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Symptoms of Anxiety. Symptoms of Anxiety: Introduction. The symptoms of anxiety are due to the body's reaction to stress called the fright, fight or flight response. This reaction developed in early human evolution as a means to increase alertness and readiness to react to dangerous stressors, such as the threat of a man-eating predator.
(in-depth info on anxiety attacks starts here) Typically, anxiety symptoms can fit into one of two categories: physical symptoms and emotional symptoms. Physical symptoms of anxiety include physical reactions to the stress that others could notice. Emotional anxiety symptoms would include reactions to stress or a challenging situation that people on the outside usually cannot detect.