Heat exhaustion is most commonly indicated by which symptom?

• A. Dizziness
• B. Confusion only at night
• C. Severe chest pain
• D. Rigid muscles

Answer: (A)

Heat exhaustion arises when the body overheats and loses fluids, and dizziness is the most common sign because dehydration lowers blood volume and blood pressure, reducing blood flow to the brain. That combination often makes you feel lightheaded or faint, especially when you stand up. You might also notice a headache, fatigue, nausea, sweating, and pale, clammy skin, but dizziness is the standout symptom that points to this condition. Confusion or disorientation can occur with heat stroke, which is more dangerous and usually involves altered mental status and other signs like very high body temperature. Severe chest pain suggests a heart or lung problem rather than heat exhaustion, and rigid muscles aren’t typical of heat exhaustion ( muscle cramps can happen, but rigidity isn’t a hallmark). So dizziness best indicates heat exhaustion. If you see someone dizzy in the heat, move them to shade, help them cool down, and provide fluids if they can drink. Seek medical help if symptoms worsen or don’t improve.