arbovirus, Japanese encephalitis virus (JEV) reproduces and amplifies itself in the avian populations, and is subsequently transmitted to human beings as the dead end host. <SMALL><SMALL>''[http://phil.cdc.gov/phil/home.asp From Public Health Image Library (PHIL).] ''<ref name=PHIL> {{Cite web | title = Public Health Image Library (PHIL) | url = http://phil.cdc.gov/phil/home.asp}}</ref></SMALL></SMALL> | |||
Image: Flavivirus01.jpeg| Diagram illustrates the methods by which the arbovirus, St. Louis encephalitis virus (SLEV) reproduces and amplifies itself in rural avian populations, and is subsequently transmitted to dead end hosts including humans and other mammals by the Culex tarsalis mosquito. <SMALL><SMALL>''[http://phil.cdc.gov/phil/home.asp From Public Health Image Library (PHIL).] ''<ref name=PHIL> {{Cite web | title = Public Health Image Library (PHIL) | url = http://phil.cdc.gov/phil/home.asp}}</ref></SMALL></SMALL> | |||
</gallery> | |||
==References== | ==References== |
Revision as of 19:06, 10 June 2015
Template:Encephalitis Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Encephalitis is an acute inflammation of the brain, commonly caused by a viral infection. Sometimes, encephalitis can result from a bacterial infection, such as bacterial meningitis, or it may be a complication of other infectious diseases like rabies (viral) or syphilis (bacterial). Certain parasitic or protozoal infestations, such as toxoplasmosis, malaria, or primary amoebic meningoencephalitis, can also cause encephalitis in people with compromised immune systems. Brain damage occurs as the inflamed brain pushes against the skull, and can lead to death.
Pathophysiology
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Encephalitis Lethargica
Encephalitis lethargica is an atypical form of encephalitis which caused an epidemic from 1917 to 1928. There have only been a small number of isolated cases since, though in recent years a few patients have shown very similar symptoms. The cause is now thought to be either a bacterial agent or an autoimmune response following infection.
Limbic System Encephalitis
In a small number of cases, called limbic encephalitis, the pathogens responsible for encephalitis attack primarily the limbic system (a collection of structures at the base of the brain responsible for basic autonomic functions).
Gallery
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Diagram illustrates the methods by which the arbovirus, St. Louis encephalitis virus (SLEV) reproduces and amplifies itself in urban avian populations, and is subsequently transmitted to dead end hosts including humans and other mammals by a number of Culex spp. mosquitoes. From Public Health Image Library (PHIL). [1]
-
Diagram illustrates the methods by which the arbovirus, Japanese encephalitis virus (JEV) reproduces and amplifies itself in the avian populations, and is subsequently transmitted to human beings as the dead end host. From Public Health Image Library (PHIL). [1]
-
Diagram illustrates the methods by which the arbovirus, St. Louis encephalitis virus (SLEV) reproduces and amplifies itself in rural avian populations, and is subsequently transmitted to dead end hosts including humans and other mammals by the Culex tarsalis mosquito. From Public Health Image Library (PHIL). [1]