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By Does Your Duck Quack

Dizziness and low blood pressure: what to do

Low blood pressure can cause dizziness on standing; learn safe immediate steps, medicine review options and when symptoms need urgent help.

Checked: 13 October 2026 · Next review: 13 April 2027 · Applies to: UK, with nation notes
How this guide was prepared

Purpose: urgent guidance · Level: detailed

Checked by: Does Your Duck Quack. Sources are linked below; seek professional advice for individual circumstances.

The short answer

What to do first

Low blood pressure can cause dizziness on standing; learn safe immediate steps, medicine review options and when symptoms need urgent help.

Start here: If dizziness starts, sit or lie down somewhere safe until it passes. Avoid stairs, driving, hot showers or carrying something heavy while unsteady. When ready, move slowly and pause between lying, sitting and standing.

Do not wait: Call 999 for dizziness with chest pain, a sudden severe headache, slurred speech, weakness on one side, fainting with incomplete recovery, or severe breathing difficulty.

Visual guides

See the decision at a glance

When dizziness starts
  1. 1. Sit or lie safelyPause until it passes; avoid stairs, driving, hot showers or carrying heavy items while unsteady.
  2. 2. Move in stagesWhen ready, move slowly and pause between lying, sitting and standing.
  3. 3. Record the patternNote position, duration, symptoms, recent illness, fluid loss and medicine changes.
  4. 4. Arrange a reviewAsk a GP for help with repeated dizziness, fainting or falls.
Emergency signs or repeat symptoms?
  1. Emergency signsCall 999 for chest pain, sudden severe headache, slurred speech, one-sided weakness, or fainting without a full recovery.
  2. Repeated dizzinessArrange a GP or medication review, bringing a complete medicines list.
  3. Fluid adviceFollow personal hydration guidance, including any heart- or kidney-related restriction.

Scope of this guide

This guide helps you understand the options and questions to ask. It is not personal medical, legal or financial advice. Check the official sources for your nation and seek qualified help for high-stakes decisions.

If someone may be in immediate danger

Call 999 for a life-threatening emergency. For an urgent problem that is not clearly life-threatening, use the official NHS urgent-care route for the UK nation you are in. Have the address, symptoms, onset time, medicines and allergies ready.

Who this guide is for

People who feel faint or unsteady when sitting or standing, and the relatives or carers helping them reduce fall risk and arrange a medical review.

A brief dizzy spell may feel like faintness, spinning or loss of balance. Postural, or orthostatic, hypotension is a drop in blood pressure when changing position, often from lying or sitting to standing. Other causes include illness, dehydration, inner-ear problems and medicines. New or repeated symptoms deserve review, particularly after a fall or a change in treatment.

What to do now

1. Make the immediate moment safer

If dizziness starts, sit or lie down somewhere safe until it passes. Avoid stairs, driving, hot showers or carrying something heavy while unsteady. When ready, move slowly and pause between lying, sitting and standing.

2. Notice when and how it happens

Write down whether the feeling is faintness, spinning or imbalance, what position you were in, how long it lasted, and any nausea, palpitations, headache, hearing change, chest symptoms or weakness. Note recent illness, fluid loss, meals and new or changed medicines.

3. Arrange a GP or medication review

Contact a GP for repeated dizziness, fainting, falls or symptoms after starting or changing a medicine. A clinician may check blood pressure in different positions, review health conditions and discuss medicine effects. Bring a current list of prescriptions, over-the-counter medicines and supplements.

4. Follow personal hydration and falls advice

Dehydration can contribute to light-headedness, particularly during illness, heat or poor intake. Drink according to personal advice; some people with heart or kidney conditions have a fluid limit and should follow their plan. Ask whether stockings, exercises, meal changes or another approach is suitable before trying it.

5. Know when symptoms are an emergency

Dizziness with chest pain, a sudden severe headache, slurred speech, weakness or numbness on one side, fainting with incomplete recovery, or severe breathing problems can signal an emergency. Call 999 rather than arranging routine transport.

6. Check for fluid loss without changing a restriction

Dehydration means losing more fluid than you take in, and older adults are more vulnerable. Thirst, dry lips or mouth, dark urine and passing urine less often are useful details to mention alongside dizziness. Illness with vomiting or diarrhoea, heat, sweating and medicines that increase urination can contribute. If you depend on another person for drinks, check that a drink is within reach between visits. Follow any existing fluid restriction and ask the clinical team how it applies during illness, rather than replacing it with a general drinking target.

7. Explain spinning and hearing symptoms

A spinning feeling with nausea or imbalance can have an inner-ear cause. Labyrinthitis may also involve hearing loss or ringing in the ears; vestibular neuritis has similar balance symptoms but does not cause hearing loss or tinnitus. These descriptions help you explain the problem, but do not establish a diagnosis. Tell the GP about ear symptoms as well as the dizziness. If balance problems persist, ask about specialist assessment. Vestibular rehabilitation exercises should be supervised by an appropriate specialist, rather than copied from an exercise routine intended for someone else.

Warning signs and checks

Common questions

Can low blood pressure make me dizzy when I stand up?

Yes. A temporary fall in blood pressure after standing, called postural or orthostatic hypotension, can cause light-headedness, weakness or faintness. It is not the only possible cause, and repeated symptoms should be discussed with a GP. A clinician can check whether medicines or illness are contributing.

What should I do if I feel dizzy after standing?

Sit or lie down in a safe place until the feeling passes. When you feel steadier, move gradually and use a stable support; avoid stairs, driving or showering while symptoms continue. If it keeps happening, causes a fall or began after a medicine change, contact a GP for review.

Can medicines cause low blood pressure or dizziness?

Some medicines can contribute to dizziness or blood-pressure changes, but the effect depends on the medicine and the person. A GP or pharmacist can review the full list, including recently changed prescriptions and non-prescription medicines. Keep taking prescribed treatment unless they tell you otherwise.

When is dizziness an emergency?

Call 999 if dizziness occurs with chest pain, a sudden severe headache, slurred speech, weakness on one side, severe breathlessness, collapse or fainting without a full recovery. These may point to a serious problem that needs immediate assessment. Seek emergency assessment and do not drive yourself.

Does one low blood pressure reading explain my dizziness?

Not necessarily. Blood pressure varies with the time of day, what you are doing and how you feel. Low readings do not always cause symptoms, but repeated dizziness or fainting needs assessment. A GP, practice nurse or pharmacist can check your pressure, and the clinician can consider whether medicines or another condition are contributing. Tell them whether symptoms occur when standing or after meals. Do not alter prescribed treatment on the strength of one reading; ask what your results mean in your circumstances.

Differences across the UK

The clinical assessment is through local NHS services across all four nations. Use NHS 111 in England and Wales, NHS 24 on 111 in Scotland, or the GP out-of-hours service in Northern Ireland when urgent advice is needed outside routine hours. Call 999 across the UK for emergency warning signs. Falls and rehabilitation services are organised locally.

When to get urgent help

Call 999 for dizziness with chest pain, a sudden severe headache, slurred speech, weakness on one side, fainting with incomplete recovery, or severe breathing difficulty.

Primary sources

The publisher checked this guide against the 12 official sources below. This is an editorial source check, not approval by a clinician, lawyer or benefits adviser.

Editorial note: By Does Your Duck Quack.