Rishi, a college student, complains that he feels apprehensive and fearful most of the time but doesn't know why. Without warning, his hears begins to pound, his hands get icy, and he breaks out in a cold sweat. Rishi most likely suffers from a(n): dysthymic disorder dysthymic disorder obsessive-compulsive disorder obsessive-compulsive disorder generalized anxiety disorder generalized anxiety disorder phobia phobia