Which of the following is NOT a sign of dehydration in older adults?

• A. Dry mucous membranes.
• B. Increased urine output.
• C. Skin tenting (decreased turgor).
• D. Dizziness.

Answer: (B)

When the body is dehydrated, it conserves water by the kidneys, producing less urine that is more concentrated. That volume loss can lead to dry mucous membranes, skin that tents or loses elasticity, and dizziness from reduced blood volume. Increasing urine output would indicate the opposite situation—either adequate hydration or diuresis from another cause—so it is not a sign of dehydration. In older adults, signs can be subtler, but the fundamental physiology remains: dehydration tends to lower urine output rather than raise it.