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Connective tissue & hypermobility

Dysautonomia overview

Dysautonomia means the automatic nervous system - the controller of heart rate, blood pressure, digestion, temperature and sweating - is misfiring; this guide maps the main forms and the route to testing.

Key points

The essentials at a glance.

What to look out for, which tests matter, who treats it, and what usually happens next.

  • Umbrella term: includes POTS, orthostatic hypotension, vasovagal syncope, autonomic neuropathies and rarer degenerative forms

  • Symptoms span systems: dizziness, palpitations, gut dysmotility, temperature intolerance, sweating changes, bladder issues

  • Underlying causes matter: diabetes, autoimmune disease, EDS, Parkinson's-spectrum disorders and post-viral states

  • Objective testing exists - stand tests, tilt-table, sweat and heart-rate variability testing

  • Referral is usually to cardiology, neurology or one of the UK's few dedicated autonomic units

Understanding it

About Dysautonomia overview.

The autonomic nervous system runs everything you never think about. When it malfunctions, symptoms scatter across specialties: cardiology sees the palpitations, gastroenterology the bloating and nausea, urology the bladder, and nobody sees the whole. That fragmentation is why dysautonomia patients average years to diagnosis - each specialist finds their organ structurally normal and discharges, missing that the wiring, not the organs, is the problem.

Getting traction means naming the pattern: a symptom list organised by system, home lying-and-standing observations, and a referral that asks the autonomic question directly. Testing then stratifies - simple bedside measures first, tilt-table and sweat testing in specialist units - while the search for an underlying driver (glucose, autoimmune screens, B12, and in the right context antibody panels) runs in parallel. In many parts of the UK, a routine NHS referral to the relevant specialist clinic currently means waiting many months - sometimes more than a year for the rarest conditions - whereas an initial appointment with a private consultant is typically available within around two weeks, with investigations arranged soon after.

Frequently asked

Common questions about Dysautonomia overview.

Quick, plain-English answers to what people ask us most.

  • What is dysautonomia?

    Dysautonomia means the autonomic nervous system - the automatic controller of heart rate, blood pressure, digestion, temperature, and other involuntary body functions - isn't working properly, causing a wide range of possible symptoms.

  • What causes dysautonomia?

    Causes range widely, including specific conditions like postural orthostatic tachycardia syndrome (POTS), diabetes, certain autoimmune conditions, and, in some cases, no clearly identifiable underlying cause is found despite thorough investigation.

  • What are the symptoms of dysautonomia?

    Symptoms can be diverse given the many functions the autonomic nervous system controls, including dizziness on standing, abnormal heart rate responses, digestive problems, temperature regulation issues, and fatigue.

  • Is dysautonomia dangerous?

    This depends on the underlying cause and severity - some forms are manageable and don't threaten overall health, while others, particularly if severe or linked to a serious underlying condition, need more careful specialist management.

  • How is dysautonomia diagnosed?

    Diagnosis typically involves specific autonomic function tests (such as tilt-table testing), alongside investigation for underlying causes, ideally coordinated by a specialist with expertise in autonomic disorders.

  • How is dysautonomia treated?

    Treatment depends heavily on the specific type and underlying cause identified, ranging from lifestyle measures (increased fluid and salt intake, compression garments) to specific medications targeting the particular autonomic dysfunction present.

  • Can dysautonomia be cured?

    This depends on the cause - some forms improve significantly with treatment and lifestyle measures, while others are managed as an ongoing chronic condition, particularly when linked to an underlying condition that itself isn't curable.

  • Is dysautonomia the same as POTS?

    POTS (postural orthostatic tachycardia syndrome) is one specific, well-recognised type of dysautonomia, but dysautonomia is a broader term encompassing various forms of autonomic nervous system dysfunction beyond just POTS.

  • How long does it take to diagnose dysautonomia?

    This can vary considerably, sometimes taking months given the diverse and sometimes non-specific nature of symptoms, which is why referral to a specialist with specific expertise in autonomic disorders can help streamline the diagnostic process.

  • When should I see a specialist about possible dysautonomia?

    See a specialist if you have a combination of symptoms like dizziness on standing, abnormal heart rate changes, and other unexplained symptoms affecting automatic body functions. A private autonomic or cardiology consultation is often available within about two weeks.