Skip to main content

Health condition · Clinically reviewed

Orthostatic hypotension, the blood pressure drop that catches you on standing.

Dizziness or fainting on standing is not just "getting older" - it is usually measurable, explainable and treatable once the cause is found.

Jump to treatment
A radiographer guides a patient onto the bed of an advanced 3 Tesla MRI scanner in a London imaging suite

Why trust this guide

  • 01

    Clinically reviewed

    Written by our editorial team and reviewed by a registered UK clinician before publication.

  • 02

    Sourced from guidance

    Checked against NICE CKS, the ESC and peer-reviewed sources you can see at the end.

  • 03

    Current for 2026

    Reflects UK practice including lying-standing blood pressure testing and specialist-initiated drug therapy.

Key facts

Orthostatic hypotension at a glance.

The essentials, in plain English - what it is, why it happens, and how it's managed in the UK today.

  • What it is

    A fall in blood pressure of at least 20mmHg systolic or 10mmHg diastolic within three minutes of standing, reducing blood flow to the brain.

  • How common

    Affects around 1 in 5 people over 65 and is even more common in frailty and neurodegenerative disease.

  • Main causes

    Medications, dehydration, prolonged bed rest and autonomic dysfunction - each needs a different approach.

  • Key test

    Lying and standing blood pressure, measured at one and three minutes after standing - simple, cheap and diagnostic.

  • First-line care

    Medication review and non-drug measures - fluid, salt, compression and gradual position changes - before any prescribing.

  • When drugs are used

    Fludrocortisone or midodrine for persistent symptomatic cases, usually started by a specialist.

Why this guide matters

A measurable problem, not just "old age."

Orthostatic hypotension is common, under-recognised and closely tied to falls risk. The three points below shape everything else on this page.

  • It is diagnosed with a simple test

    Lying and standing blood pressure, checked at one and three minutes, confirms the diagnosis in a normal clinic appointment.

  • Medications are the commonest cause

    A careful review of antihypertensives, diuretics and antidepressants often resolves symptoms without any new prescription.

  • It can signal something bigger

    Persistent, severe cases can point to autonomic dysfunction from Parkinson's disease, multiple system atrophy or diabetes.

How the diagnosis is made

From a dizzy moment to a clear plan.

The steps a UK GP or specialist will normally follow, in order - so you know what to expect and why.

  1. 01

    Assessing

    History of symptoms on standing

    Dizziness, greying vision or fainting that comes on with standing and eases when sitting or lying down is the classic pattern.

  2. 02

    Assessing

    Lying and standing blood pressure

    Blood pressure and pulse are measured lying down, then again at one and three minutes after standing - the key diagnostic test.

  3. 03

    Assessing

    Medication review

    Antihypertensives, diuretics and some antidepressants are common, reversible causes and are reviewed first.

  4. 04

    Confirming

    Assessing for autonomic disease

    Screening for Parkinson's disease, multiple system atrophy and diabetic autonomic neuropathy where the pattern suggests a neurogenic cause.

  5. 05

    Confirming

    Hydration and volume status

    Checking for dehydration, blood loss or prolonged bed rest as a straightforward, correctable driver.

  6. 06

    Investigating

    Tilt table testing

    Reserved for diagnostic uncertainty or suspected reflex syncope, done in a controlled cardiovascular or neurology clinic.

  7. 07

    Investigating

    Autonomic function tests

    For suspected neurogenic orthostatic hypotension, detailed autonomic testing distinguishes it from other causes of postural symptoms.

Typical timeline: a diagnostic blood pressure check in a single appointment, specialist testing only if uncertain.

Symptoms

What orthostatic hypotension actually feels like.

A consistent pattern - symptoms on standing, relief on sitting or lying down. And the features that mean it's time to escalate.

  • Dizziness and lightheadedness

    The commonest symptom on standing - often described as feeling faint or unsteady for a few seconds.

  • Visual disturbance ("greying out")

    Vision dimming, greying or tunnelling briefly as cerebral perfusion drops on standing.

  • Syncope or near-syncope

    Loss of consciousness or a near-faint - the most serious presentation, with real falls risk.

  • Fatigue

    A generalised tiredness that can be present even without obvious dizziness, especially in older people.

  • Cognitive slowing

    Brief slowed thinking or word-finding difficulty on standing, easing again once seated.

  • Relief on sitting or lying

    Symptoms characteristically settle quickly with sitting or lying flat - a useful clue in the history.

  • Worse after meals or heat

    Postprandial and heat-related worsening is common, particularly in autonomic dysfunction.

  • Red flag - falls and injury

    Recurrent falls or injury from syncope should prompt urgent falls-risk assessment and review.

Treatment

How orthostatic hypotension is treated in the UK.

Medication review and simple non-drug measures come first - specialist drug therapy is reserved for persistent symptomatic cases.

  • Medication review

    Stopping or reducing antihypertensives, diuretics and other causative drugs is often the single most effective step.

  • Fluid and salt intake

    Adequate hydration and, where appropriate, increased dietary salt help maintain circulating volume.

  • Compression stockings

    Graduated compression stockings or abdominal binders reduce venous pooling in the legs on standing.

  • Gradual position changes

    Rising slowly in stages - lying to sitting to standing - gives the circulation time to adjust.

  • Raising the head of the bed

    Sleeping with the head of the bed tilted up reduces overnight fluid shifts and morning symptoms.

  • Physical counter-manoeuvres

    Leg crossing, calf raises and muscle tensing when symptoms start can raise blood pressure quickly.

  • Fludrocortisone

    A specialist-initiated mineralocorticoid that expands blood volume for persistent symptomatic cases.

  • Midodrine

    A specialist-initiated vasoconstrictor used when non-drug measures and volume expansion are not enough.

What this guide is based on

The sources behind every claim on this page.

UK national guidance and cardiovascular society standards, current at the time of last review.

Key references

Guidelines and standards we relied on.

A quiet reminder

This guide is for information, not medical advice.

Your GP or specialist knows your history and medications and can tell you which parts apply to you. If in doubt, get seen.

  • NICE CKS. Hypotension - Clinical Knowledge Summary.

  • European Society of Cardiology (ESC). Guidelines for the diagnosis and management of syncope.

  • British and Irish Hypertension Society. Guidance on postural blood pressure measurement.

  • Royal College of Physicians. Falls and fragility fracture audit programme.

Red flags

When postural symptoms need urgent attention.

Most orthostatic hypotension is manageable in primary care. These are the situations that aren't - and where a specialist opinion is needed.

  • Recurrent syncope

    Repeated fainting episodes need cardiovascular and neurological assessment to exclude serious causes.

  • Falls with injury

    Any fall causing injury, especially a fracture or head injury, warrants urgent falls-risk assessment.

  • New neurological signs

    Tremor, rigidity, slowness or coordination problems alongside postural symptoms suggest Parkinson's disease or multiple system atrophy.

  • Chest pain or palpitations

    Symptoms alongside chest pain, palpitations or breathlessness need urgent cardiac assessment, not just a postural work-up.

  • Supine hypertension

    High blood pressure lying flat alongside low pressure on standing is a specialist autonomic pattern needing careful management.

  • Rapid, severe drops

    Very large or very rapid falls in blood pressure on standing point to significant autonomic failure and need prompt review.

  • Diabetic with symptoms

    New postural symptoms in diabetes may signal autonomic neuropathy and should prompt review of glycaemic control and autonomic testing.

  • Unexplained weight loss or bowel change

    Alongside autonomic symptoms, this can indicate more widespread autonomic or neurodegenerative disease needing specialist input.

  • Symptoms despite treatment

    Ongoing symptoms after medication review and non-drug measures need specialist referral rather than repeated primary-care attempts.

Living with it

A manageable condition, with everyday habits that help.

Four things that make the biggest difference day to day - rising slowly, staying hydrated, knowing your triggers and never brushing off a fall.

A quiet reminder

A few extra seconds standing up can prevent a fall.

Small, consistent habits - kept up every day - do more to protect you than any single treatment on its own.

  1. 01 Habit

    Rise in stages

    Sit on the edge of the bed for a minute before standing, and pause again once upright before walking off.

  2. 02 Fluids

    Front-load your water

    Drinking water quickly rather than sipping slowly gives a short-term pressor effect - useful before getting up.

  3. 03 Vigilance

    Know your triggers

    Heat, alcohol, large meals and prolonged standing all make symptoms worse - plan around them where you can.

  4. 04 Escalate

    Report falls, don't normalise them

    A fall or faint is a signal to review medication and management, not something to just work around.

Frequently asked

Everything we get asked about orthostatic hypotension.

Quick answers on testing, causes, drug options and when to worry.

  • What is orthostatic hypotension?

    A drop in blood pressure of at least 20mmHg systolic or 10mmHg diastolic within three minutes of standing, reducing blood flow to the brain and causing dizziness, visual disturbance or fainting.

  • How is it diagnosed?

    With lying and standing blood pressure measurements, taken after lying flat for several minutes and then repeated at one and three minutes after standing. A qualifying drop confirms the diagnosis.

  • What usually causes it?

    Medications such as antihypertensives, diuretics and some antidepressants are the commonest reversible cause. Dehydration, prolonged bed rest, older age and autonomic dysfunction from conditions like Parkinson's disease or diabetes are other important causes.

  • Do I need medication for this?

    Not usually at first. Reviewing causative drugs and trying fluid, salt, compression stockings and gradual position changes comes first. Fludrocortisone or midodrine are reserved for persistent symptomatic cases and are specialist-initiated.

  • Is orthostatic hypotension dangerous?

    It significantly increases the risk of falls and injury, particularly in older people. Recurrent syncope or falls with injury need prompt assessment rather than being accepted as normal ageing.

  • Can it be linked to a neurological condition?

    Yes - persistent, severe orthostatic hypotension can be an early feature of autonomic dysfunction seen in Parkinson's disease, multiple system atrophy or diabetic autonomic neuropathy, and this should be considered when symptoms don't settle with simple measures.

Related content

Keep reading.

Speak to a specialist

Not sure if your symptoms need a blood pressure check?

Tell us what's happening and we'll match you with the right clinician - GP, cardiology or autonomic specialist.

Pulse Healthcare concierge

Send us your enquiry

A concierge service for UK private healthcare. We match you with the best vetted clinics and consultants in our network - they then contact you directly.

So we can match you to the right clinician close to you.

We reply to every enquiry within 24 hours (Mon–Fri). Confidential - your details are never shared outside our vetted consultant network.