Changes in the feet can sometimes indicate kidney damage, as the kidneys play an important role in fluid balance, waste removal and overall body function. Here are five signs in the feet that may indicate kidney problems, based on information from medical sources:
Swelling (edema): Kidney damage can lead to fluid retention, which can cause swelling in the legs, ankles or feet. This happens when the kidneys fail to remove excess fluid that accumulates in the tissues. The swelling may feel soft or puffy and may pit when pressed (pitting edema).
Leg pain or cramps: Poor kidney function can disrupt electrolyte balance, especially potassium, calcium and magnesium, which can cause muscle cramps or pain in the legs. This is often more noticeable at night or while at rest.
Skin changes: Kidney damage can cause the skin on the legs to become dry, itchy or discolored. In advanced cases, the skin may develop a gray or yellow color due to waste buildup (uremia) or anemia, which is common in kidney disease.
Restless legs syndrome (RLS): People with kidney damage, especially those on dialysis, may experience RLS, a condition that involves an uncontrollable urge to move the legs, often accompanied by uncomfortable sensations such as tingling or crawling. It is associated with nerve damage or electrolyte imbalances.
Fatigue and weakness in the legs: Reduced kidney function can lead to anemia (low red blood cell count), which can cause fatigue and weakness in the legs. This can make it difficult to walk or stand for long periods of time.
These signs are not specific to kidney damage and may indicate other conditions, so medical evaluation is necessary for an accurate diagnosis. If you are experiencing these symptoms, consult a healthcare provider for tests such as blood tests or urine tests to assess kidney function.