Title : These Are The Symptoms Of A Stroke. Learn How To Recognize Them!
link : These Are The Symptoms Of A Stroke. Learn How To Recognize Them!
These Are The Symptoms Of A Stroke. Learn How To Recognize Them!
Strokes are the third most common cause of death in developed countries, following heart disease and cancer. It affects 0.2% of the population, and is fatal in a third of cases. At least half of the people who have survived a stroke are permanently disabled, making stroke the leading cause of physical, cognitive, emotional and social long-term disability.
Definition
Stroke is a clinical syndrome characterized by an acute loss of brain function, and lasts longer than 24 hours or leading to death . This occurs due to spontaneous bleeding in the brain parenchyma (intracerebral hemorrhage) or in the space surrounding the brain (subarachnoid hemorrhage), ie, hemorrhagic stroke, or as a result of inadequate blood supply to the brain tissue (ischemic stroke ) as a result of thrombosis, stroke or poor circulation, associated with diseases of the blood vessels, heart or blood. This definition includes patients whose subarachnoid hemorrhage is manifested through, acute severe headaches, with or without a stiff neck, with no signs of focal neurologic dysfunction or overall.
A stroke occurs with a sudden loss of function of a body part or speech, or loss of consciousness due to an interruption of blood flow.
Recognize a stroke - symptoms and signs
Each stroke is manifested differently, and symptoms depend on the region affected the brain and its size. Symptoms and signs of this disease usually appear suddenly and are immediately detectable. In some patients, which may occur overnight, and patients to detect when they wake up. The sudden and rapid onset of symptoms is the most recognizable sign of a stroke, so if symptoms develop slowly and gradually worsen over the course of several days, weeks or months, then it could not be a stroke . The most common symptoms of stroke are:
- muscle weakness or paralysis - can invade other parts of the body but usually affects one side of the face, arm and leg (hemiparesis). The weakness on the right side of the body occurs if the left brain deteriorates, and vice versa;
- Loss of sensitivity - A stroke can cause a loss of feeling in certain parts of the body. It usually causes numbness in the face, arm or leg on one side of the body (hemi);
- Speech difficulties - speech of a stroke can cause slurred, as a result of weakness and loss of coordination in the muscles of the face, throat, or throat. This results in dysarthria - clear articulation of speech. Another type of speech disorder is dysphasia, when the person is unable to understand the language of others or are unable to find the right words and not speak fluently, and has reading (dyslexia) or writing difficulties (dysgraphia). Dysphasia occurs due to deterioration of the dominant hemisphere of the brain. The left hemisphere is dominant in almost all right-handed people. The right brain is dominant in almost half of the people who are left-handed, and the size of the left is dominant in the other half;
- Visual symptoms - stroke and TIA (transient ischemic attack) cause a loss of vision that encompasses the entire field of vision (monocular blindness) or blindness in half the field vision (hemianopsia) or cause double vision (diplopia). The loss of vision in one eye, which occurs suddenly and improvement over a period of 24 hours (usually after 5 to 10 minutes) usually represents a lack of short-term blood supply to the eye, called fleeting amaurosis . homonymous hemianopia is a loss of vision on one side (right or left, depending on which side of the race). Double vision occurs when the visual axis of the two eyes is different, which is a result of damage to the nerves that control the movements of the eyeballs;
- Dizziness - stroke and TIA may cause dizziness and loss of balance sometimes accompanied by vomiting and nausea;
- Headache - stroke and TIA rarely cause headaches. However, a headache can occur during stretching or irritation of the tissues of the brain (meninges) or blood vessels in the brain. The stretching of the meninges may occur during a brain inflammation that can occur in brief (minutes to hours) after bleeding in the brain or a few days after a stroke when brain swelling (edema) is in its maximum extension. Bleeding on the surface of the brain (subarachnoid hemorrhage) typically causes a severe headache because blood directly irritates the meninges which are sensitive to pain;
- Vomiting - vomiting may be caused due to a direct injury to the Centers for vomiting in the base of the brain (spinal) or an increased pressure inside the skull (increased intracranial pressure) exerting pressure on them. If the nerves that receive information about maintaining balance are damaged, this can lead to dizziness, nausea and vomiting;
- altered consciousness - a stroke or TIA can cause disruption or loss of consciousness. This can occur as a complication of stroke (eg, seizures); because of the direct involvement of maintaining awareness centers and are located in a part of the brain (brain stem); during heart attacks in that region or increased intracranial pressure directly or indirectly pressures centers in the brainstem.
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