What effects can exposure to extreme heat have on a person?

Exposure to extreme heat can lead to serious medical conditions such as heat exhaustion and heat stroke. Heat exhaustion typically occurs after prolonged exposure to high temperatures, where the body begins to lose its ability to regulate temperature effectively, leading to symptoms such as heavy sweating, weakness, and confusion. If left untreated, heat exhaustion can progress to heat stroke, which is a more severe condition where the body temperature rises to dangerous levels, potentially leading to organ failure and death. Recognizing these conditions is critical for first responders, as timely intervention can be life-saving.

While fainting, dizziness, dehydration, and fatigue are also related to heat exposure, they are more indirect effects or signs of the body's struggle to cope with extreme temperatures. Allergic reactions and hives are not typically associated with heat exposure, making them irrelevant to this context. Addressing heat exhaustion and heat stroke reflects an understanding of the most severe risks associated with extreme heat conditions.