Generalized Anxiety Disorder (GAD) takes the form of excessive and uncontrollable worry about every life activities. Children with GAD worry about many things such as the future, being on time for appointments, health, school performance, crime, change in routines, and family matters. Typically, the child worries when there is really no problem or any realistic circumstance to cause the worry. GAD is often accompanied by concentration difficulties, sleep disturbances, irritability, muscle aches or tension, or other physical symptoms.