All of us feel anxious at times. We may worry about things that might happen. We may have a restless night of sleep. But people with generalized anxiety disorder (or GAD) have physical symptoms that interfere with their normal lives. These problems may include restlessness, fatigue, problems with concentration, irritability, muscle tension, and/or insomnia. In addition, these individuals worry about a variety of events, such as health, financial problems, rejection, and performance, and they find it difficult to control their worry. Many people with GAD feel that their worry is “out of control” and that it will make them sick or make them go insane.