Very little or no urine
Blood in the urine
Severe pain in the side or back
Fever with painful urination
Severe swelling
Shortness of breath
Persistent vomiting
Sudden confusion or extreme drowsiness
These symptoms can have different causes, but some may require immediate treatment.
The Bottom Line
Your kidneys perform essential jobs every day, often without giving you obvious warning when something is changing.
Changes such as persistent foamy urine, unusual swelling, changes in urination, unexplained fatigue, itching, muscle cramps, or persistent side pain can have many causes. They do not automatically mean kidney disease, but they should not be ignored when they are new, persistent, or worsening.
The most reliable way to understand kidney health is through appropriate medical evaluation and testing—not through symptoms alone.
If you have risk factors for kidney disease or notice persistent changes in your urine, swelling, energy levels, or general health, consider speaking with a qualified healthcare professional.