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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.
Anxiety can make you feel tense, cause nausea, lead to sweating, and so on. These are the symptoms that most people associate with anxiety. But anxiety can cause a host of unusual anxiety symptoms as well, and one of the more frightening anxiety symptoms is a feeling of having a lump in the throat.