According to MedicineNet.com: "Generalized Anxiety Disorder is characterized by excessive, exaggerated anxiety and worry about everyday life events. People with GAD tend to always expect disaster and can't stop worrying about health, money, family, work or school. In people with GAD, the worry often is unrealistic or out of proportion for the situation. Daily life becomes a constant state of worry, fear and dread. Eventually, the anxiety so dominates the person's thinking that it interferes with daily functioning, including work, school, social activities and relationships."
Read more from MedicineNet.com about Anxiety at:
http://www.medicinenet.com/anxiety/article.htm