POTS is a real autonomic disorder, not anxiety.
Postural orthostatic tachycardia syndrome (POTS) is one of the most under-recognized invisible illnesses, especially in young women. Here's what it is and what helps.
What POTS actually is
Postural orthostatic tachycardia syndrome (POTS) is a form of dysautonomia — a malfunction of the autonomic nervous system, the part that regulates heart rate, blood pressure, digestion, temperature, and other things you don't consciously control. The diagnostic feature: standing up causes the heart rate to increase by at least 30 bpm (40 in adolescents) within 10 minutes, without a corresponding drop in blood pressure.
It usually presents as a constellation of symptoms: dizziness on standing, fatigue, brain fog, exercise intolerance, racing heart, headaches, GI issues, sleep disturbance, and sometimes near-fainting or fainting. Many people have it for years before being diagnosed. About 70% of patients are female, and onset commonly occurs in adolescence or young adulthood.
Why it gets misdiagnosed as anxiety
The autonomic nervous system is also the system that activates during anxiety. Both POTS and anxiety can produce racing heart, sweating, lightheadedness, and shortness of breath. The difference is that in POTS the trigger is positional or physical (standing, heat, eating, exertion), while in anxiety it is emotional or cognitive.
Because the symptoms overlap, and because POTS predominantly affects young women — a demographic that is statistically more likely to have their physical symptoms attributed to psychiatric causes — many POTS patients are told for years that they have generalized anxiety disorder before finally being correctly diagnosed. The Dysautonomia International registry data shows the average time from symptom onset to diagnosis is about 5–6 years.
What is happening in the body
POTS isn't fully understood, and there are multiple subtypes (neuropathic, hyperadrenergic, hypovolemic, autoimmune-associated). Common contributing factors include reduced blood volume, abnormal venous pooling in the legs and abdomen, autonomic neuropathy, and dysregulation of norepinephrine release.
Many cases follow a viral illness. Long COVID has dramatically increased the number of recognized POTS cases. The Ehlers-Danlos community has long noted the overlap between hypermobility and POTS — many hEDS patients also have POTS, and the connective-tissue laxity may contribute to abnormal venous pooling.
what people get wrong
wrongPOTS is just anxiety with a fancy name.
closerPOTS has a measurable diagnostic criterion (heart rate change on standing) that anxiety does not. They can co-occur but they are not the same condition.
wrongIf you can walk around, it can't be that bad.
closerPOTS severity is measured in symptoms over time, not in observable disability. Many POTS patients can walk for ten minutes and then be in bed for the rest of the day.
wrongYou'll grow out of it.
closerSome adolescents do experience improvement in their twenties. Many do not. Telling a patient they will grow out of it can delay treatment that could have helped now.
wrongYou just need to exercise more.
closerStandard upright exercise (running, walking) often worsens POTS. Recumbent exercise programs (CHOP protocol, Levine protocol, swimming, recumbent cycling) are evidence-based and start at very low intensity.
wrongThere's no treatment.
closerThere is no cure but multiple effective treatments: salt and fluid loading, compression garments, recumbent exercise programs, beta-blockers, ivabradine, midodrine, fludrocortisone, and others depending on subtype.
what actually helps
- Increased fluid intake (3+ liters/day) and sodium (often 8–10g/day, with medical guidance).
- Compression garments: waist-high (not just knee-high) or abdominal binders are most effective for venous pooling.
- Recumbent exercise programs (CHOP, Levine, modified Dallas) — start in horizontal positions, build toward upright slowly over months.
- Avoiding triggers: prolonged standing, hot showers, heavy carb meals, alcohol, deconditioning periods.
- Sleeping with the head of the bed raised (4–6 inches): helps the body retain volume.
- A clinician (cardiologist, neurologist, or autonomic specialist) who has experience with POTS — many general practitioners are not familiar.