generalized anxiety disorder: an anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling or lightheadedness or irritability etc that has lasted for more than six months
anxiety disorder: a cover term for a variety of mental disorders in which severe anxiety is a salient symptom
cereal: grass whose starchy grains are used as food: wheat; rice; rye; oats; maize; buckwheat; millet