Editing Transient ischemic attack (section)

===TIA vis-à-vis mimics===

{| class="wikitable"
! Symptoms<ref name=pmid23062043/>
! % TIA mimics<ref name=pmid23062043/>
! % TIAs<ref name=pmid23062043/>
|-
| Unilateral paresis
| 29.1
| 58
|-
| Memory loss/cognitive impairment
| 18 to 26
| 2 to 12
|-
| Headache
| 14.6 to 23
| 2 to 36
|-
| Blurred vision
| 21.8
| 5.2
|-
| [[Dysarthria]]
| 12.7
| 20.6
|-
| [[Hemianopsia]]
| 3.6
| 3.6
|-
| [[Amaurosis fugax|Transient monocular blindness]]
| 0
| 6
|-
| Diplopia
| 0
| 4.8
|}

Non-focal symptoms such as amnesia, confusion, incoordination of limbs, unusual [[visual cortex|cortical]] visual symptoms (such as isolated bilateral blindness or bilateral positive visual phenomena), headaches and transient loss of consciousness are usually not associated with TIA,<ref name="Amarenco" /> however patient assessment is still needed. Public awareness on the need to seek a medical assessment for these non-focal symptoms is also low, and can result in a delay by patients to seek treatment<ref>Butler, Sonia & Crowfoot, Gary & Quain, Debbie & Davey, Andrew & Magin, Parker & Maguire, Jane. (2017). "Opening the Door to Funny Turns: A Constructivist Thematic Analysis of Patient Narratives after TIA". ''Public Health Research''. 7. 62–72.</ref>

Symptoms of TIAs can last on the order of minutes to one–two hours, but occasionally may last for a longer period of time.<ref>{{Cite web |title=Transient Ischemic Attack |url=https://www.strokeassociation.org/STROKEORG/AboutStroke/TypesofStroke/TIA/Transient-Ischemic-Attack-TIA_UCM_492003_SubHomePage.jsp |url-status=dead |access-date=2017-12-10 |archive-date=2019-01-13 |archive-url=https://web.archive.org/web/20190113203755/https://www.strokeassociation.org/STROKEORG/AboutStroke/TypesofStroke/TIA/Transient-Ischemic-Attack-TIA_UCM_492003_SubHomePage.jsp }}</ref><ref name=pmid19423857/> TIA is defined as ischemic events in the brain that last less than 24 hours. Given the variation in duration of symptoms, this definition holds less significance.<ref name=pmid19423857/> A pooled study of 808 patients with TIAs from 10 hospitals showed that 60% lasted less than one hour, 71% lasted less than two hours, and 14% lasted greater than six hours.<ref>{{cite journal | vauthors = Shah SH, Saver JL, Kidwell CS, Albers GW, Rothwell PM, Ay H, Koroshetz WJ, Inatomi Y, Uchino M, Demchuk AM, Coutts SB, Purroy F, Alvarez-Sabin JS, Sander D, Sander K, Restrepo L, Wityk RJ, Marx JJ, Easton JD | year = 2007 | title = A multicenter pooled, patient-level data analysis of diffusion-weighted MRI in TIA patients | journal = Stroke | volume = 38 | issue = 2 | page = 463 |s2cid=78309677 }} in {{cite journal |title=Abstracts From the 2007 International Stroke Conference |journal=Stroke |date=February 2007 |volume=38 |issue=2 |pages=453–607 |doi=10.1161/str.38.2.453 |doi-access=free }}</ref> Importantly, patients with symptoms that last more than one hour are more likely to have permanent neurologic damage, making prompt diagnosis and treatment important to maximize recovery.<ref name=pmid19423857/>