Which of the following indicates that someone may be suffering from heat exhaustion?

Heat exhaustion is a condition that arises from prolonged exposure to high temperatures, often accompanied by excessive sweating and dehydration. A crucial indicator of heat exhaustion involves digestive system disturbances such as nausea and vomiting, which the body may exhibit as it struggles to cope with the heat and loss of fluid and electrolytes.

When someone is experiencing heat exhaustion, the body exhibits signs to alert others of the individual’s struggle to maintain proper temperature regulation. Nausea and vomiting suggest that the body is overwhelmed and is attempting to expel excess heat and fluids, making this an essential sign to look out for in potentially affected individuals.

The other symptoms mentioned, like shivering and cold skin, typically point to a different condition, such as heat stroke or hypothermia, rather than heat exhaustion. High blood pressure does not directly suggest heat exhaustion and may not even be a common response to overheating, while unusual fatigue and restlessness are more generalized signs and are not as specific as nausea and vomiting in indicating heat-related illnesses.