Which pair of conditions are classified as excessive heat disorders?

• A. Hypothermia and hyperthermia
• B. Heat exhaustion and heat stroke
• C. Dehydration and heat rash
• D. Heat cramps and heat burn

Answer: (B)

Excessive heat disorders are illnesses caused by exposure to high heat that overwhelm the body's ability to cool itself. The best match is heat exhaustion and heat stroke because they represent the recognizable progression of heat-related illness, from milder to life-threatening.

Heat exhaustion develops after prolonged heat exposure with dehydration and electrolyte loss. Common signs include heavy sweating, fatigue, dizziness, weakness, thirst, and a rapid pulse. If ignored, it can progress to heat stroke.

Heat stroke is the more dangerous stage, with a core temperature rising very high (often over 40°C), with little or no sweating, hot and dry skin, confusion or seizures, and potential organ damage. It demands urgent medical care.

The other choices mix conditions that aren’t both classic excessive-heat disorders. Dehydration and heat rash can accompany heat exposure but aren’t a pair of distinct heat disorders in the standard classification. Hypothermia and hyperthermia combine extremes of body temperature and include cold exposure as well as heat, so they don’t form a pair of excessive-heat disorders. Heat cramps can occur with heat, but they aren’t the primary pair typically grouped as the excessive-heat disorders alongside heat stroke.