Most people have experienced fleeting symptoms associated with anxiety disorders at some point in their life. Such feelings — such as having a shortness of breath, feeling your heart pounding for no apparent reason, experiencing dizziness or tunnel vision — usually pass as quickly as they come and don’t readily return. But when they do return time and time again, that can be a sign that the fleeting feelings of anxiety have turned into an anxiety disorder.
People with panic disorder often worry about when the next attack will happen and actively try to prevent future attacks by avoiding places, situations, or behaviors they associate with panic attacks. Worry about panic attacks, and the effort spent trying to avoid attacks, cause significant problems in various areas of the person’s life, including the development of agoraphobia (see below).