However, ordinary muscle strain and spinal problems are much more common causes of back pain.
Severe or persistent pain—especially when combined with fever, vomiting, blood in the urine, or difficulty urinating—requires prompt medical attention.
- Nausea or Loss of Appetite
Kidney disease can sometimes cause nausea, reduced appetite, or an unpleasant taste in the mouth, particularly when kidney function becomes significantly impaired.
This may happen because waste products accumulate in the bloodstream.
But nausea and appetite changes are also associated with countless other conditions, including infections, digestive disorders, medications, stress, and pregnancy.
Persistent unexplained symptoms should be evaluated instead of self-diagnosed.
- A Metallic Taste or Bad Breath
Some people with advanced kidney disease experience changes in taste or an ammonia-like odor to their breath.
This can occur when waste products accumulate in the bloodstream.
Still, unpleasant breath or a metallic taste is much more commonly linked to dental problems, dry mouth, medications, infections, or dietary factors.
