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Physical symptoms of test anxiety include sweating, shaking, rapid heartbeat, dry mouth, fainting and nausea. Milder cases of test anxiety can cause a sense of butterflies in the stomach, while more severe cases can actually cause students to become physically ill. Cognitive and behavioral symptoms can include fidgeting or outright avoidance of testing situations.
But if all three opinions concur, you can feel confident that stress, including anxiety-caused stress, is the cause of this symptom and not some other medical or biological problem. Causes relating to anxiety include: Hyper- and hypoventilation - taking in too much or too little oxygen. Hyper and hypoventilation can change the CO2 levels in the blood, which can cause a myriad of anxiety-like symptoms, such as dizziness. An active stress response - behaving in an apprehensive manner activates the stress response.