What is a symptom of heat exhaustion that indicates an ashen facial color?

Pallor refers to an abnormal paleness of the skin that can be observed in various medical conditions, including heat exhaustion. In the context of heat exhaustion, when a person experiences pallor, it may indicate that they are not getting enough blood flow to the skin, which can happen when the body is trying to cope with overheating. This ashen facial color can be particularly concerning as it signals that the body may be experiencing significant stress and is struggling to maintain normal physiological functions. Recognizing pallor along with other symptoms can help in the timely identification and treatment of heat exhaustion, preventing it from escalating into more severe heat-related illnesses.

The other symptoms, such as hyperthermia, dehydration, and nausea, are also associated with heat exhaustion, but they do not specifically convey the characteristic ashen facial color observed in pallor. Hyperthermia relates to elevated body temperature, dehydration signifies loss of body fluids, and nausea indicates gastrointestinal distress, none of which specifically highlight the change in skin color.