Heat Exhaustion or Heat Stroke? Exposure to extreme heat can have many direct effects on human health (heat stroke, reduced labor productivity), as well as indirect effects (promoting air pollution and increasing asthma attacks, overloading power grids requiring rolling blackouts). Negative health outcomes occur if an individual is exposed to the hazard and has not sufficiently adapted to reduce sensitivity. Higher summertime temperatures are linked to an increased risk of illnesses and death, particularly among certain groups including children, emergency responders, older adults, outdoor workers, athletes and pets. Know the difference between Heat Exhaustion and Heat Stroke! Heat Exhaustion includes dizziness, thirst, heavy sweating, nausea and weakness. It can lead to heat stroke. Immediate action should be taken including moving person to a cooler area, loosening clothing, sipping cool water, and seeking medical help if symptoms do not improve. Heat Stroke includes confusion, dizziness, and becoming unconscious. It can cause death or permanent disability if emergency treatment is not given. Immediate action should be taken including calling 911, moving person to a cooler area, loosen clothing and removing extra layers, and cooling with water or ice. Know the signs and stay cool, stay hydrated and stay informed!