Filed under: Stress
A panic attack is a sudden episode of intense fear that develops for no apparent reason and that triggers severe physical reactions. Panic attacks can be very frightening. When panic attacks occur, you might think you're losing control, having a heart attack or even dying.
You may have only one or two panic attacks in your lifetime. But if you have had several panic attacks and have spent long periods in constant fear of another attack, you may have a chronic condition called panic disorder.
Panic attacks were once dismissed as nerves or stress, but they're now recognized as a real medical condition. Although panic attacks can significantly affect your quality of life, treatment is very effective.
©1998-2012 Mayo Foundation for Medical Education and Research (MFMER). Terms of use.
Read this article on Mayoclinic.com.

Want to know more about this article or other health related issues? Ask your question and we'll post some each week for CNN.com reader to discuss or for our experts to weight in.

| Most Viewed | Most Emailed |