Hypotonic polyuria

Hypotonic polyuria is a condition characterised by the excretion of large volumes of dilute urine, typically with a low osmolality, due to impaired renal concentrating ability. This condition is clinically significant as it can lead to dehydration, electrolyte imbalances, and increased thirst, impacting patient management in conditions like diabetes insipidus. A key association is with central diabetes insipidus, where insufficient antidiuretic hormone (ADH) leads to excessive urine output.