Stroke is a medical emergency where blood supply to part of the brain is interrupted. Every minute counts — recognising the signs and calling 119 immediately can save a life and prevent permanent disability.
A stroke occurs when blood supply to part of the brain is suddenly interrupted, either by a blockage (ischaemic stroke, 85% of cases) or by a burst blood vessel (haemorrhagic stroke). Without blood flow, brain cells begin to die within minutes — making stroke one of the most time-critical medical emergencies. In Korea, comprehensive stroke centres at major hospitals such as Seoul National University Hospital and Asan Medical Center are equipped with the latest thrombolysis (clot-busting) and thrombectomy (clot removal) technology, offering outcomes comparable to the world's best stroke centres.
The FAST acronym is the globally recognised tool for stroke recognition: Face drooping (one side), Arm weakness (one arm drifts down), Speech difficulty (slurred or strange), Time to call 119. A transient ischaemic attack (TIA or "mini-stroke") causes the same symptoms but resolves within minutes to hours. TIA is a medical emergency too — it is a warning sign of imminent major stroke and requires immediate hospital evaluation.
Korea's stroke risk factors mirror global patterns but are compounded by high rates of hypertension, diabetes, and an ageing population. All of these are modifiable with proper medical management. Community health centres provide blood pressure monitoring, diabetes management, and atrial fibrillation screening — a major stroke risk factor. Korea's stroke rehabilitation services at major hospitals provide physiotherapy, speech therapy, and occupational therapy to maximise recovery.
Key Points
- FAST: Face drooping, Arm weakness, Speech difficulty, Time to call 119
- Every minute of stroke = approximately 2 million brain cells lost
- Ischaemic stroke treated with clot-busting drugs within 4.5 hours of onset
- Major hospitals in Seoul operate comprehensive stroke centres with 24/7 emergency care
- TIA ('mini-stroke') is an emergency — 10-15% risk of major stroke within 48 hours
- Risk factors: hypertension, atrial fibrillation, diabetes, smoking, high cholesterol
Causes & Risk Factors
- Hypertension — the single most important modifiable stroke risk factor
- Atrial fibrillation (irregular heart rhythm) — causes clots that travel to the brain
- Diabetes and high cholesterol
- Smoking
- Prior TIA or stroke
- Carotid artery disease
When to See a Doctor
- Any FAST symptoms — call 119 immediately, do not wait
- TIA symptoms that resolve — still a medical emergency, go to the emergency department
- Annual blood pressure and cardiovascular risk checks if you have risk factors
- If you have atrial fibrillation — anticoagulation therapy significantly reduces stroke risk
- After a stroke — rehabilitation and secondary prevention are critical
For emergencies in Korea, call 119
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This content is published for educational purposes only. For accurate diagnosis and personalised treatment, consult a licensed KMA physician in Korea.
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Medical Disclaimer
This article is published by DoctorsInKorea.com for educational and informational purposes only. It does not replace a professional clinical evaluation by a licensed healthcare provider. For accurate medical diagnosis and personalised treatment paths, please book an appointment with a licensed KMA physician. For immediate life-threatening medical emergencies in Korea, please call 119.
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Last reviewed: May 29, 2026