What is a Stroke?
A stroke occurs when blood flow to a part of the brain is interrupted or reduced, depriving brain tissue of oxygen and nutrients. Within minutes, brain cells begin to die 1 .
Health Issues
Stroke
Stroke symptoms require immediate medical attention.
Understand stroke types, risk factors, warning symptoms, diagnosis, treatment and prevention.
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Suspected stroke is a medical emergency. Call local emergency services immediately if someone develops sudden facial drooping, arm weakness or difficulty speaking—even if the symptoms disappear. Do not wait for a clinic appointment.
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Introduction
Stroke is a major cause of death and disability worldwide. Understanding its causes, symptoms, and treatments can be lifesaving. This article provides a comprehensive overview of stroke for the general public.
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A clinician can consider your symptoms, medical history and individual circumstances—things a general guide cannot do.
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Strokes can be categorized based on their cause: ischemic and hemorrhagic.
- Ischemic stroke: Occurs when a blood vessel supplying blood to the brain is obstructed, often by a blood clot 2 .
- Hemorrhagic stroke: Occurs when a blood vessel in the brain ruptures or leaks blood 3 .
Symptoms
Stroke symptoms vary depending on the affected region of the brain, but they usually begin suddenly. Common symptoms include:
- Difficulty speaking or understanding speech
- Paralysis or numbness of the face, arm, or leg
- Blurred or blackened vision in one or both eyes
- Headache
- Dizziness or loss of balance
Diagnosis
If someone shows symptoms of a stroke, it's crucial to seek medical attention immediately. Doctors may use several tests to diagnose stroke:
- Physical examination: Checking for high blood pressure and using a stethoscope to listen to the heart.
- Blood tests: To check sugar levels and other vital metrics.
- CT or MRI scans: To view an image of the brain 4 .
Treatment
Stroke treatment depends on its type:
- For ischemic strokes: Doctors often use clot-dissolving drugs. Another option is a procedure where doctors remove the clot with a device 5 .
- For hemorrhagic strokes: Treatment focuses on controlling the bleeding and reducing pressure in the brain 6 .
Rehabilitation is vital after a stroke, helping patients relearn skills lost due to damage to their brain.
References
- National Institute of Neurological Disorders and Stroke. (n.d.). Brain Basics: Preventing Stroke .
- Mayo Clinic. (2020). Ischemic stroke .
- Mayo Clinic. (2020). Hemorrhagic stroke .
- Harvard Health Publishing. (2019). Diagnosing a stroke .
- MedlinePlus. (2021). Ischemic Stroke Treatment .
- MedlinePlus. (2021). Hemorrhagic Stroke Treatment .
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