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The short answer
POTS is not officially classed as an autoimmune disease, but it behaves like one in several ways and may be autoimmune in some people.It mostly affects women, often starts after an infection, and comes with a coexisting autoimmune condition in roughly 1 in 5 patients. Researchers have also found unusual antibodies against the body's own receptors in many people with POTS. But those antibodies also show up in healthy people, the one randomized drug trial of an immune treatment was negative, and no blood test can confirm an autoimmune cause. So the honest answer is that POTS has an autoimmune flavour without yet earning the label, and the useful step is checking for treatable autoimmune conditions rather than paying for an unproven antibody panel.
If you have POTS, you have almost certainly seen it called an autoimmune disease, maybe alongside ads for antibody panels that promise to prove it. It is a reasonable thing to wonder, especially if your POTS started after a virus or runs alongside something like thyroid disease. The short answer is that POTS is not officially an autoimmune disease, but it carries several hallmarks of one, and it may well be autoimmune in some people. The evidence is genuinely mixed, and it is worth understanding before you spend money on a test or chase a treatment.
“Autoimmune” is not a vibe or a label you can self-apply. It means something specific, and POTS sits in an honest grey zone next to it. Let’s walk through what would make POTS autoimmune, the real evidence pointing that way, the equally real evidence holding it back, and what is actually worth doing about it.
What would make POTS “autoimmune”?
An autoimmune disease is one where the immune system mistakenly attacks the body’s own tissue. To call something autoimmune with confidence, researchers usually want to see a few things line up: a specific self-targeting antibody or immune cell, evidence that it actually causes the damage or dysfunction, and often a response to treatments that calm the immune system.
The leading theory for autoimmune POTS is that an antibody attacks or jams the receptors the autonomic nervous system uses to control heart rate and blood vessels, especially the adrenergic receptors (which respond to adrenaline and noradrenaline) and the muscarinic receptors (which respond to acetylcholine). If an antibody partly blocks those receptors, the body may overcompensate with surges of adrenaline, which fits the racing heart and the wired feeling many people with POTS describe (Vernino and Hall, 2024).
That is a tidy, plausible story. The question is how much of it the evidence supports.
The evidence that points toward autoimmunity
Several features of POTS are exactly what you would expect from an autoimmune condition.
It mostly affects women. The large majority of autoimmune diseases fall more heavily on women, and so does POTS, where the large majority of patients are women. That pattern alone does not prove anything, but it is consistent with an immune mechanism.
It often starts after an infection. POTS frequently appears after a trigger, and a viral illness is one of the most common (Aboseif et al., 2023). In the largest patient survey to date, among people who could name an event that preceded their POTS, an infection was the most commonly reported trigger (Shaw et al., 2019). A post-infectious onset is a classic setup for autoimmunity, in which the immune response to a virus turns against the body. It is also why long COVID has produced so many new POTS diagnoses, a link we cover in what actually causes long COVID.
It travels with other autoimmune diseases. This is one of the strongest clues. Roughly 16 to 20 percent of people with POTS have a coexisting autoimmune disease, far more than the general population (Aboseif et al., 2023). People with POTS are also more likely to carry antinuclear antibodies, a general marker of autoimmune activity: one study found them in 25 percent of POTS patients compared with 16 percent of the general population (Blitshteyn, 2015).
And researchers have found self-targeting antibodies. Several studies report antibodies against the autonomic receptors in people with POTS. In one, most of the POTS patients studied carried at least one elevated antibody against a G-protein coupled receptor, most often the adrenergic and muscarinic types (Gunning et al., 2019). On its face, that is the smoking gun an autoimmune theory needs.
The evidence that holds it back
Here is where the tidy story runs into trouble, and why POTS has not been reclassified as autoimmune.
The antibodies are not specific to POTS. When a 2022 study measured the same panel of receptor antibodies using standardized laboratory methods, it found no meaningful difference between people with POTS and healthy controls, and the antibodies could not reliably tell the two groups apart (Hall et al., 2022). The same antibodies also show up in Sjögren syndrome, orthostatic hypotension, high blood pressure and pregnancy complications, so finding them tells you little on its own (Aboseif et al., 2023).
The one randomized treatment trial was negative. If POTS were driven by a rogue antibody, a treatment that clears antibodies should help. The only randomized controlled trial to test this, called iSTAND, gave intravenous immunoglobulin (IVIG) to people with suspected autoimmune POTS and compared it against an albumin infusion that controlled for the fluid effect. IVIG was no better than the control, and both groups improved somewhat (Vernino et al., 2024). The trial was small, so it cannot rule out a modest benefit, but it clearly did not deliver the result an autoimmune model would predict.
No causation has been shown. Even where antibodies are present, no study has shown they actually cause the POTS, rather than being a bystander of a stressed immune system. Expert reviews are careful on this point: the autoimmune hypothesis is promising but unproven (Pena et al., 2024).
Putting the two sides together gives a balanced ledger rather than a verdict.
| Points toward autoimmune | Holds it back |
|---|---|
| Mostly affects women, like most autoimmune disease | Female predominance is suggestive, not specific |
| Often starts after a viral infection | Infection can injure nerves without autoimmunity |
| 16 to 20% have a coexisting autoimmune disease | Most people with POTS have no autoimmune disease |
| Receptor antibodies found in many patients | Same antibodies appear in healthy people |
| A plausible receptor-blocking mechanism | No study shows the antibodies cause POTS |
| Some case reports improve with immune therapy | The one randomized trial (IVIG) was negative |
Are the autoantibody tests worth it?
Because the receptor-antibody idea is so appealing, several companies sell blood panels that measure adrenergic and muscarinic antibodies and market them as a way to confirm “autoimmune POTS.” Based on the current evidence, these are not worth your money for diagnosis.
The problem is specificity. A test is only useful if a positive result means something, and the 2022 standardized study showed these antibodies do not separate POTS from healthy people (Hall et al., 2022). A result that is just as likely in a healthy person cannot tell you that your POTS is autoimmune. Expert reviews conclude that this testing is still experimental and offers no clear clinical value (Aboseif et al., 2023). It will not change your diagnosis, it is not covered as standard care, and a positive or negative result should not drive a treatment decision on its own.
What is actually worth checking
The useful version of the autoimmune question is not “can I prove my POTS is autoimmune” but “do I have a treatable autoimmune condition hiding alongside it.” That matters, because finding and treating a coexisting autoimmune disease often improves POTS symptoms too (Aboseif et al., 2023). These are ordinary, validated tests your doctor can order.
| Worth asking about | Why | Clue that raises the odds |
|---|---|---|
| Thyroid panel (TSH, thyroid antibodies) | Hashimoto thyroiditis is the most common autoimmune link in POTS | Fatigue, weight or temperature changes, family thyroid disease |
| Celiac screen | Celiac disease is more common in POTS | Gut symptoms, bloating, reflux, nutrient deficiencies |
| Sjögren evaluation | Sjögren syndrome overlaps with POTS and dysautonomia | Persistent dry eyes and dry mouth |
| ANA (antinuclear antibody) | A general marker of autoimmune activity, more common in POTS | Joint pain, rashes, other systemic symptoms |
If you have the dry eyes and dry mouth of Sjögren, or the gut symptoms and fatigue that can come with thyroid disease, those are worth flagging specifically. We go deeper in Sjögren’s, dysautonomia and POTS and thyroid, HRV and POTS. The autoimmune tendency also seems to run in families, which we cover in is POTS genetic.
None of this replaces a proper diagnosis. POTS itself is diagnosed from your symptoms and a sustained heart-rate rise on standing, which we walk through in how POTS is diagnosed, and the autoimmune question sits on top of that, not instead of it.
The bottom line
POTS is not officially an autoimmune disease, and on today’s evidence that caution is correct. It clearly has an autoimmune flavour: it falls mostly on women, it often follows an infection, it keeps company with autoimmune conditions in about 1 in 5 people, and researchers keep finding self-targeting antibodies in patients. But those antibodies also appear in healthy people, no study has shown they cause POTS, and the one randomized trial of an immune treatment came up empty. So the fair description is autoimmune-associated, and possibly autoimmune in a subset of people we cannot yet identify with a test. The practical move is not an unvalidated antibody panel but a conversation with your clinician about screening for the treatable autoimmune conditions that travel with POTS, because those are the ones where a diagnosis can actually change how you feel.
Sources
- Aboseif A, Bireley JD, Li Y, Polston D, Abbatemarco JR. Autoimmunity and postural orthostatic tachycardia syndrome: Implications in diagnosis and management. Cleveland Clinic Journal of Medicine, 2023.
- Pena C, Moustafa A, Mohamed AR, Grubb B. Autoimmunity in Syndromes of Orthostatic Intolerance: An Updated Review. Journal of Personalized Medicine, 2024.
- Hall J, Bourne KM, Vernino S, et al. Detection of G Protein-Coupled Receptor Autoantibodies in Postural Orthostatic Tachycardia Syndrome Using Standard Methodology. Circulation, 2022.
- Gunning WT III, Kvale H, Kramer PM, Karabin BL, Grubb BP. Postural Orthostatic Tachycardia Syndrome Is Associated With Elevated G-Protein Coupled Receptor Autoantibodies. Journal of the American Heart Association, 2019.
- Blitshteyn S. Autoimmune markers and autoimmune disorders in patients with postural tachycardia syndrome (POTS). Lupus, 2015.
- Vernino S, et al. Randomized controlled trial of intravenous immunoglobulin for autoimmune postural orthostatic tachycardia syndrome (iSTAND). Clinical Autonomic Research, 2024.
- Vernino S, Hall J. G protein-coupled receptors related to autoimmunity in postural orthostatic tachycardia syndrome. Immunological Medicine, 2024.
Questions people also ask about this
Is POTS officially an autoimmune disease?+
No. POTS is not currently classified as an autoimmune disease. It is defined by its symptoms and a sustained heart-rate rise on standing, not by immune markers. That said, many researchers suspect an autoimmune process drives POTS in at least some people, because POTS mostly affects women, often begins after an infection, frequently comes with another autoimmune condition, and is linked to unusual antibodies. None of that is proof, so the fair description is autoimmune-associated rather than autoimmune.
Can a blood test tell me if my POTS is autoimmune?+
No validated blood test can confirm that POTS is autoimmune or diagnose autoimmune POTS. Companies sell panels for antibodies against adrenergic and muscarinic receptors, but a 2022 study using standard methods found those antibodies did not reliably separate people with POTS from healthy controls. Expert reviews conclude the testing has no clear clinical use yet. What is worth checking are standard, treatable autoimmune conditions like thyroid disease, celiac disease and Sjögren syndrome.
What autoimmune diseases are linked to POTS?+
Roughly 16 to 20 percent of people with POTS have a coexisting autoimmune disease. The most common is Hashimoto thyroiditis, present in about 6 percent, followed by celiac disease and Sjögren syndrome at about 3 percent each, and rheumatoid arthritis and lupus at about 2 percent each. People with POTS are also more likely to carry antinuclear antibodies than the general population. Finding and treating one of these conditions often helps the POTS symptoms too.
Does IVIG or other immune treatment cure autoimmune POTS?+
There is not enough evidence to say immune treatment works for POTS. The only randomized controlled trial, called iSTAND, gave intravenous immunoglobulin to people with suspected autoimmune POTS and found it was no better than an albumin control infusion. Some case reports describe improvement, but case reports cannot prove a treatment works. Any decision about immune therapy belongs with a specialist, and it remains investigational, not standard care.
My POTS started after a virus. Does that make it autoimmune?+
Not necessarily. A viral trigger is one of the most common ways POTS begins, and it fits an autoimmune model in which an infection sets off a confused immune response. But an infection can injure the nervous system in other ways too, such as small-fiber nerve damage, and a post-viral onset on its own does not prove an autoimmune cause. It does make POTS worth taking seriously, and worth a careful workup with your clinician.
Written by
Austin Spaeth
Austin builds Autonomic, a private, offline journal for tracking autonomic recovery. He writes about HRV, POTS, dysautonomia and post-viral illness for the people living it, turning messy day-to-day data into signals you can actually act on.
