Generalized Anxiety Disorder (GAD) is a mental health condition characterized by excessive, uncontrollable worry about a variety of topics, such as work, health, and social interactions. People with GAD often experience persistent anxiety that interferes with daily functioning and can lead to physical symptoms like restlessness, fatigue, and difficulty concentrating. The nature of GAD involves a constant sense of impending doom without a specific trigger, making it distinct from other anxiety disorders.