Exertional heat stroke refers to heat stroke caused by what?

• A. Heat Stroke From Environment
• B. Heat Stroke From Activity
• C. Heat Stroke Due To Dehydration
• D. Heat Stroke Due To Fever

Answer: (B)

Exertional heat stroke happens when intense physical activity generates so much heat that the body’s cooling systems can’t keep up. The heat source is internal metabolic heat from the muscles during exercise or heavy work, not the surrounding environment alone. This differs from heat stroke caused by environmental heat, where high ambient temperatures and humidity overwhelm cooling even with minimal exertion. Fever is not the cause—fever suggests infection and involves a different mechanism. Dehydration can worsen the situation by impairing cooling, but the defining factor is the excessive heat production from activity. So, it is heat stroke caused by activity.