Which set of symptoms describes dehydration?

• A. Profuse sweating with pale skin
• B. Confusion; rapid heart rate; rapid breathing; passing out; lack of sweating; extreme thirst
• C. Shivering and cold skin
• D. Shortness of breath and chest pain

Answer: (B)

This question tests recognizing dehydration by its warning signs. Dehydration happens when fluids are lost faster than they’re replaced, and the body can start conserving fluids, which in turn can reduce sweating. The combination of confusion, a rapid heart rate, fast breathing, fainting, lack of sweating, and extreme thirst reflects the body's response to low fluid volume and potential circulatory compromise, making this set of symptoms classic for dehydration.

The other options describe different conditions: profuse sweating with pale skin can occur with heat exposure or intense exercise but isn’t the typical dehydration pattern of altered mental status and rapid pulse with fainting; shivering and cold skin point to hypothermia; shortness of breath and chest pain suggest cardiac or respiratory issues.