Anxiety is a feeling of apprehension or fear that lingers. The source for this uneasiness is not always known or recognized which adds to the distress: "Everything stresses me out." "I am always worried."  
                    
                 
                  
                 
                
                
               
               
                
                    
                        Alternative Names
                    
                          Feeling uptight; Stress; Tension; Jitteriness; Apprehension