Editing Migraine (section)

===Aura phase===
{| class="wikitable" style = "float: right; margin-left:15px; text-align:center"
|-
|[[Image:Fortifikation (Migräne).jpg|150px|Enhancements reminiscent of a zigzag fort structure]]||[[File:Negatives Skotom (Brandenburger Tor Blaue Stunde) 1.jpg|150px|Negative scotoma, loss of awareness of local structures]]
|-
|[[File:Positives Skotom (Brandenburger Tor Blaue Stunde) 1.jpg|150px|Positive scotoma, local perception of additional structures]]||[[File:Gesichtsfeldausfall (Brandenburger Tor Blaue Stunde) 1.jpg|150px|Mostly one-sided loss of perception]]
|}

[[aura (symptom)|Aura]] is a transient focal neurological phenomenon that occurs before or during the headache.<ref name=Amin2009/> Aura appears gradually over a number of minutes (usually occurring over 5–60 minutes) and generally lasts less than 60&nbsp;minutes.<ref name=Tint2010/><ref name="Ashina">{{cite journal | vauthors = Ashina M | title = Migraine | journal = The New England Journal of Medicine | volume = 383 | issue = 19 | pages = 1866–1876 | date = November 2020 | pmid = 33211930 | doi = 10.1056/NEJMra1915327 | s2cid = 227078662 }}</ref> Symptoms can be visual, sensory or motoric in nature, and many people experience more than one.<ref name = "Cutrer_2006" /> Visual effects occur most frequently: they occur in up to 99% of cases and in more than 50% of cases are not accompanied by sensory or motor effects.<ref name = "Cutrer_2006" /> If any symptom remains after 60 minutes, the state is known as [[Persistent aura without infarction|persistent aura]].<ref>{{cite journal | vauthors = Viana M, Sances G, Linde M, Nappi G, Khaliq F, Goadsby PJ, Tassorelli C | title = Prolonged migraine aura: new insights from a prospective diary-aided study | journal = The Journal of Headache and Pain | volume = 19 | issue = 1 | pages = 77 | date = August 2018 | pmid = 30171359 | pmc = 6119171 | doi = 10.1186/s10194-018-0910-y | doi-access = free | title-link = doi }}</ref>

Visual disturbances often consist of a [[scintillating scotoma]] (an area of partial alteration in the [[field of vision]] which flickers and may interfere with a person's ability to read or drive).<ref name=Amin2009/> These typically start near the center of vision and then spread out to the sides with zigzagging lines which have been described as looking like fortifications or walls of a castle.<ref name = "Cutrer_2006" /> Usually the lines are in black and white but some people also see colored lines.<ref name = "Cutrer_2006" /> Some people lose part of their field of vision known as [[hemianopsia]] while others experience blurring.<ref name = "Cutrer_2006" />

Sensory aura are the second most common type; they occur in 30–40% of people with auras.<ref name = "Cutrer_2006" /> Often a feeling of pins-and-needles begins on one side in the hand and arm and spreads to the nose–mouth area on the same side.<ref name = "Cutrer_2006" /> Numbness usually occurs after the tingling has passed with a loss of [[proprioceptive|position sense]].<ref name = "Cutrer_2006" /> Other symptoms of the aura phase can include speech or language disturbances, [[vertigo|world spinning]], and less commonly motor problems.<ref name = "Cutrer_2006" /> Motor symptoms indicate that this is a [[hemiplegic migraine]], and weakness often lasts longer than one hour unlike other auras.<ref name = "Cutrer_2006" /> [[Auditory hallucination]]s or [[delusion]]s have also been described.<ref>{{cite book|vauthors = Slap, GB|title=Adolescent medicine|date=2008|publisher=Mosby/Elsevier|location=Philadelphia, PA|isbn=9780323040730|page=105|url=https://books.google.com/books?id=s4UGU7SQTQgC&pg=PA105|url-status=live|archive-url=https://web.archive.org/web/20170313025509/https://books.google.com/books?id=s4UGU7SQTQgC&pg=PA105|archive-date=13 March 2017}}</ref>