How to Recognize the Signs of a Stroke (FAST + BE-FAST): Complete 2026 US Guide (CDC + AHA + ASA)

Short answer: You can recognize the signs of a stroke quickly with the FAST and the expanded BE-FAST acronyms used by the American Heart Association (AHA), the American Stroke Association (ASA), and the CDC: Balance loss, Eyes (sudden vision changes), Face drooping, Arm weakness, Speech difficulty, and Time — call 911 immediately. Every minute of stroke 1.9 million neurons die (“time is brain”). Treatments like IV thrombolytic (alteplase / tenecteplase) work within 4.5 hours of onset and mechanical thrombectomy within 24 hours in selected patients — but outcomes are dramatically better the sooner treatment starts. In the US, stroke is the 5th leading cause of death and a leading cause of long-term disability.

Table of Contents

1. What a Stroke Is
2. FAST and BE-FAST
3. Other Stroke Signs
4. Transient Ischemic Attack (TIA)
5. Why Time Matters — Treatment Windows
6. What Happens When You Call 911
7. Risk Factors
8. Prevention
9. Recovery and Rehabilitation
10. When to Call 911 vs ER
11. FAQs
12. References

1. What a Stroke Is

A stroke occurs when blood flow to part of the brain is interrupted (ischemic, ~87% of US strokes) or a brain blood vessel ruptures (hemorrhagic, ~13%). The CDC reports 795,000 strokes per year in the US, with 160,000 deaths — about 1 of every 19 US deaths. Fast recognition and emergency response transform outcomes.

2. FAST and BE-FAST

Learn and share these acronyms with your family. FAST is the original CDC/AHA campaign; BE-FAST adds two posterior-circulation signs that FAST misses.

• B — Balance: sudden loss of balance, coordination, or difficulty walking
• E — Eyes: sudden vision loss, double vision, blurred vision in one or both eyes
• F — Face drooping: ask the person to smile; one side droops
• A — Arm weakness: ask the person to raise both arms; one drifts down
• S — Speech difficulty: slurred, hard to understand, or inability to speak; ask the person to repeat a simple sentence
• T — Time: call 911 immediately; note the time of symptom onset or when the person was last known well

3. Other Stroke Signs

• Sudden numbness or weakness, especially on one side of the body
• Sudden confusion or trouble understanding speech
• Sudden severe headache — “worst of my life” — with no known cause (classic for subarachnoid haemorrhage)
• Sudden dizziness or vertigo
• Sudden difficulty swallowing (dysphagia)
• Loss of consciousness
• Seizure as first stroke manifestation (less common)

4. Transient Ischemic Attack (TIA)

A TIA (“mini stroke”) produces the same symptoms but resolves within hours and causes no permanent damage on imaging. TIA is a major warning sign: up to 10–17% of patients have a full stroke within 90 days (highest risk in first 48 h). Call 911 for any TIA symptoms — do not wait. Rapid workup and secondary prevention (antiplatelet, statin, blood pressure, carotid imaging) dramatically reduce stroke risk.

5. Why Time Matters — Treatment Windows

• Ischemic stroke: IV thrombolytic (alteplase / tenecteplase) up to 4.5 h from onset in eligible patients
• Mechanical thrombectomy (endovascular clot retrieval): up to 24 h in selected patients with large-vessel occlusion based on CT perfusion / MRI mismatch (DAWN and DEFUSE-3 trials)
• Haemorrhagic stroke: urgent blood pressure control, reversal of anticoagulation, possibly neurosurgery
• “Last known well” time is critical — document when the person was last seen without symptoms
• Every 30-minute treatment delay reduces the chance of good functional outcome

6. What Happens When You Call 911

• Dispatcher may give pre-arrival instructions
• EMS performs a prehospital stroke screen (Cincinnati or LAPSS)
• Transport to the nearest Primary Stroke Center or Comprehensive Stroke Center — US has over 1,900 certified centers
• In many US cities, mobile stroke units with on-board CT scanners begin treatment en route
• Non-contrast CT, labs, NIH Stroke Scale (NIHSS) on arrival
• CT angiography for large-vessel detection; perfusion imaging for thrombectomy decision
• Door-to-needle target <60 min, door-to-groin puncture <90 min

7. Risk Factors

• Age ≥55 (risk doubles every decade)
• Hypertension — single biggest modifiable risk factor
• Smoking / vaping
• Diabetes
• Dyslipidaemia
• Atrial fibrillation (anticoagulation reduces risk ~65%)
• Carotid artery disease
• Prior stroke or TIA
• Obesity, sedentary lifestyle
• Heavy alcohol, cocaine, methamphetamine use
• Family history, Black Americans (higher risk)
• Sickle cell disease
• Pregnancy / postpartum (small but real risk — see our warning-signs-after-childbirth article)
• Hormonal contraceptives in smokers
• Sleep apnoea

8. Prevention

• Control blood pressure <130/80 mmHg (AHA/ACC 2017)
• Treat diabetes to individualised HbA1c target
• Statin for primary and secondary prevention
• Antiplatelet for secondary prevention (aspirin, clopidogrel)
• Anticoagulation for atrial fibrillation (DOACs preferred — apixaban, rivaroxaban, dabigatran, edoxaban)
• Carotid revascularisation if significant stenosis in appropriate patients
• Smoking cessation — 1-800-QUIT-NOW
• Mediterranean / DASH diet
• 150 min/week moderate exercise
• Healthy weight
• Treat sleep apnoea
• Moderate or no alcohol

9. Recovery and Rehabilitation

Post-stroke US patients enter an organised rehabilitation pathway: acute hospital stay, inpatient rehabilitation facility (IRF) or skilled nursing (SNF), home health, outpatient therapy. Interdisciplinary teams include physical, occupational, and speech therapy, rehab physicians (physiatrists), neurologists, and social workers. Medicare and most US commercial insurers cover rehabilitation. Recovery continues for months to years with continued therapy and secondary prevention.

10. When to Call 911 vs ER

Call 911 for any sudden onset of stroke symptoms. Do NOT drive the person yourself — EMS begins treatment and routes to the right stroke center. Call for even brief TIA-like symptoms. If a loved one takes a baby aspirin for prevention and has a sudden headache or weakness, do not give extra aspirin — in haemorrhagic stroke this worsens outcome. Let the ER team decide.

Related reading: What is the difference between ischemic heart disease and a stroke, what are 10 ways to keep my heart healthy, and for secondary mental-health effects after stroke how to recognize the signs of depression.

11. External Video Resource

CDC + American Stroke Association: BE-FAST (YouTube)

12. FAQs

Q1. What is the difference between FAST and BE-FAST?
BE-FAST adds Balance and Eyes to catch posterior-circulation strokes that FAST may miss.

Q2. Can young people have a stroke?
Yes — ~15% of US ischemic strokes occur in adults under 50. Risks include migraine with aura, drug use, oral contraceptives + smoking, patent foramen ovale (PFO), inherited clotting disorders, and sickle cell disease.

Q3. What is the “wake-up stroke”?
Symptoms recognised on awakening with uncertain onset. Modern perfusion imaging can still qualify selected patients for treatment.

Q4. Does aspirin help during a suspected stroke?
Not routinely — in haemorrhagic stroke it worsens bleeding. Let EMS and the ER decide after imaging.

Q5. What is tPA / alteplase?
Tissue plasminogen activator — a clot-dissolving IV medication for ischemic stroke within 4.5 hours. Tenecteplase is increasingly used as an alternative with easier bolus dosing.

Q6. Can rehabilitation reverse a stroke?
Rehabilitation can produce remarkable recovery through neuroplasticity, especially in the first 6 months. Benefits continue for years.

Q7. Should I take baby aspirin to prevent stroke?
USPSTF 2022: aspirin for primary prevention is individualised, not universal. Discuss risk-benefit with your clinician.

13. US Resources

• CDC Stroke Prevention: cdc.gov/stroke
• American Stroke Association: stroke.org — including Together to End Stroke campaign
• Primary and Comprehensive Stroke Center locator: jointcommission.org and heart.org
• Mobile Stroke Units in Houston, Cleveland, Denver, Memphis, Chicago, NYC and others
• Local 911 — never drive the patient yourself
• 1-800-QUIT-NOW for smoking cessation

14. Conclusion

Learning to recognize the signs of a stroke using BE-FAST and calling 911 immediately is one of the single most important US public-health messages. With fast action, modern IV thrombolytics and mechanical thrombectomy save lives and preserve brain function. In 2026 the US has an outstanding stroke-care network — your job is to recognise and call.

15. References

1. CDC. Stroke Facts, 2024.
2. American Heart Association / American Stroke Association. 2024 Guidelines for the Early Management of Acute Ischemic Stroke.
3. AHA/ASA. Thrombectomy Window Extension — DAWN and DEFUSE-3 Trials.
4. USPSTF. Aspirin for Primary Prevention of CVD and Colorectal Cancer, 2022.
5. Joint Commission. Stroke Center Certification Standards, 2024.
6. NIH NINDS. tPA for Acute Ischemic Stroke, Updated 2024.

Medical Disclaimer: This article is for educational and informational purposes only and does not substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider regarding any medical condition or before making any decisions related to your health. Do not disregard or delay seeking professional advice based on information provided in this article.