POTS or "Just Anxiety"? Why Diagnosis So Often Takes Years

The heart races the moment you stand up. Vision greys out for a second, the room starts to spin, the hands tremble. Many people who experience this hear a similar sentence from their doctor: "That is probably anxiety." For people with postural orthostatic tachycardia syndrome (POTS), that sentence is often the beginning of a long, frustrating road - not the end of the search for an explanation. This article takes a closer look: why is POTS so often mistaken for an anxiety disorder, how long does diagnosis actually take on average, and what distinguishes one from the other?

Why the confusion with anxiety happens so often

At first glance, the symptoms of POTS and of an anxiety or panic disorder overlap considerably: a fast heartbeat, trembling, sweating, a sense of unreality or of impending fainting. Because anxiety disorders are better known and more present in medical training than dysautonomias, attributing the symptoms to anxiety is the obvious step for many clinicians. There is also a practical problem: vital signs are usually measured while sitting or lying down - exactly the position in which POTS shows almost nothing. Only the change to standing makes the pattern visible.

Specialists who work intensively on autonomic disorders now state explicitly that POTS and related autonomic conditions are not purely psychological or "functional" illnesses, but distinct, measurable disturbances of circulatory regulation. Stress can amplify symptoms, but it is not the cause of the underlying mechanism.

The numbers behind the long wait

Several surveys have examined how long the road to the correct diagnosis actually is. A survey by Dysautonomia International among more than 700 people affected found an average diagnostic delay of 5 years and 11 months for POTS patients. Only a quarter receive the diagnosis within the first year. 50% had to travel more than 160 kilometres from home to receive POTS-related medical care.

The role of psychiatric misdiagnosis along the way is particularly striking. Before the POTS diagnosis, 59% of patients were told by a physician that their symptoms were "all in their head". 69% had previously been diagnosed with an anxiety disorder. Research paints a different picture: peer-reviewed studies show that people with POTS are no more anxious than the general population. The frequent attribution to anxiety therefore reflects diagnostic difficulty rather than an actual psychological cause.

More recent surveys confirm that little has changed. Newer analyses put the median at about two years, while the mean - pulled upward by particularly long individual cases - is considerably higher; a relevant share waited more than ten years for the right diagnosis. A difference by sex is also noticeable: women, who make up the majority of those affected, wait longer on average than men for a correct classification.

What separates POTS from an anxiety disorder

One central distinguishing feature is the trigger: POTS symptoms typically appear on standing up or after standing for a while and improve markedly when lying down - regardless of whether a stressful situation is present. Anxiety symptoms, by contrast, are usually tied to thoughts, situations or inner tension, and not primarily to body position. Anyone who notices that a racing heart and dizziness occur above all on changing position, and ease quickly on lying down, has an important observation to bring to a medical consultation.

There is more: POTS is not a single uniform diagnosis but can have different underlying mechanisms, which differ slightly in symptoms and triggers. This complexity is a further reason why the condition does not fit neatly into common diagnostic schemes and is therefore often overlooked.

A standard instrument for making this objective is the active stand test or the tilt table examination, in which heart rate and blood pressure are recorded over several minutes lying down and then standing. How such a test proceeds and what it can indicate can be prepared calmly in advance - for example with a structured overview of the stand test.

What helps when POTS is suspected

Anyone who has suffered for a longer period from a racing heart, dizziness or exhaustion on standing, and has the impression of not being taken seriously, can often make the path to a diagnosis easier: with a simple symptom diary recording when and in which body position the complaints occur, and by asking specifically for an active stand test or a tilt table examination. This information can help structure the conversation with medical professionals - it does not replace a specialist assessment.

One point deserves emphasis: neither this article nor mypacing can make a diagnosis or tell an anxiety disorder apart from POTS. Both conditions can also exist at the same time, and only a thorough medical examination - where appropriate by cardiology or neurology with experience in autonomic disorders - can provide clarity. If you are already in treatment and want to cope with the daily ups and downs of exertion and recovery, you will find further background on adjacent topics in our knowledge section.