A short loss of consciousness and muscle strength, characterized by a fast onset, short duration, and spontaneous recovery.
The medical term for fainting is syncope. Fainting is a sudden loss of consciousness, usually temporary and typically caused by a lack of oxygen in the brain. The brain oxygen deprivation has many possible causes, including hypotension (low blood pressure). This rise in the heart rate results in hypotension (drop in blood pressure) in other parts of the body, because the brain is flooded with blood (at the expense of other parts of the body). Hyperventilation combined with hypotension may result in short-term loss of consciousness, muscle weakening, and syncope (fainting). Syncope is temporary loss of consciousness and posture, described as fainting or passing out.. It's usually related to temporary insufficient blood flow to the brain. It most often occurs when the blood pressure is too low (hypotension) and the heart doesn't pump a normal supply of oxygen to the brain.  Syncope is the temporary loss of consciousness due to a sudden decline in blood flow to the brain. It may be caused by an irregular cardiac rate or rhythm or by changes of blood volume or distribution. Syncope can occur in otherwise healthy people. Syncope: Syncope is the temporary loss of consciousness due to a sudden decline in blood flow to the brain. It may be caused by an irregular cardiac rate or rhythm or by ... more about Syncope. Syncope (pronounced “sin ko pea”) is the medical term for fainting or passing out. It is caused by a temporary drop in the amount of blood that flows to the brain. Syncope can happen if you have a sudden drop in blood pressure, a drop in heart rate, or changes in the amount of blood in areas of your body. If you pass out, you will likely become conscious and alert right away, but you may be feel confused for a bit. Syncope may occur as a result of sudden shock. Low blood pressure can cause syncope. The death of a loved one could potentially trigger syncope. A complete checkup is needed to ensure that a sycope incident does not signal something more serious, such as blood pressure issues. Fainting is relatively common Syncope refers to a sudden loss of consciousness often accompanied with collapse, more commonly known as a blackout or faint. Syncope is caused by a lack of blood or oxygen to the brain. When this happens, the brain attempts to increase blood flow to itself by diverting blood away from the rest of the body. Syncope is the proper medical terminology for a sudden loss of consciousness, or fainting. While the underlying causes for syncope vary, the phenomenon is relatively common. Low blood pressure can cause syncope. The death of a loved one could potentially trigger syncope. A complete checkup is needed to ensure that a sycope incident does not signal something more serious, such as blood pressure issues. Fainting, blacking out, or syncope is the temporary loss of consciousness followed by the return to full wakefulness. This loss of consciousness may be accompanied by loss of muscle tone that can result in falling or slumping over.  Syncope, also known as fainting, passing out and swooning, is defined as a short loss of consciousness and muscle strength, characterized by a fast onset, short duration, and spontaneous recovery. It is due to a decrease in blood flow to the entire brain usually from low blood pressure. 
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what is syncope