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Anxiety is a physiological and psychological state characterized by cognitive, somatic, emotional, and behavioral components[1]. These components combine to create the painful feelings that are typically recognized as uneasiness, apprehension, or worry.[citation needed]Anxiety is a normal reaction to stress. It may help a person to deal with a difficult situation, for example at work or at school, by prompting one to cope with it. When anxiety becomes excessive, it may fall under the classification of an anxiety disorder.[2]Anxiety generally occurs without an identifiable triggering stimulus. As such, it is distinguished from fear, which occurs in the presence of an external threat. Additionally, fear is related to the specific behaviors of escape and avoidance, whereas anxiety is the result of threats that are perceived to be uncontrollable or unavoidable Layout made by lisag74