Which signs indicate dehydration and should prompt fluid intake?

• A. Thirst, dry mouth, dark urine, dizziness.
• B. Increased appetite and weight gain.
• C. Itchy skin and hair discoloration.
• D. Sudden drop in heart rate.

Answer: (A)

Recognizing dehydration means knowing the body's signals that it needs more fluids. Thirst is the primary cue your brain uses to tell you to drink. When you’re dehydrated, mouth tissues produce less saliva, so the mouth feels dry. The kidneys respond by concentrating urine to conserve water, which makes urine dark in color. Dizziness can occur when reduced blood volume from dehydration lowers blood flow to the brain, causing lightheadedness or faintness.

These signs point to needing fluids now. In contrast, increased appetite and weight gain aren’t typical dehydration signals, itchy skin and hair discoloration aren’t standard indicators of fluid loss, and a sudden drop in heart rate doesn’t fit the usual dehydration pattern ( dehydration often raises heart rate as the body tries to maintain blood pressure). If any signs are severe or you can’t keep fluids down, seek medical attention.