A stroke is a medical emergency that occurs when blood flow to a part of the brain is interrupted, causing brain cells to be deprived of oxygen and nutrients. This interruption can result from either a blocked blood vessel (ischemic stroke) or the rupture of a blood vessel (hemorrhagic stroke). The lack of oxygen causes the brain tissue to become damaged, leading to the sudden loss of brain function.
Types of Stroke
- Ischemic Stroke: The most common type, occurring when a blood clot blocks or narrows an artery leading to the brain. It accounts for about 87% of all strokes. This can be caused by atherosclerosis, where fatty deposits build up in the arteries, or cardioembolism, where a clot forms in the heart and travels to the brain.
- Hemorrhagic Stroke: Occurs when a blood vessel in the brain bursts, causing bleeding within or around the brain. This type is often associated with high blood pressure, aneurysms, or arteriovenous malformations.
- Transient Ischemic Attack (TIA): Often referred to as a “mini-stroke,” a TIA occurs when blood flow to the brain is temporarily interrupted. The symptoms are similar to a stroke but are short-lived and don’t cause permanent brain damage.
If you or someone you know exhibits signs of a stroke, it’s critical to seek immediate medical attention. Prompt treatment can reduce the extent of brain damage and improve the chances of recovery.
Symptoms of Stroke
Symptoms of stroke include: sudden changes that require immediate attention.
- Weakness or numbness in the face, arm, or leg
- Difficulty speaking or understanding speech
- Vision problems in one or both eyes
- Severe headache with no known cause
- Loss of balance or coordination
Causes of Stroke
Common causes and risk factors for stroke include: reduced blood flow, inner ear issues, fluid loss, or inflammation.
- High blood pressure
- Diabetes
- Heart disease
- Smoking
- Obesity
When to See a Doctor Stroke?
Seek medical advice for possible stroke if: you experience sudden confusion, trouble speaking, or a severe headache. Emergency signs include fainting, chest pain, or sudden vision changes.
Related Terms of Stroke
FAQs for Stroke
When should I go to the ER for stroke?
If you experience sudden weakness, confusion, or severe headache, seek emergency care immediately.
How can heat and dehydration affect stroke risk?
In hot climates like the UAE, dehydration can increase stroke risk; staying hydrated is essential, especially during fasting or long-haul travel.
What are general ways to reduce stroke risk?
Maintaining a healthy lifestyle, including regular exercise and a balanced diet, can help lower the risk of stroke.
