When kidneys can’t remove waste and excess phosphorus, toxins build up in the blood, causing severe, unrelenting itchiness—often on the back, arms, or legs.
5. Metallic Taste in Mouth or Ammonia Breath
Known as “uremic fetor,” this occurs when waste accumulates in the blood (uremia). Food may taste off, and you might lose appetite or feel nauseous.
6. Shortness of Breath
Fluid buildup from poor kidney function can collect in the lungs. Anemia (from low red blood cells) also reduces oxygen delivery, making you feel winded—even at rest.
7. Muscle Cramps or Leg Twitches
Electrolyte imbalances (like low calcium, high potassium, or low sodium) caused by kidney dysfunction can trigger painful cramps, spasms, or restless legs.
8. High Blood Pressure That’s Hard to Control
Kidneys and blood pressure are deeply linked. Damaged kidneys can’t regulate fluid and hormones properly, causing hypertension—which, in turn, further damages the kidneys. It’s a dangerous cycle.
9. Nausea, Vomiting, or Loss of Appetite
As toxins build up in the bloodstream, your digestive system reacts. Many people mistake this for a stomach bug—but if it’s ongoing, kidney issues could be the root cause.
