If the change is persistent and occurs alongside other symptoms, mention it to your healthcare provider.
- Trouble Concentrating or Feeling Mentally Foggy
Feeling distracted or having occasional difficulty concentrating is common.
However, significant kidney dysfunction can affect the nervous system and may contribute to confusion, difficulty concentrating, or unusual sleepiness as waste products accumulate.
Sudden confusion or a major change in alertness is not something to monitor at home—it can be a medical emergency.
Why Kidney Problems Can Be Difficult to Notice
One of the biggest challenges with kidney disease is that early kidney problems may cause few or no obvious symptoms.
A person can sometimes feel relatively healthy while kidney function is gradually changing.
That is why symptoms alone cannot reliably determine whether your kidneys are healthy.
Routine testing can provide much more useful information.
Common tests may include:
Blood creatinine
Estimated glomerular filtration rate (eGFR)
Urine albumin-to-creatinine ratio (UACR)
Blood pressure measurement
Urinalysis
These tests can help healthcare professionals assess kidney function and identify signs of kidney damage.
