Blacking out, also known as syncope, is a temporary loss of consciousness (LOC) caused by a brief interruption of blood flow to the brain. It can be a frightening experience, but it is usually not a sign of a serious medical condition. However, it is important to seek medical attention if you experience recurrent blackouts, as they can be a sign of an underlying health problem.
There are a number of things you can do to avoid blacking out, including: