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Condition4 min read

Stroke

CVA

Organ or systemBrainOrgan
Detail level

A stroke happens when blood stops flowing to part of the brain. It is a medical emergency: call for an ambulance at the first sign of face drooping, arm weakness or speech problems.

A stroke occurs when blood flow to part of the brain stops; it is a life-threatening condition that requires urgent hospital care. The FAST signs: Face, Arms, Speech, and Time to call an ambulance. It may affect speech and movement, and recovery takes a long time.

Causes are divided between a vessel blockage and bleeding, and risk factors include high blood pressure, diabetes, atrial fibrillation, high cholesterol and a previous transient ischaemic attack. Diagnosis relies on imaging by CT or MRI. The NHS points out that signs of stroke, even if they go away within 24 hours, call for an ambulance.

In one minute123

What is it?
Blood flow to part of the brain stops; a life-threatening emergency.
Who is usually affected?
Risk rises with high blood pressure, diabetes, atrial fibrillation, smoking, and after age 50.
Acute or chronic?
Acute; recovery may take a long time.
Main symptoms
Weakness of the face and arm and disturbed speech (FAST), severe headache and dizziness.
Red flags?
Yes: any sign of stroke calls for an ambulance immediately.
Preventable?
Control blood pressure and sugar, quit smoking, a balanced diet, physical activity.

What is it?

A stroke is the stopping of blood flow to part of the brain; a serious, life-threatening condition that requires urgent hospital care.

Sources1

Risk factors

Age over 50, African or South Asian descent, sickle cell anaemia, migraine, combined contraceptive pills, pregnancy complications such as pre-eclampsia, and the postnatal period.

Accompanying conditions: high blood pressure, diabetes, atrial fibrillation, high cholesterol, and a previous transient ischaemic attack.

Sources3

Symptoms

FAST signs: Face weakness (a drooping mouth and difficulty smiling), Arm weakness (inability to raise both arms), Speech disturbance (slurred speech or confusion), and Time to call an ambulance.

Other symptoms: weakness or numbness on one side of the body, change in vision, difficulty finding words, confusion, dizziness, severe headache, nausea and vomiting.

Sources2

How is it diagnosed?

CT and MRI imaging are used in diagnosis according to the structure of the NHS page.

Sources1

Treatment

The treatment categories usually used are listed here; this is not a prescription. The doctor chooses the plan according to each person's condition; do not change any medicine or dose without a specialist.

Urgent hospital care, then rehabilitation to regain speech and movement. Details of acute treatment need a broader reference (in progress).

Strength of evidence: Moderate evidence

Why this rating: Based on guidance pages from major health bodies (WHO, NHS and NIH) that have not been systematically appraised here; it will be reviewed with a medical reviewer before the grade is raised.

The true effect is probably close to the estimate, but new research could change it.

Sources1

Follow-up

The condition may affect speech and movement and recovery takes a long time according to the NHS.

Sources1

Prevention

Quitting smoking, a balanced diet, physical activity, cutting down on alcohol, and keeping to medicines for accompanying conditions. A person who has had a stroke or a transient attack has a higher risk of recurrence and can lower it with these measures.

Strength of evidence: Moderate evidence

Why this rating: Based on guidance pages from major health bodies (WHO, NHS and NIH) that have not been systematically appraised here; it will be reviewed with a medical reviewer before the grade is raised.

The true effect is probably close to the estimate, but new research could change it.

Sources3

When do you need urgent help?

Call emergency services now 998

  • One FAST sign or suspected stroke, even if the symptoms have gone away in the last 24 hours: call an ambulance immediately, and do not drive yourself.2

See your doctor within days

  • Having risk factors (blood pressure, diabetes, atrial fibrillation, cholesterol) without a follow-up plan.3

Educational content only — no diagnosis, and no substitute for a clinician.

Common questions

Should I wait if the stroke symptoms go away?

No. The NHS states to call an ambulance immediately even if signs of stroke appeared within the last 24 hours and have gone away.2

Questions for your doctor

  • What are my risk factors, and how do I lower them?
  • Do I need screening for atrial fibrillation or vascular imaging?
  • What is the rehabilitation plan after a stroke?
  • Which preventive medicines suit me?

References

  1. 1 Health agencies & guidelines · Accessed 2026-10-05
  2. 2
    NHS. Stroke — Symptoms. www.nhs.uk/conditions/stroke/symptoms/
    Health agencies & guidelines · Accessed 2026-10-03
  3. 3
    NHS. Stroke — Causes. www.nhs.uk/conditions/stroke/causes/
    Health agencies & guidelines · Accessed 2026-10-05

Review status: Edited content · Last updated:

Change log
  • — Page created.

Educational content only — no diagnosis, and no substitute for a clinician.

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Emergency numbers

This platform is educational and must not be relied on in emergencies. If a situation is serious, call emergency services now.

UAE numbers (Police 999, Ambulance 998, Civil Defence 997) are from the official UAE Government portal, checked on 7 October 2026: u.ae. For other countries, confirm the official number where you are; numbers can vary by region.

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