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Published on October 31, 2024

Understanding the Early Warning Signs of Kidney Failure

Kidney failure is a serious health condition that can often go unnoticed due to its subtle symptoms. As Dr. Frita, a board-certified nephrologist, points out, over 35 million adults in the United States have kidney disease, but nine out of ten aren’t even aware of it. By understanding these early warning signs, you can take steps to slow down the progression of kidney disease and possibly prevent it altogether.

1. Changes in Urine

One of the first signs of kidney issues can be unexpected changes in urine. This could mean producing less or more urine than usual, or having urine that is unusually foamy, dark, or foul-smelling. The presence of blood in the urine is a particularly alarming sign that should prompt immediate medical consultation.

2. Swelling or Edema

Unexplained swelling in areas like the feet, ankles, or even around the eyes can indicate kidney problems. This condition, known as edema, occurs when the kidneys are unable to properly regulate fluids and salts in the body.

3. Restless Leg Syndrome

Restless leg syndrome, characterized by an irresistible urge to move the legs, can also be a warning sign of kidney failure. This is often due to electrolyte imbalances or nerve disruptions associated with impaired kidney function.

4. Ammonia-like Breath

If your breath smells like ammonia or you have a metallic taste in your mouth, it might be a signal of advanced kidney disease. This symptom occurs when an imbalance in blood urea nitrogen levels causes uremia, which is a serious condition that requires medical attention.

5. Flank Pain

Experiencing pain in the lower back or flanks can be related to kidney disease. This discomfort might signify issues such as kidney stones, infections, or even masses that require professional evaluation.

6. Skin Changes

Changes in skin color or texture, such as dark patches, can be signs of a buildup of toxins. This often occurs when the kidneys fail to filter out certain substances, like phosphorus, which can also cause severe itching.

7. Fatigue and Sleep Problems

Unusual fatigue and problems like sleep apnea or daytime sleepiness often accompany kidney disease. Reduced kidney function affects hormonal balances, leading to anemia, which in turn causes chronic tiredness and sleep disturbances.

8. Persistent Itching

The accumulation of excess toxins in the body due to poor kidney function might cause relentless itching or rash-like symptoms on the skin. This can lead to significant discomfort and skin damage due to excessive scratching.

9. Persistent Hiccups

Persistent hiccups are an unusual symptom that can be related to kidney disease. High toxin levels can irritate the diaphragm nerve, resulting in continuous hiccups.

10. Cold Intolerance

Feeling unusually cold can be a result of anemia due to decreased erythropoietin production by the kidneys. This hormone is crucial for red blood cell production, and its deficiency can also lead to weight loss, which further contributes to cold intolerance.

11. High Blood Pressure

Finally, unexplained or uncontrollable high blood pressure is a common symptom linked to kidney issues. The kidneys play a significant role in managing blood pressure, and their dysfunction can easily lead to hypertension.


By recognizing these 11 early warning signs, you’ll be better equipped to recognize potential kidney problems before they become severe. Regular check-ups and being proactive about changes in your health with your physician can help you maintain a healthy life. Remember, early detection is key to preventing kidney failure.

# Kidney Disease

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Written By Orla

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