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www.merckmanuals.com/home/heart-and-blood-vessel-disorders/symptoms-of-heart-and-blood-vessel-disorders/fainting

Fainting (syncope) is a sudden, brief loss of consciousness during which the person falls to the ground or slumps in a chair followed by a return to consciousness. The person is motionless and limp and usually has cool legs and arms, a weak pulse, and shallow breathing. Some people feel light-headed or dizzy before they ...

www.advisory.com/daily-briefing/2016/05/02/why-some-people-faint

May 2, 2016 ... If you find yourself in a cold sweat just thinking about your annual flu shot, you can blame evolution, Cynthia Murray writes in The Conversation.

www.popsugar.com/fitness/Why-Sight-Blood-Makes-You-Feel-Faint-3061135

Apr 21, 2009 ... You Asked: Why Does the Sight of Blood Make Me Feel Faint? April 21, 2009 ... What is causing this, and can I do anything about it? — No Love ... Fainting occurs when there is a sudden decrease in the flow of blood to the brain, causing people to feel dizzy, get pale in the face, and pass out. This reaction ...

www.fearof.net/fear-of-blood-phobia-hemophobia

The fear of germs or Mysophobia can also trigger Hemophobia since the individual is afraid of 'catching germs' from someone else's blood. Fear of blood is also linked to the fear of death or Thanatophobia. The sight of blood often causes the individual to faint; s/he may fear embarrassing oneself by fainting, which is actually ...

psychology.stackexchange.com/questions/5487/why-does-the-the-sight-of-gore-causes-nausea-vomiting-and-or-fainting

Nausea and fainting might not protect us directly from physical attack, but it certainly discourages us from cutting ourselves (or others) open...and we've always been a danger to ourselves in that regard. As for blood and vomit, they may transmit biohazards of all sorts. Purging our own contents is one way to ...

www.verywellmind.com/fear-of-blood-hemophobia-causes-and-symptoms-2671861

Jun 20, 2017 ... It can lead to low blood pressure and even fainting. ... pressure and heart rate. The sudden drop can lead to fainting, a relatively common response to the sight of blood. ... In those who experience mysophobia or fear of germs, the sight of someone else's blood can trigger fears of catching a disease. In some ...

heartwell.com/fainting-how-serious

Feb 24, 2014 ... WHY do some people pass out at the sight of blood? Why do some faint for no apparent reason? After suffering a fall to unconsciousness, patients have questions such as: Why did it happen? Is passing out a symptom of something serious? Patients are usually reassured to know that in many cases ...

www.saga.co.uk/magazine/health-wellbeing/conditions/fainting-causes

Mar 2, 2015 ... Experiencing a sudden loss of consciousness, or seeing it happen to someone else, is alarming. Find out what the causes ... There are known triggers - emotional stress, pain, being in a frightening or unpleasant situation, being too hot, and the sight of blood can all cause fainting. Other types of fainting ...

sites.psu.edu/siowfa15/2015/09/18/why-do-people-faint

Sep 18, 2015 ... But it seems the most common that people faint at the sight of blood, getting s shot/ blood taken, etc. I get queasy at the sight of blood, but for the most part I can handle it, and for the most part I can handle the pain that comes with getting a shot. But what makes me get lightheaded and faint is the fact that I ...