Title: Blackouts: What Causes a Blackout?
Headings: What Causes Blackouts?
What Causes Blackouts?
What Is a Blackout?
What Causes Blackouts?
How Does Alcohol Cause Blackouts?
Who’s at Risk for Alcohol-Related Blackouts?
Is It Dangerous to Black Out?
What Else Causes Blackouts?
What To Do If You’re Blacking Out

Content: What Else Causes Blackouts? Sometimes, seizures cause a loss of consciousness described as a blackout. More often, people faint when there’s too little blood flow to the brain. Several things can reduce blood flow and cause you to pass out, including: Certain prescription medications
Low blood pressure
Giving blood
Standing too long, especially in a warm or crowded room
Dehydration
Intense fear or stress
Diabetes
Heart problems, including abnormal heart rhythm
What To Do If You’re Blacking Out
Frequent alcohol-related blackouts can be a sign of a serious drinking problem. But the good news is treatment can help. If you have blackouts for unknown reasons, see your doctor for tests. A doctor will want to rule out heart problems that could be life-threatening. But, for many people who faint, there’s not a dangerous health problem to blame. Sometimes, doctors will not find any cause for the blackout.