Generalized Anxiety Disorder (GAD) Assessment View Calculator If you worry too much, feel restless, and don't sleep well, you may be experiencing symptoms of generalized anxiety disorder (GAD). Take this quick assessment to learn more about the symptoms of GAD and help you determine whether or not you might have GAD. These questions are based on the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition or DSM-IV. Learn more about putting this calculator or other calculators on your website.