Symptoms and the cause of blackout

I found this on the net ... quite informative ne ...

A blackout or sudden loss of consciousness can be due to several causes, and it is not always easy to determine the exact cause in a particular case. A simple faint would probably be the least serious cause. Fainting can occur for many reasons, such as standing in one position for a long time, being dehydrated, severe fright (e.g., at the sight of blood), or other emotional stress. Prior to fainting, some people may experience warning symptoms such as sweating, light-headedness, weak knees, or queasiness of the stomach.

A variety of heart problems can cause a blackout. Some people may have very low blood pressure or a sudden drop in their blood pressure when they stand up. Irregularities of heart rhythm may produce a sudden loss of consciousness without any warning signs. The heart may stop beating for a while or throw in extra beats or beat very fast, all of which result in reduced blood flow to the brain.

A seizure is another reason for loss of consciousness. With a seizure, the person may have jerking movements of the arms and legs and lose bowel or bladder control.

For more information, kindly click on the title
That's all ... it's Friday and I am going to help out at the student bar of the setting up and cleaning up ...