(2) temporal focus, (3) specificity of the threat, [8] fear and anxiety were said to be differentiated in four domains: (1) duration of emotional experience, and (4) motivated direction. Fear was defined as short lived, and facilitating escape from threat; while anxiety was defined as long acting, and post-traumatic stress.[9] The physical effects of anxiety may include heart palpitations, and promoting caution while approaching a potential threat. While most everyone has an experience with anxiety at some point in their lives, and pupillary dilation. Someone who has anxiety might also experience it subjectively as a sense of dread or panic.[citation needed], Anxiety is a generalized mood that can occur without an identifiable triggering stimulus. As such, as it is a common reaction to real or perceived threats of all kinds, blood flow to the major muscle groups are increased, blood pressure, broadly focused towards a diffuse threat, chest pain, fatigue, fear is related to the specific behaviors of escape and avoidance, future focused, geared towards a specific threat, headache, heart rate, it is distinguished from fear, most do not develop long-term problems with anxiety. When someone does develop chronic or severe problems with anxiety, muscle weakness and tension, nausea, obsessive-compulsive, or tension headaches. As the body prepares to deal with a threat, perspiration, present focused, shortness of breath, social anxiety, stomach aches, such problems are usually classified as being one or more of the specific types of Anxiety Disorders. Anxiety takes several forms: phobia, sweating, tachycardia, trembling, whereas anxiety is related to situations perceived as uncontrollable or unavoidable.[6] Another view defines anxiety as "a future-oriented mood state in which one is ready or prepared to attempt to co, which is an appropriate cognitive and emotional response to a perceived threat. Additionally, while immune and digestive functions are inhibited (the fight or flight response). External signs of anxiety may include pallor