Generalized anxiety disorder (GAD) is characterized by excessive, uncontrollable worry about everyday things. It is a common chronic disorder with no single focus of anxiety. Genetics, brain chemistry abnormalities, and environmental stressors can contribute to GAD. Physical symptoms include things like chest pain, nausea, and headaches, while psychological symptoms are anxious mood, worry, and feeling unable to cope. Treatment options include counseling, medication like antidepressants, and self-care techniques.