What are common signs of shock?

Confusion and shallow breathing are indeed common signs of shock, which is a life-threatening condition that occurs when the body's tissues do not receive adequate blood flow. This can lead to inadequate oxygen and nutrient delivery to vital organs, causing changes in vital signs and mental status.

Confusion may arise due to reduced blood flow to the brain, impairing cognitive functions, while shallow breathing often results as the body attempts to compensate for decreased oxygen levels. When assessing an individual for shock, it's crucial to observe these signs, as they may indicate that immediate medical attention is necessary to prevent further deterioration.

The other options include symptoms that are not typically associated with shock. For instance, a severe headache and fever might suggest an infection or other medical issue rather than shock specifically. Rapid heartbeat and extreme fatigue can occur in shock but do not represent the best answer here when compared directly with confusion and shallow breathing. Similarly, loss of appetite and dizziness are not definitive signs of shock but can be related to a range of other health issues.