What is Danger triangle of the face?
[[File:Danger triangle of the face diagram.jpg|thumb|The '''danger triangle of the face''']] The '''danger triangle of the face''' is a [[triangle]] with two corners at both corners of the mouth and one corner in the middle of the nose between the [[eyes]]. The way the blood flows to the human nose is special, so it is possible (but very unlikely) for infections to spread directly to the brain from a cut, scratch or a popped pimple. Almost all people have valves in the veins of the face.<ref>{{cite journal | pmid = 20491800 | doi=10.1111/j.1442-9071.2010.02325.x | volume=38 | issue=5 | title=Ophthalmic and facial veins are not valveless |date=July 2010 | author=Zhang J, Stringer MD | journal=Clin. Experiment. Ophthalmol. | pages=502–10| s2cid=45698367 }}</ref> But even with one-way valves, blood flow between the facial vein and cavernous sinus can spread infection from the face. It is the direction of blood flow that is important. Infection may possibly lead to cavernous sinus thrombosis, meningitis or brain abscess. == References == <references/> ==Other websites== * {{cite web |url=http://www.nhs.uk/conditions/Cavernous-sinus-thrombosis/Pages/Introduction.aspx?url=Pages/what-is-it.aspx |title=Cavernous sinus thrombosis: Introduction |publisher=[[National Health Service]] |date=10 February 2006 |access-date=1 September 2012 |archive-date=3 March 2016 |archive-url=https://web.archive.org/web/20160303184440/http://www.nhs.uk/conditions/Cavernous-sinus-thrombosis/Pages/Introduction.aspx?url=Pages/what-is-it.aspx |url-status=dead }} * {{cite web |url=http://www.drpaulose.com/ear/ent-pediatric-children/nasal-abscess-in-danger-area-of-face|title= Nasal Abscess in Danger Area of Face |date= 18 June 2010 |access-date=8 April 2011}} {{Use dmy dates|date=May 2019}} [[Category:Face]]