What are the symptoms of heat exhaustion?

Heat exhaustion is a condition that arises due to prolonged exposure to high temperatures, leading to a loss of fluids and electrolytes, often through sweating. The symptoms are primarily characterized by the body struggling to maintain a normal temperature. Pale skin indicates that blood flow is being redirected to vital organs, and this can occur alongside elevated body temperature because the body is unable to effectively cool itself through sweating.

The presence of pale skin combined with elevated body temperature ties closely to the physiological response to excessive heat and dehydration, which also can induce symptoms like weakness, fatigue, headache, and even nausea. This highlights the body's attempt to adapt and regulate itself under stress due to heat.

Other choices reflect symptoms that are either inconsistent with heat exhaustion or typically associated with different conditions, hence they do not accurately describe what one would observe in a case of heat exhaustion.