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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Does Fainting While Getting The Blood Drawn Mean?

Are there any known causes of fainting while getting your blood drawn or any ways to prevent it? I fainted when they drew my blood at age nine, and ever since then I’m guaranteed to faint. I’m 17 now and I didn’t go to get my blood tested this year for fear of fainting (irrational, I know). However, I doubt it’s caused by a phobia. I fear the fainting, not the procedure, and I was not afraid of either the first time it happened. I do feel weird when I see things such as a video about heart attacks (which also caused me to black out) and hearing people discuss things such as the structure of a newborn’s heart (started to black out, and eventually fell down on the floor) Causes or Solutions? Thanks.
posted on Thu, 13 Mar 2014
Twitter Wed, 5 Nov 2014 Answered on
Twitter Thu, 6 Nov 2014 Last reviewed on
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HI
Well come to HCM
Fainting after the seeing the human blood even own blood, is not the disease and not the phobia (this could be wrongly applied term ) too, but this is physiological phenomenon could be consider as evolutionary instinct genetically constituted in some subject, which stimulate or irritate the vagus never and causes the vasovagal shock , and subject faint at the site of blood, hope this information helps, take care.
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What Does Fainting While Getting The Blood Drawn Mean?

HI Well come to HCM Fainting after the seeing the human blood even own blood, is not the disease and not the phobia (this could be wrongly applied term ) too, but this is physiological phenomenon could be consider as evolutionary instinct genetically constituted in some subject, which stimulate or irritate the vagus never and causes the vasovagal shock , and subject faint at the site of blood, hope this information helps, take care.