diseases that cause fainting
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- Fainting (syncope) is caused by a temporary reduction in blood flow to the brain. Blood flow to the brain can be interrupted for a number of reasons. The different causes of fainting are explained below. Fainting is most commonly caused by a temporary glitch in the autonomic nervous system.
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Vasovagal Syncope or Neurocardiogenic NCS Patients often feel unwell after fainting. They may complain of symptoms including nausea, abdominal pain, clamminess, tremors, lightheadedness, headache, malaise, exhaustion and confusion. Mechanisms and Causes of NCS. When a person stands up, the pull of gravity causes blood to pool in the lower extremities.
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- There are 88 conditions associated with dizziness, fatigue, feeling faint and high blood pressure. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions. 1  Acute stress reaction.
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Syncope (Fainting) Syncope is a temporary loss of consciousness usually related to insufficient blood flow to the brain. It’s also called fainting or passing out. It most often occurs when blood pressure is too low (hypotension) and the heart doesn't pump enough oxygen to the brain. It can be benign or a symptom of an underlying medical condition. What causes syncope?
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Heart Disease and Hypertrophic Cardiomyopathy 1 Fainting (caused by conditions such as irregular heart rhythms, abnormal responses of the blood vessels during exercise, or no cause may be found). 2  Palpitations (fluttering in the chest due to abnormal heart rhythms). 3  Dizziness or lightheadedness.
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- Heart Causes: Heart conditions that can cause syncope or fainting due to temporary loss of consciousness include: 1  Abnormal heart rhythms (heart beating too fast or too slow) 2  Abnormalities of the heart valves (pulmonic valve stenosis) 3  Widespread disease of the heart muscle (cardiomyopathy)
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Dizziness and Fainting Dizziness and Fainting. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms dizziness and fainting including Fainting (vasovagal syncope), Middle ear infection, and Labyrinthitis. There are 45 conditions associated with dizziness and fainting. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.
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Overview This sequence of events is called the vasovagal response, and it can cause you to feel weak, nauseous and even faint. In fact, it's the most common cause of fainting. When vasovagal response causes fainting, it is called vasovagal syncope. Vasovagal response is usually harmless.
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- Fainting, also called syncope, is a temporary loss of consciousness caused by a decreased blood flow to the brain.ecommend on Facebook Tweet ShareCompartir. Fainting, also called syncope, is a temporary loss of consciousness caused by a decreased blood flow to the brain. Although fainting has a variety of possible causes, it is usually triggered by pain or anxiety. Sometimes people faint after vaccination.
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Overview Low blood pressure might seem desirable, and for some people, it causes no problems. However, for many people, abnormally low blood pressure (hypotension) can cause dizziness and fainting. In severe cases, low blood pressure can be life-threatening.
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- Fainting is most commonly caused by a temporary glitch in the autonomic nervous system. This is sometimes known as neurally mediated syncope. The autonomic nervous system is made up of the brain, nerves and spinal cord. It regulates automatic bodily functions, such as heart rate and blood pressure.
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Fainting Fainting, which medical professionals call syncope (pronounced SIN-ko-pea), is a temporary loss of consciousness. Fainting is caused by a temporary loss of the brain's blood supply and can be a sign of a more serious condition. People of any age can faint, but elderly persons may have a serious underlying cause. Fainting accounts for a small portion of emergency department visits and 6% of hospital admissions.
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- The most common causes of fainting are usually not signs of a more serious illness. In these cases, you faint because of: The vasovagal reflex, which causes the heart rate to slow and the blood vessels to widen, or dilate. As a result, blood pools in the lower body and less blood goes to the brain.
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Understanding Fainting -- the Basics A simple episode, also called a vasovagal attack or neurally-mediated syncope, is the most common type of fainting spell. It is most common in children and young adults. A vasovagal attack happens because blood pressure drops, reducing circulation to the brain and causing loss of consciousness.
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- After they wake up, they may feel confused, dizzy, or ill for a while. Some causes of fainting can be serious. These include: 1  Heart or blood vessel problems such as a blood clot in the lungs, an abnormal heartbeat, a heart valve problem, or heart disease. 2  Nervous system problems such as seizure, stroke, or TIA.
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Difficulty standing, Dizziness, Fatigue and Feeling faint Difficulty standing, Dizziness, Fatigue and Feeling faint. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms difficulty standing, dizziness, fatigue and feeling faint including Low blood pressure (hypotension), Dehydration (Children), and Heart rhythm disorder.
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fainting Definition. Fainting is loss of consciousness caused by a temporary lack of oxygen to the brain. Known by the medical term syncope, fainting may be preceded by dizziness, nausea, or a feeling of extreme weakness.
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Understanding Fainting -- the Basics Fainting, also called syncope (pronounced SIN-ko-pee), is a sudden, brief loss of consciousness and posture caused by decreased blood flow to the brain. Many different conditions can cause fainting.ainting is a common problem, accounting for 3% of emergency room visits and 6% of hospital admissions. It can happen in otherwise healthy people. A person may feel faint and lightheaded (presyncope) or lose consciousness (syncope).
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Bradycardia Bradycardia can cause dizziness, weakness, lack of energy or fainting spells. If bradycardia is caused by a medical illness, there will be additional symptoms that are specific to that illness.
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Fainting and/or dizziness Blood flow to the brain may be reduced when the heart rate or rhythm is abnormal (too slow or too fast) or when the heart cannot pump blood adequately because blood flow is blocked, for example, by narrowing of a valve. It could also be due to a heart attack. Fainting or loss of consciousness is a potentially serious situation and medical attention should be called for immediately. Dizziness, especially when standing up too quickly, is an extremely common symptom for people with heart failure.
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Syncope (medicine) Syncope (medicine) Syncope, also known as fainting, is a loss of consciousness and muscle strength characterized by a fast onset, short duration, and spontaneous recovery. It is caused by a decrease in blood flow to the brain, usually from low blood pressure. There are sometimes symptoms before the loss of consciousness such as lightheadedness, sweating, pale skin, blurred vision, nausea, vomiting, or feeling warm. Syncope may also be associated with a short episode of muscle twitching. When consciousness and musc
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- Patient Comments Read 29 Comments Share Your Story. Fainting, which medical professionals call syncope (pronounced SIN-ko-pea), is a temporary loss of consciousness. Fainting is caused by a temporary loss of the brain's blood supply and can be a sign of a more serious condition.
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- It's a benign (and the most frequent) cause of fainting. However, life-threatening conditions may also manifest as syncope. NMS is more common in children and young adults, although it can occur at any age. NMS happens because blood pressure drops, reducing circulation to the brain and causing loss of consciousness. If the syncope is prolonged, it can trigger a seizure.