Polyuria: The excessive passage of urine (at least 2.5 liters per day for an adult) resulting in profuse urination and urinary frequency (the need to urinate frequently).
- Nephrogenic diabetes insipidus -- a genetic disease
- Polycystic kidney disease -- another genetic disease
- Sickle cell disease
- Pyelonephritis -- infection of kidneys
- Amyloidosis -- deposits of a substance called amyloid in the kidney
- Sjogren syndrome, and