Is that what causes it? I always thought it was due to a drop in blood pressure or something like that! Who would have guessed a 4chan post would actually result in me learning something new lol
Comment on Anon keeps it classy in the comments
empireOfLove2@lemmy.dbzer0.com 5 weeks ago
Hey that’s me!
Vagus nerve overstimulation or something, whenever I get needle poked or blood drawn I tend to pass out to varying degrees of badness.
MrJameGumb@lemmy.world 5 weeks ago
empireOfLove2@lemmy.dbzer0.com 5 weeks ago
Yup. I guess the medical term is “Vasovagal syncope” but the vagus nerve does a lot of stuff..
sp3tr4l@lemmy.zip 5 weeks ago
Its not the loss of blood circulating in your system that lowers your blood pressure. An average human has 4.5 to 5.5 L of blood, an average blood draw is like… 10 ml, 0.2% of all your blood.
The vasovagal response is somewhat common during blood draws, basically, its a stress/fear/anxiety response, your nervous system iniates it and then your heart rate slows and your blood vessels dilate, widen, and this makes your blood pressute drop… its not the actual blood loss itself causing your blood pressure to tank, its all the other parts of your circulatory system changing how they regulate your blood pressure.
Its pretty common to experience this effect mildly, and temporarily.
But… if you regularly feint from routine blood draws… that is actually potentially concerning, as it may indicate you are anemic, significantly malnourished or dehydrated, have circulatory system blockages, or just generally have significant hypotension, or have some other underlying problematic, very often treatable condition.
Again, routine, regular, every time you get a blood draw, you feint, completely black out?
Thats different than you get a bit woozy and then in 5 minutes you’re fine.
Ironically, you’ll need blood tests to check for a lot of the most common indicators of the most common things that cause routine feinting from a blood draw… you gotta get that bloodwork to start pinpointing root causes.
But it could also be that you just generally have very high stress levels, or some other mental condition.
Or it could be side effects from drugs you are on, including common SSRIs and other mental health drugs, actually contributing to your vasovagal response being so severe that you regularly feint during blood draws.
lars@lemmy.sdf.org 5 weeks ago
I wasn’t getting enough salt in my diet. Which is like winning the lottery.
Xenny@lemmy.world 5 weeks ago
I get it too. Sucks as a person who needs regular blood draws
FilthyShrooms@lemmy.world 5 weeks ago
Oof, I passed out last time I was donating blood. They hadn’t covered where the needle was sticking in my arm, and when I looked over at it, I felt lightheaded and passed out in the chair. Overall not a terrible time but I didn’t donate enough blood for it to count
sugar_in_your_tea@sh.itjust.works 5 weeks ago
Hopefully you got the health benefits of blood recycling.
rovingnothing29@lemmy.world 5 weeks ago
I thought you were the second anon at first.
bitwolf@sh.itjust.works 5 weeks ago
Similar condition, I have vasovagal syncope. If I hurt myself and get anxious about it I pass out.
Some feelings, like my vein moving, or my skin tearing deeply will send me to the stars.
SuzyQ@sh.itjust.works 5 weeks ago
Me too. I also get anxiety attacks over needles… Last time this happened I was in the ER anyways. I passed out, apparently seized up, they stuck an oxygen tube in my nose and I woke right back up. I remember being asked if I knew where I was and I said “no.” Time before that was when I got my second COVID shot at a drive through clinic… The nurse gave me the shot in my shoulder bone. Passed out in the car while we were waiting and ended up on the ambulance to go down the block to the hospital.
This has happened to me since I was a teenager. I just warn people that I might pass out.
ryedaft@sh.itjust.works 5 weeks ago
No, that’s Furina.
And the word you’re looking for is vasovagal syncope.