\”Heat Illness\” refers to a significant medical illness caused by the body\’s inability to cope with a specific heat load, and it includes heat cramps, heat exhaustion, heat syncope, and heat stroke.
Merriam-Webster Online Dictionary
heat exhaustion (noun)a condition marked by weakness, nausea, dizziness, and profuse sweating that results from physical exertion in a hot environment - called also heat prostration compare heatstroke
Overheating, Heat Stress, Thermal Fatigue, Heat Prostration, Hyperthermic Exhaustion
