the ankles, feet, or around the eyes. Fluid retention often obscures veins rather than making them more prominent.
This is a key point that differentiates kidney dysfunction from other conditions. If there is a real kidney problem, it is much more likely to show swelling due to fluid accumulation in soft tissues than simply an increased visibility of the venous network in the hands.
Relationship between hydration and vascular visibility
Hydration plays a two-way role. Dehydration can cause the skin to lose firmness, but it also reduces blood volume, sometimes
