POTs and Flared Symptoms After Blood Drawn or Injury

Having POTS symptoms flare after having blood drawn could also be a result of decreased blood volume, depending on how much is taken.

Since developing POTS, I've started fainting when getting blood drawn if I don't lay down during it. Doctors have insisted on saying it's a pain/sight of blood thing that alot of people experience, but I know it's not. Makes sense that losing blood volume when u already don't have "enough" would trigger POTS. I've had times where without looking at the needle, my vision literally starts getting blurry the second they start drawing blood out of my arm

in that case, I would bet that a large part of it is blood volume issue. Losing 2 vials of blood isn't enough to give most people symptoms, but your brain with pots can easily go into panic mode... "uh oh we're losing blood, better boost the pulse & bp" when you have barely lost any blood. You don't have to share this with me/everyone, but it might be good to consider if your period also triggers your pots. That would be a good way to tell if the trigger is losing blood In general

YES! Even with very little blood drawn, my heart rate skyrockets and I feel absolutely awful for the rest of the day.

This makes perfect sense to me. Fainting at the sight of injury is called vasovagal syncope. It is the same process that happens when POTS patients faint (or come close to it). your brain is "glitching" and not sending the right instructions to your heart on how to beat. So if you have a fainting episode from this, or close to it, that can definitely trigger your brain to "glitch" more and flare the POTS. Additionally, emotional stress is another trigger for flares. Simply being upset from getting blood drawn, or been hurt, or that you fainted, can easily trigger a flare that could last hours to days. I am NOT saying "you're too emotional" or that it's your fault at all- there is just a VERY strong connection between your emotions and your vagus nerve (which controls your organs). This connection between emotion and vagus nerve/organ control is what causes instincts, gut feelings, and "butterflies"

Is you salt intake good? Remember you need electrolytes especially with pots what I recommend is also managing stress! Pots had to do with the autonomic nervous system pots usually develops when a super stressful event has occurred

I haven't had that issue, but I could see why it'd happen. I'd see if drinking lots of fluids beforehand and eating something with salt helps, since that tends to relieve pots sympathetically from my experience. Also make sure you are getting enough vitamins and electrolytes before and after. If anything it might be a stress response that causes flair ups.