Which of the following conditions is characterized by feeling weak and fatigued due to high heat exposure?

Heat exhaustion is a condition that arises from prolonged exposure to high temperatures, often accompanied by dehydration, and is characterized by symptoms such as weakness, fatigue, dizziness, and sometimes even fainting. It occurs when the body loses a significant amount of water and salt, mainly through sweating, which disrupts the body's ability to regulate temperature effectively.

Individuals experiencing heat exhaustion may feel excessively tired and weak because their body is struggling to cool itself down in extreme heat, leading to a depletion of resources essential for maintaining physical performance. Signs can include heavy sweating, rapid pulse, pale or clammy skin, and nausea. It's crucial to distinguish this condition from others related to heat, as heat stroke, for instance, is a more severe condition where the body's temperature regulation fails completely, potentially leading to serious health complications. Recognizing the symptoms of heat exhaustion early allows for prompt treatment and recovery.