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What’s Exactly Is Stroke ?
A Stroke is a “brain attack”. It occurs when blood flow to an area of brain is cut off. When
this happens, brain cells are deprived of oxygen and begin to die. When brain cells die during a stroke, abilities controlled by that area of the brain such as memory and muscle control are lost. Stroke also known as cerebrovascular accident (CVA). The effect of stroke depends on where the stroke occurs in the brain and how much the brain is damaged. For example, someone who had a small stroke may only have minor problems such as temporary weakness of an arm or leg. People who have larger strokes may be permanently paralyzed on one side of their body or lose their ability to speak. Some people recover completely from strokes, but more than 2/3 of survivors will have some type of disability
Is a numb tongue a sign of a stroke ?
Yes Its a Sign Of low blood flow towards the brain region thus visit a healthcare professional reguarding the concern !
Types of Stroke
There are three main kinds of stroke:
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- Ischemic strokes,
- Hemorrhagic strokes,
- Transient ischemic attacks (TIAs), also referred to as mini-strokes.
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Causes That different forms Brain Attack
The different forms of stroke have different specific causes.
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Causes of Ischemic Stroke: Ischemic stroke is the most common form, accounting for around 85 % of strokes. This type of stroke is caused by blockages or narrowing of the arteries that provide blood to the brain, resulting in ischemia – severely reduced blood flow that damages brain cells. These blockages are often caused by blood clots, which can form either in the arteries within the brain, or in other blood vessels in the body before being swept through the bloodstream and into narrower arteries within the brain. Fatty deposits
within the arteries called plaque can cause clots that result in ischemia. -
Causes of Hemorrhagic Stroke: Hemorrhagic strokes are caused by arteries in the brain either leaking blood or bursting open. The leaked blood puts pressure on brain cells and damages them. It also reduces the blood supply reaching the brain tissue after the hemorrhage point. Blood vessels can burst and spill blood within the brain or near the surface of the brain, sending blood into the space between the brain and the skull. The ruptures can be caused by conditions such as hypertension, trauma, blood-thinning medications, and aneurysms (weaknesses in blood vessel walls). Intracerebral hemorrhage is the most common type of hemorrhagic stroke and occurs when brain tissue is flooded with blood after an artery in the brain bursts. Subarachnoid hemorrhage is the second
type of hemorrhagic stroke and is less common. In this type of condition, bleeding occurs in an artery in the subarachnoid space – the area between the brain and the thin tissues that cover it. -
Causes of Transient Ischemic Attack (TIA): TIAs are different from the kinds
above because the flow of blood to the brain is only briefly interrupted. TIAs are similar to ischemic strokes. In that, they are often caused by blood clots or other clots. TIAs should be regarded as medical emergencies just like the other kinds of stroke, even if the blockage of the artery and symptoms are temporary. They serve as warning signs for future strokes and indicate that there is a partially blocked artery or clot source in the heart.
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