An anxiety attack is a sudden surge of overwhelming fear that comes without warning and without any obvious reason. It is a emotionally crippling condition that occurs suddenly and in many cases disappears just as quickly.
The human body's nervous system has a function that is commonly known as "fight or flight." It is a response to danger occurring at that moment. When events happen that require split-second responses to protect oneself, this part of the nervous system begins working. In an individual who suffers from anxiety attacks, the sensation seems to come from nowhere and for no reason. Occurrences can happen at times when the situation seems harmless, even during sleep; yet, the sensations are as intense and real as in a truly dangerous situation.
Why some people suffer from anxiety attacks while others do not is something of a mystery to researchers. Studies have shown that stressful life events both positive and negative (i.e., marriage, graduation, birth of a baby, etc.) may have a part in influencing a panic attack.