Anxiety is an unpleasant feeling of future-oriented fear and apprehension. The feeling may be accompanied by physical signs of tension, including the following:
Feeling anxiety is a normal response to facing a stressful situation, but excessive, hard-to-control, and long-lasting anxiety may be a symptom of anxiety disorders, such as generalized anxiety disorder, social anxiety disorder, specific phobias, and panic disorder, or of other disorders, including medical conditions.[4]