Title: what causes a blackout?
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Content: what causes a blackout? Causes of Blackouts. The most common cause of a blackout is called syncope, (“sin-co-pee”). Syncope describes blacking out because of a sudden drop in blood flow to the brain. Usually syncope is so-called “Reflex Syncope”. This is the cause of fainting. The blackout occurs because blood pressure suddenly drops and the brain is temporarily starved of oxygen and glucose. Although a faint can cause accidental injury, it is not dangerous of itself, provided the patient can lie down flat. Lying flat tends to restore blood flow to the brain, especially if the head is down and the feet are raised. About half of us suffer a faint at some time during life.