First of all, there are several different types of anxiety disorders. However, they all tend to have symptoms such as worry, restlessness, irritability, difficulty sleeping and anxiety. Some of the specific anxiety disorders are Generalized Anxiety Disorder, Panic Disorder, Social Phobia, Obsessive-Compulsive Disorder and Posttraumatic Stress Disorder. Each of these has some or all of the symptoms above and some differentiating symptoms.