Get Niigata-shi, Japan typical March Weather including average and record temperatures from AccuWeather.com
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.
Hyperthyroidism may present with symptoms that mimic anxiety disorders. Such physical symptoms as increased sensitivity to heat, weight loss, restlessness, difficulty sleeping, and tremor suggest a physical cause for the anxiety-like symptoms. In some women, estrogen can produce anxiety symptoms.