Brain stroke is the third most common death cause in the developed countries around the world. Stroke is a “brain attack” that can happen at any time. It affects the arteries that go to and within the brain. A stroke occurs when a blood vessel that carries oxygen and nutrients to the brain is either blocked by a clot or bursts or ruptures. In that case, part of the brain cannot get the blood and oxygen that it requires thus brain cells die.
The symptoms and signs
The symptoms depend on the brain region that is affected and from the size of it. The symptoms and the signs of the disease mostly occur unexpected and are noticeable right away. To some people stroke can occur during sleeping and the affected notice the signs in the morning. Sudden and fast occurring of the symptoms is the most known sign of stroke, so if the symptoms are developing slowly during few days, weeks or even months this is probably not a brain stroke.
Most common symptoms are:
Muscle weakness and paralyze
It can affect different parts of the body, but mostly it’s represented on the one side of the face, arm and leg. The paralyzing of the right side of the body occurs when the left side of the brain is affected and vice versa.
Loss of sensibility
Brain stroke can cause decreasing of the sense of different parts of the body. You stop feeling your face, arm and leg on one side of the body.
Difficulties with speaking
It causes difficulties with speaking as a result of weakening and loss of coordination on the facial muscles. And it comes as a bad articulated speech (dysarthria). Different type of speech dysfunction that can occur is called dysphasia, which makes you unable to understand the ones speech and language, or talking affluently. Dysphasia occurs as a result of damage in the dominant hemisphere. The left hemisphere is dominant to most people that are right handed and even some left handed. The right hemisphere is dominant only with the half of the left handed people.
The brain stroke causes a loss of sight to the whole sight field (monocular blindness) or half of the sight field (hemianopia) or causes a double sight (diplopia). The loss of sight on one eye which occurs instantly and it gets better trough 24 hours, mostly represents a short deficit of blood on one eye and it is called amrosis fugax.
Stroke can manifest itself with vertigo, dizziness and loss of balance. Sometimes it follows with nausea and sense of vomit.
Usually the stroke does not manifest with headache but it is possible if there is an irritation of the brain membrane. But this symptom comes after a big infarct on the brain, after few days when the edema is the biggest. In certain cases headache happens when we have dissection – breaking of the artery’s inner wall in the brain, which projects as a headache.