Editing Macewen's sign

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'''Macewen's sign''' or '''Macewen sign''' ({{IPAc-en|m|ə|ˈ|k|j|uː|ə|n}} {{respell|mə|KEW|ən}}) is a sign used to help to diagnose [[hydrocephalus]]<ref>{{Cite journal|url=https://jamanetwork.com/journals/jamapediatrics/fullarticle/1173436|title=A CLINICAL CONSIDERATION OF MACEWEN'S SIGN: ESPECIALLY WITH REFERENCE TO ITS USE IN POLIOMYELITIS|first=Joseph G.|last=Regan|date=July 1, 1918|journal=American Journal of Diseases of Children|volume=16|issue=1|pages=13–22|via=jamanetwork.com|doi=10.1001/archpedi.1918.01910130020002}}</ref> (accumulation of excess [[cerebrospinal fluid]]) and brain [[abscess]]es. Tapping ([[percussion, medical|percussion]]) the skull near the junction of the [[frontal bone|frontal]], [[temporal bone|temporal]], and [[parietal bone|parietal]] bones will produce cracked pot sound. Positive test is indication of separated sutures. This is due to raised intracranial tension.{{cn|date=August 2021}}

The sign was discovered and described by [[William Macewen|Sir William Macewen]] (1848–1924), a surgeon and professor of the [[University of Glasgow]], [[Scotland]], who also described [[Macewen's operation]] for [[inguinal hernia]].{{cn|date=August 2021}}

'''McEwan's sign in alcohol intoxication''' is different: Pupils are contracted, but on external painful stimulation of the person (e.g. by pinching or slapping) causes pupil to dilate followed by slow constriction. It is suggestive of alcoholic coma.<ref>{{Cite web|url=http://www.doctoralerts.com/mcewans-sign/|title=McEwan’s Sign : Alcohol Poisoning & Intoxication|last=Choudhary|first=Dr Daya|date=2018-06-15|website=DoctorAlerts|language=en-US|access-date=2020-01-12}}</ref>

==References==
{{reflist}}

{{Eponymous medical signs for nervous system}}

{{DEFAULTSORT:Macewen's Sign}}
[[Category:Symptoms and signs: Nervous system]]


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