Editing Encephalitis (section)

==Signs and symptoms==
Adults with encephalitis present with acute onset of [[fever]], [[headache]], [[confusion]], and sometimes seizures. Younger children or [[infants]] may present with irritability, [[poor appetite]] and fever.<ref>{{Cite web |title=Symptoms of encephalitis |url=http://www.nhs.uk/Conditions/Encephalitis/Pages/Symptoms.aspx |url-status=live |archive-url=https://web.archive.org/web/20150105142821/http://www.nhs.uk/Conditions/Encephalitis/Pages/Symptoms.aspx |archive-date=5 January 2015 |access-date=5 January 2015 |website=NHS}}</ref> [[Neurological]] examinations usually reveal a [[drowsy]] or confused person. [[Stiff neck]], due to the irritation of the [[meninges]] covering the brain, indicates that the patient has either [[meningitis]] or [[meningoencephalitis]].<ref>{{Cite book |url=https://books.google.com/books?id=KI5p3pADvSsC&q=meningoencephalitis+symptoms+stiff+neck&pg=PA90 |title=Meningitis |vauthors=Shmaefsky B, Babcock H |date=2010-01-01 |publisher=Infobase Publishing |isbn=978-1-4381-3216-7 |archive-url=https://web.archive.org/web/20151030224553/https://books.google.com/books?id=KI5p3pADvSsC&pg=PA90&dq=meningoencephalitis+symptoms+stiff+neck&hl=en&sa=X&ved=0CCsQ6AEwAGoVChMIk7_kzqCSxwIVQYsNCh2nzwvd#v=onepage&q=meningoencephalitis%2520symptoms%2520stiff%2520neck&f=false |archive-date=2015-10-30 |url-status=live}}</ref>

===Limbic encephalitis===
{{Main|Limbic encephalitis}}

Limbic encephalitis refers to inflammatory disease confined to the [[limbic system]] of the brain.  The clinical presentation often includes [[disorientation]], [[disinhibition]], [[memory loss]], [[seizures]], and behavioral anomalies. [[MRI]] imaging reveals T2 [[hyperintensity]] in the structures of the medial temporal lobes, and in some cases, other limbic structures.  Some cases of limbic encephalitis are of autoimmune origin.<ref>{{Cite book |last=Larner |first=A. J. |url=https://books.google.com/books?id=hO_lWEDsJYMC&q=limbic+encephalitis+definition&pg=PA156 |title=Neuropsychological Neurology: The Neurocognitive Impairments of Neurological Disorders |date=2013-05-02 |publisher=Cambridge University Press |isbn=978-1-107-60760-6 |archive-url=https://web.archive.org/web/20151030055159/https://books.google.com/books?id=hO_lWEDsJYMC&pg=PA156&dq=limbic+encephalitis+definition&hl=en&sa=X&ved=0CCIQ6AEwAWoVChMIxouQj-2RxwIVBaKACh1J3w-x#v=onepage&q=limbic%2520encephalitis%2520definition&f=false |archive-date=2015-10-30 |url-status=live}}</ref>

===Encephalitis lethargica===
{{main|Encephalitis lethargica}}

[[Encephalitis lethargica]] is identified by high fever, [[headache]], delayed physical response, and [[lethargy]]. Individuals can exhibit upper body [[weakness]], [[muscular pain]]s, and [[tremor]]s, though the cause of encephalitis lethargica is not currently known. From 1917 to 1928, an epidemic of encephalitis [[lethargica]] occurred worldwide.<ref>{{NINDS|encephalitis-lethargica|Encephalitis Lethargica}}</ref>