If you have ever stood up and immediately felt your heart racing, your head going foggy, your legs going weak, or like your body just shifted into emergency mode for no obvious reason, you are not imagining it. You are not anxious for no reason. You are not dramatic.
You might have POTS.
POTS stands for Postural Orthostatic Tachycardia Syndrome. It sounds clinical and intimidating but once you break it down it actually explains a lot.
Postural means related to body position. Orthostatic means upright. Tachycardia means fast heart rate. Syndrome means a group of symptoms that show up together.
Put it together and you get this: POTS is a condition where your body struggles to adjust to being upright and your heart rate rises too much as part of that struggle.
But it is more than just a fast heart rate.
What is actually happening in your body?
When anyone stands up gravity pulls blood downward into the legs and lower body. A healthy body corrects for this automatically. Blood vessels tighten, leg muscles help push blood back upward, heart rate adjusts slightly, and the whole process happens without you noticing any of it.
With POTS that correction does not happen efficiently. Blood can stay pooled in the lower body longer than it should. Less blood returns to the heart between beats. The heart compensates by beating faster to maintain blood flow to the brain.
That is why your heart rate spikes when you stand. Your heart is not randomly trying to scare you. It is working overtime to keep your brain supplied with blood when the rest of the system is not pulling its weight.
This also involves the autonomic nervous system, which controls everything your body does automatically. Heart rate, blood pressure, circulation, temperature regulation. When the autonomic nervous system is not working smoothly the effects show up in almost every part of how you feel day to day.
What POTS actually feels like
POTS symptoms are not subtle. They are the kind of thing that makes you feel like your body is unpredictable and exhausting to live in.
Common symptoms include heart racing or pounding when you stand up, dizziness or lightheadedness especially upright, extreme fatigue that does not go away with rest, brain fog that makes thinking feel slow and cloudy, shortness of breath during simple activities, nausea, shaking or trembling, feeling worse in heat, needing to lie down to feel better, and a sense of internal anxiety that does not match your emotional state.
That last one is important. POTS can feel exactly like anxiety. The racing heart, the shakiness, the tight chest, the adrenaline rush feeling. But the trigger is not your thoughts. The trigger is your body reacting to physical stress like standing up, getting too warm, or not having enough fluid in your system.
A lot of people with POTS get told it is anxiety for months or even years before getting a real answer. If that has happened to you, you are not alone and it is not your fault.
How POTS is diagnosed?
Medically POTS is usually diagnosed when heart rate increases by at least 30 beats per minute within 10 minutes of standing, without a significant drop in blood pressure. For teenagers the threshold is 40 beats per minute.
A simple way to check at home before seeing a doctor is to lie down for 5 minutes and check your heart rate. Then stand up, wait 2 minutes, and check again. If the difference is 30 beats or more and you feel symptomatic when upright that is worth bringing to a doctor.
The most common formal test is called a tilt table test where you are strapped to a table that moves from horizontal to upright while your heart rate and blood pressure are monitored. Not every doctor uses this test and not every POTS diagnosis requires it.
Who gets POTS
POTS is far more common than most people realize. It affects an estimated 1 to 3 million people in the United States alone. It is most common in women between the ages of 15 and 50 but it can affect anyone.
Many people develop POTS after a viral illness, which is why a large number of long COVID patients have been diagnosed with it. Others develop it after pregnancy, surgery, a period of extended bed rest, or significant physical deconditioning. Some people cannot identify a clear trigger at all.
Can POTS be treated?
Yes. POTS is manageable and for many people significantly improvable.
The most evidence backed approach combines increased fluid and salt intake, compression garments, and a structured exercise reconditioning program. Medications can also help manage symptoms for some people, particularly beta blockers and fludrocortisone, though medication alone is rarely enough without lifestyle changes alongside it.
The reconditioning piece is where most of the long term improvement comes from. Because deconditioning plays a significant role in maintaining POTS for many people, gradually rebuilding cardiovascular fitness through recumbent and seated exercise before progressing to upright movement can dramatically change how the body handles being upright over time.
Recovery is not instant and it is not the same for everyone. But it is possible. There are people who were completely bedbound with POTS who have rebuilt their capacity through consistent structured exercise and now live full active lives.
What to do if you think you have POTS
Start by tracking your symptoms. Note when they happen, what position you were in, how long they lasted, and what made them better or worse. That information is incredibly useful when talking to a doctor.
See a cardiologist, electrophysiologist, or autonomic specialist if you can. A general practitioner can diagnose POTS but specialists are more familiar with the condition and the range of treatment options available.
In the meantime focus on the basics. Drink more water than you think you need, add sodium to your diet, avoid standing still for long periods, move your legs when you are upright, and avoid heat when possible.
And know that you are not making this up. What you are feeling is real, it has a name, and there is a path forward.
If you are looking for a community of people who are actively working on POTS recovery through reconditioning and structured exercise, join POTS Recovery Club free here: https://www.skool.com/pots-recovery-club-8470/about