Which physiological change is associated with severe anxiety?

Hyperventilation is a physiological change commonly associated with severe anxiety. When a person experiences intense anxiety, the body's fight-or-flight response is activated, leading to various physiological reactions. Hyperventilation occurs when a person breathes rapidly and deeply, causing an imbalance in oxygen and carbon dioxide levels in the blood. This can result in a range of symptoms, including tingling sensations in the extremities, dizziness, and a heightened sense of fear or panic. Understanding this reaction is crucial for managing and providing care for individuals experiencing severe anxiety, as it can exacerbate feelings of distress and lead to further complications if not addressed.

On the other hand, decreased heart rate, improved concentration, and increased appetite are not typically associated with severe anxiety. During anxiety, the heart rate usually increases, individuals often find it difficult to concentrate due to racing thoughts, and appetite may decrease due to stress responses, rather than improve. Recognizing hyperventilation as a key physiological response to severe anxiety can guide interventions that focus on helping the individual to regain control of their breathing and reduce anxiety levels.