When kidneys can’t remove excess fluid, it starts accumulating in your body. This often causes noticeable puffiness in your lower legs, feet, or around the eyes.
Note: Swelling can also result from heart, liver, or vein issues, so a proper medical check-up is essential.
4. Shortness of Breath
Trouble catching your breath — especially during mild activity — can be linked to kidney issues.
Two possible reasons:
Extra fluid builds up in the lungs due to poor kidney filtration
Anemia (low red blood cells) caused by reduced kidney function
Don’t dismiss breathlessness, especially if it appears suddenly or worsens over time.
5. Unexplained Back Pain or Flank Discomfort
Kidney pain typically occurs in the lower back or sides, just below the ribs.
It might feel dull and persistent or sharp and stabbing — depending on the cause (e.g., kidney stones, infection, or inflammation).
Red flag: If the pain is one-sided, accompanied by fever, or paired with changes in urination.
6. Metallic Taste or Bad Breath
A build-up of urea (a waste product) in the bloodstream can affect your sense of taste and lead to uremic breath — a foul, ammonia-like odor from the mouth.
Other signs: Loss of appetite, aversion to protein-rich foods, or sudden weight loss.
7. Itchy, Dry Skin
Healthy kidneys help maintain a balance of minerals like phosphorus and calcium in your blood. When this balance is off, toxic buildup can cause severe dryness and itching.
Warning sign: Constant scratching, especially on the back or arms, without a visible rash.
8. Nausea and Vomiting
Feeling sick to your stomach without an obvious cause? Accumulated waste and toxins can trigger nausea, vomiting, and a general feeling of being unwell.
Chronic symptoms could indicate worsening kidney function and should be evaluated.
9. High Blood Pressure (Hypertension)
