\what causes blackout
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). The following drugs, medications, substances or toxins are some of the possible causes of Blackouts as a symptom. Always advise your doctor of any medications or treatments you are using, including prescription, over-the-counter, supplements, herbal or alternative treatments. 1  Marijuana. 2  Pot. 3  Cannabis. 4  Hash. A transient episode that occurs during a state of intense intoxication (alcoholic blackout) of which the person has no recall, despite apparently having been conscious at the time. /black·out/ (-out) loss of vision and momentary lapse of consciousness due to diminished circulation to the brain and retina. 2. Momentary loss of consciousness, as in absence. 3. Temporary loss of vision, without alteration of consciousness, due to positive g (gravity) forces; caused by temporary decreased blood flow in the central retinal artery, and seen mostly in aviators. 4. See also: syncope. 2. Momentary loss of consciousness as in an absence. 3. Temporary loss of vision, without alteration of consciousness, due to positive (above normal) g (gravity) forces; caused by temporary decreased bloodlow in the central retinal artery, and seenmostly in aviators. It is pronounced sin-ko-pea. Syncope is due to a temporary reduction in blood flow and therefore a shortage of oxygen to the brain. This leads to lightheadedness or a black out episode, a loss of consciousness. Temporary impairment of the blood supply to the brain can be caused by heart conditions and by conditions that do not directly involve the heart. Blackouts: Loss of consciousness leading to a loss of memory of a specific time. See detailed information below for a list of 38 causes of Blackouts, Symptom Checker, including diseases and drug side effect causes. » Review Causes of Blackouts: Causes | Symptom Checker ». Research the causes of these symptoms that are similar to, or related to, the symptom Blackouts: 1  Dizziness (1357 causes). 2  Fainting (1326 causes). 3  Seizures (2418 causes). 4  Head injury (3 causes). 5  Brain injury. 6  Syncope (2084 causes). 7  Giddiness and Feeling Faint. 8  First Seizure. Other Causes of Blackouts. The other important causes of a blackout are epilepsy and a psychological cause. Whereas 50% of us may faint, only about 0.7% have epilepsy, so that a blackout is much more likely to be due to a faint than an epileptic attack. blackout. temporary loss of vision and momentary unconsciousness due to diminished circulation to the brain and retina. Blackout refers specifically to a condition which sometimes occurs in aviators resulting from increased acceleration, which causes a decrease in blood supply to the brain cells.
1 Dizziness. 2 Fainting. 3 Seizures. 4 Head injury. 5 Brain injury. 6 Syncope. 7 Giddiness and Feeling Faint. 8 First Seizure.