^ Anxiety: management of anxiety (panic disorder, with or without agoraphobia, and generalised anxiety disorder) in adults in primary, secondary and community care. National Institute for Health and Clinical Excellence. Clinical Guideline 22. Issue date: April 2007 "Archived copy" (PDF). Archived from the original (PDF) on 24 August 2009. Retrieved 2009-07-21. ISBN 1-84629-400-2
Yes, anxiety attacks and their signs and symptoms can feel awful, intense, and threatening. But they aren’t harmful. They pass when the anxiety attack subsides. Getting the right information, help, and support is the best way to treat anxiety attacks and their signs and symptoms. We provide more detailed information in the Recovery Support area of our website.

When people are confronted with unpleasant and potentially harmful stimuli such as foul odors or tastes, PET-scans show increased bloodflow in the amygdala.[92][93] In these studies, the participants also reported moderate anxiety. This might indicate that anxiety is a protective mechanism designed to prevent the organism from engaging in potentially harmful behaviors.

If you have a debilitating fear of being seen negatively by others and humiliated in public, you may have social anxiety disorder, also known as social phobia. Social anxiety disorder can be thought of as extreme shyness. In severe cases, social situations are avoided altogether. Performance anxiety (better known as stage fright) is the most common type of social phobia.
There is a long list of signs and symptoms of an anxiety attack. But because each body is somewhat chemically unique, anxiety attacks can affect each person differently. Consequently, anxiety attack symptoms can vary from person to person in type or kind, number, intensity, duration, and frequency. If your symptoms don’t exactly match this list, that doesn’t mean you don’t have anxiety attacks. It simply means that your body is responding to them slightly differently.