Which one of the following is not a symptom of hyperventilation?

Fever is not a symptom of hyperventilation. Hyperventilation occurs when a person breathes very quickly or deeply, which can lead to a decrease in carbon dioxide levels in the blood. This physiological change often causes symptoms such as tingling in the hands and feet, flushed skin due to increased blood flow and anxiety or stress-related over-breathing. While fever can indicate an underlying infection or illness, it is not directly caused by the hyperventilation process. Therefore, it stands out as the option that does not align with the typical symptoms associated with hyperventilation.