A normal reaction to stress is what we call anxiety. It alerts us to potentially dangerous situations and help us prepare and pay attention. Anxiety disorders differ from normal feelings of nervousness or anxiousness and involve excessive fear or anxiety. Anxiety disorders are the most common mental disorders and affect nearly 30% of adults at some point in their lives. These disorders can cause people to try to avoid situations that trigger or worsen their symptoms. All areas of life of an individual is affected like job performance, school work and personal relationships. However, anxiety disorders are treatable and most people live productive lives with proper management skills and treatment.