Postural Orthostatic Tachycardia Syndrome (POTS) is a form of dysautonomia, meaning it affects the autonomic nervous system. The autonomic nervous system helps regulate functions you do not consciously control, such as heart rate, blood pressure, temperature regulation, sweating and digestion.
In POTS, the body has difficulty adjusting to being upright. When you stand (or move from lying to sitting, then to standing), blood can pool in the lower body and the brain may temporarily receive less blood flow than it needs. To compensate, the heart rate rises more than expected. This can trigger symptoms such as dizziness, palpitations, nausea, shakiness, fatigue, and “brain fog”.
POTS can affect people of any age, but it is most commonly diagnosed in women and often begins in adolescence or early adulthood. Symptoms can fluctuate day to day and are commonly worsened by heat, dehydration, illness, stress, prolonged standing and rapid position changes.
Physiotherapy for POTS is a key part of management. A physiotherapist can help you build tolerance to upright activity, improve cardiovascular fitness and leg strength, reduce symptom flare-ups during daily tasks, and guide a safe, graded return to exercise. Physiotherapy is often paired with medical assessment and management to rule out other causes of orthostatic intolerance and to determine whether strategies such as increased fluids, increased salt or medications are appropriate.
Key Facts
- POTS is defined as symptoms with standing plus a sustained heart rate increase of at least 30 beats per minute in adults (or 40 beats per minute in adolescents) within 10 minutes of standing, in the absence of orthostatic hypotension. 🔗
- POTS is a multi-system syndrome most often seen in young women, diagnosed using orthostatic symptoms and heart rate criteria after excluding other causes. 🔗
- Exercise training is recommended as a first-line non-pharmacological strategy in POTS and can improve cardiovascular responses and symptom burden when progressed appropriately. 🔗
Risk Factors
- Female sex, with many diagnoses occurring in adolescence to early adulthood.
- Recent viral illness or a prolonged period of reduced activity and deconditioning.
- Hypermobility syndromes (including hypermobile Ehlers-Danlos Syndrome).
- Low fluid intake, low salt intake, or recurrent dehydration.
- Coexisting conditions such as migraine, autoimmune disease, mast cell activation disorders, or small fibre neuropathy.
- Medications that lower blood pressure or worsen orthostatic symptoms (your doctor can advise).
Symptoms
- Rapid heart rate when standing, commonly a rise of at least 30 beats per minute in adults or 40 beats per minute in adolescents within 10 minutes.
- Light-headedness, dizziness, or feeling faint, especially after standing up.
- Palpitations, chest discomfort, or feeling the heart pounding.
- Fatigue that feels disproportionate to effort and can be disabling.
- Brain fog, difficulty concentrating, slower thinking or memory lapses.
- Exercise intolerance, particularly with upright exercise or rapid transitions.
- Nausea, bloating, abdominal discomfort, or reduced appetite.
- Headaches or migraine-like symptoms, sometimes worse upright.
- Shakiness, tremor, sweating changes, cold hands or feet.
- Fainting or near-fainting episodes (syncope or presyncope) in some people.
Aggravating Factors
- Prolonged standing (queues, showers, cooking, waiting for public transport).
- Heat exposure (hot weather, hot showers, saunas) and dehydration.
- Rapid posture changes (lying to standing quickly) or bending and straightening repeatedly.
- Large meals (especially high carbohydrate meals) which can divert blood to the gut.
- Infections, viral illness, high stress periods, poor sleep or overexertion.
Causes
POTS is considered a syndrome rather than a single disease. That means it can have different underlying drivers, and more than one may apply in the same person. Broadly, POTS involves difficulty maintaining blood flow and stable autonomic responses when upright. Several mechanisms are commonly discussed:
Autonomic nervous system dysregulation: The body may overactivate the sympathetic (“fight or flight”) response with standing, driving tachycardia and symptoms. The parasympathetic (“rest and digest”) system may not counterbalance effectively.
Low blood volume (hypovolaemia): Some people with POTS have reduced circulating blood volume or reduced ability to retain sodium and fluid. With less volume available, the heart rate rises to maintain circulation.
Impaired blood vessel constriction and blood pooling: Blood vessels in the legs and abdomen may not tighten efficiently when upright. Blood can pool in the lower body, reducing return to the heart and circulation to the brain.
Post-viral or inflammatory triggers: POTS can develop after a viral illness in some people. This may relate to immune activation, autonomic changes, reduced activity during illness, and a cycle of deconditioning.
Associated conditions: POTS may overlap with hypermobility syndromes (including hypermobile Ehlers-Danlos Syndrome), small fibre neuropathy, mast cell activation disorders, and chronic fatigue syndromes. This does not mean everyone with POTS has these conditions, but the overlap is clinically relevant for assessment and management planning.
Deconditioning: Reduced physical activity, bed rest, or a long period of symptom avoidance can reduce cardiovascular fitness and leg muscle pump effectiveness. This can worsen upright symptoms. Physiotherapy addresses this factor directly through graded reconditioning.
How Is It Diagnosed?
POTS is diagnosed through a combination of symptoms, heart rate changes with upright posture, and exclusion of other causes. A common diagnostic approach is a 10-minute active stand test (measuring heart rate and blood pressure lying down, then while standing) or a tilt table test in specialist settings.
Diagnostic criteria typically include symptoms of orthostatic intolerance (such as dizziness, palpitations, fatigue, tremor, nausea or brain fog) plus a sustained heart rate increase of at least 30 beats per minute in adults (or 40 beats per minute in adolescents) within 10 minutes of standing, without significant orthostatic hypotension. Symptoms are generally present for several months and should not be explained by acute dehydration, blood loss, untreated anaemia, uncontrolled thyroid disease, or other medical conditions.
Physiotherapists do not diagnose POTS, but physiotherapists often identify patterns consistent with orthostatic intolerance during assessment. This is particularly relevant if a person presents with dizziness, fatigue, exercise intolerance, or symptoms that worsen upright and improve when lying down. In these cases, your physiotherapist may recommend medical review for formal testing and diagnosis.
Investigations & Imaging
- 10-minute active stand test
- Measures heart rate and blood pressure from lying to standing and can demonstrate the heart rate criteria for POTS.
- Tilt table test
- Specialist test that assesses heart rate and blood pressure responses to controlled upright positioning.
- ECG and, where indicated, Holter monitoring
- Assesses rhythm and rules out other cardiac causes of palpitations or tachycardia.
- Blood tests (e.g., full blood count, iron studies, thyroid function, electrolytes)
- Helps rule out contributors such as anaemia, thyroid dysfunction, or metabolic causes of symptoms.
- Echocardiogram (if clinically indicated)
- Assesses heart structure and function if there are red flags or concerning cardiac features.
Grading / Classification
- Primary POTS
- No single underlying cause is identified, but common drivers may include autonomic dysregulation, hypovolaemia and deconditioning.
- Secondary POTS
- Orthostatic tachycardia occurs in association with another condition such as hypermobility syndromes, autoimmune disease, small fibre neuropathy, mast cell activation disorders, or post-viral syndromes.
- Hyperadrenergic features
- Some people experience prominent tremor, anxiety-like surges, sweating changes and marked palpitations with standing, reflecting increased sympathetic activation.
- Hypovolaemic features
- Some people have low blood volume and benefit from medically guided salt and fluid strategies plus graded reconditioning.
- Neuropathic features
- Some people have impaired constriction of blood vessels in the legs, contributing to blood pooling and upright symptoms.
Physiotherapy Management
POTS rehabilitation is usually best managed with a multidisciplinary plan that may include a GP, cardiologist or autonomic specialist, dietitian, psychologist (when needed), and a physiotherapist experienced with graded reconditioning. Physiotherapy focuses on improving upright tolerance, reducing symptom flares during daily life, and building long-term capacity without triggering post-exertional symptom worsening.
For many people, the key is not “pushing through” symptoms. It is building a repeatable program that improves fitness and leg muscle pump function while respecting the nervous system’s current limits.
Exercise
POTS physiotherapy exercises usually start in positions that reduce symptom provocation. Many people with POTS tolerate recumbent or semi-recumbent exercise better than upright exercise early on. A physiotherapist may begin with a short duration and low intensity program and progress gradually over weeks to months.
Common starting points include a recumbent bike, rowing machine (as tolerated), Pilates-style supine strengthening, or water-based exercise in a cool pool (with caution and supervision if dizziness is significant). The focus is on consistent exposure rather than high intensity.
Strength training is typically introduced early, particularly for large lower-limb muscle groups (glutes, quadriceps, calves) because stronger leg muscles help push blood back toward the heart when standing. Strength work is often performed in lying, seated, or supported positions at first.
A graded plan usually progresses through phases: (1) recumbent cardio and supported strength, (2) seated and semi-upright training, (3) short bouts of upright cardio and functional training, and (4) return to preferred sport or gym routines. Progression is guided by symptoms, heart rate response, recovery time and flare frequency.
If you have coexisting hypermobility, your physiotherapist may emphasise joint control and stability, avoid excessive stretching, and build strength through mid-range positions to reduce joint pain and injury risk while you improve fitness.
Activity Modification
Activity modification aims to reduce symptom spikes while keeping you engaged in life. Your physiotherapist may help you identify the highest-trigger activities, then modify how and when you do them. This might include sitting for tasks that are usually done standing (food prep, showering), breaking chores into short blocks, and using a gradual “lying to sitting to standing” routine rather than standing quickly.
Because heat and dehydration commonly worsen symptoms, strategies may include scheduling exercise in cooler parts of the day, using cooling aids, and adjusting plans on hot days. Large meals can also worsen symptoms for some people, so timing of exercise and upright tasks around meals may matter.
Return to work or study can be planned in stages, sometimes using a graded exposure approach to upright tolerance. Physiotherapists can also advise on workstation set-up and micro-breaks that reduce prolonged static standing.
Postural Retraining
Postural retraining in POTS is less about “standing up straight” and more about improving upright tolerance safely. Physiotherapists teach techniques to reduce blood pooling and support circulation when you must stand. Examples include gentle weight shifting, calf raises, marching on the spot, glute squeezes, and crossing or tensing the legs. These are sometimes called physical counter-manoeuvres.
Breathing patterns can also influence symptoms. Some people over-breathe during symptom spikes. A physiotherapist may incorporate breathing retraining strategies that support symptom control and reduce panic escalation when dizziness or palpitations occur.
Bracing & Taping
Bracing and taping in POTS most commonly refers to compression garments rather than joint taping. Graduated compression stockings (and in some cases abdominal compression) can reduce blood pooling in the legs and abdomen, which may reduce dizziness and improve standing tolerance. Your physiotherapist can help with practical considerations such as garment type, fit, comfort, and when to use compression (for example, during long standing tasks, travel, or upright exercise sessions).
If hypermobility is present, joint taping or bracing may be used selectively to improve joint control during exercise progression, but this is tailored carefully to avoid over-reliance.
Education
Education is one of the most valuable parts of POTS physiotherapy. People are often told to “just exercise more” without a plan that respects symptom biology. Physiotherapists help you understand why symptoms happen and how to respond in a way that reduces flare cycles.
Education commonly includes: recognising early warning signs of a flare, using safe postural transitions, planning recovery after exertion, and understanding how hydration, salt, heat, sleep and illness affect symptoms. Advice to increase salt and fluids should be aligned with your doctor’s guidance, especially if you have high blood pressure, kidney disease, heart disease, or other conditions where salt management needs medical oversight.
Physiotherapists also help set realistic goals and tracking tools. For example, you might track upright minutes, symptom recovery time, and exercise tolerance rather than focusing only on step counts, which can be misleading early in rehabilitation.
Other
Other physiotherapy strategies may include falls risk management if dizziness is severe, vestibular screening when symptoms overlap with vertigo, and coordination with your medical team regarding medication timing (for example, some people exercise at a time of day when symptoms are typically lower).
In some cases, physiotherapists may also guide supervised group reconditioning or gym programs to improve confidence, adherence, and safe progression. If fatigue is prominent or you experience post-exertional symptom worsening, the program may include conservative pacing and smaller progression steps.
Other Treatments
Medical and allied health treatments for POTS are individualised. Many people are advised on fluid intake, salt intake (when appropriate), and the use of compression garments. Medications may be considered by a doctor to support blood pressure, reduce tachycardia or improve symptoms. Examples sometimes used include beta-blockers, ivabradine, fludrocortisone or midodrine, but these require medical assessment and monitoring.
Psychological support can be helpful, not because POTS is “all in your head”, but because living with unpredictable symptoms can increase stress, health anxiety and avoidance patterns. Support can help with coping skills, symptom pacing, and returning to valued activities.
Surgery
Surgery is not a treatment for POTS. If POTS is secondary to another condition, surgical decisions (if any) relate to that underlying condition and are managed by the relevant medical specialists.
Prognosis & Return to Activity
The prognosis for POTS varies. Some people improve substantially over time with appropriate management, particularly when deconditioning is a major contributor and graded exercise is tolerated and progressed. Others experience long-term symptoms that fluctuate, especially if POTS is secondary to another condition that remains active.
Many people can improve quality of life and function with a combination of medical management, lifestyle strategies, and structured physiotherapy-led reconditioning. Progress is often non-linear, with flare-ups during illness, hot weather, major stress, or periods of disrupted sleep.
Complications
- Injuries from falls related to dizziness or fainting.
- Deconditioning from activity avoidance, which can worsen orthostatic intolerance over time.
- Reduced participation in work, study, sport and social activities due to symptom unpredictability.
- Secondary anxiety, low mood, or loss of confidence related to chronic symptoms.
Preventing Recurrence
- Maintain a consistent, graded exercise routine (often starting recumbent) to protect cardiovascular fitness and reduce the risk of relapse into deconditioning.
- Use heat strategies in Australian summers, such as cool showers, cooling towels, and scheduling exercise for cooler times of day to reduce symptom flare-ups.
- Plan upright tasks with pacing: break long standing jobs into short blocks and use seated options where possible.
- Use compression garments strategically for higher-risk situations such as long travel, prolonged standing events, or upright exercise sessions.
- Keep hydration and (if medically approved) salt strategies consistent during illness, travel, and periods of high stress when symptoms often worsen.
When to See a Physio
- You have dizziness, palpitations, or faint feelings that are worse when standing and improve when lying down, and you want safe strategies while awaiting medical assessment.
- You have a POTS diagnosis and need a graded, structured exercise plan to rebuild tolerance without triggering frequent flare-ups.
- You avoid activity due to symptoms and feel your fitness, strength, or confidence is declining.
- You have POTS plus hypermobility or chronic pain and need an integrated rehab plan that addresses both.