Diabetes insipidus – NHS

Diabetes insipidus is a rare condition where you pee a lot and often feel thirsty. Diabetes insipidus is not related to diabetes, but it does share some of the same signs and symptoms. The 2 main symptoms of diabetes insipidus are: extreme thirst (polydipsia) peeing a lot, even at night (polyuria)

https://www.nhs.uk/conditions/diabetes-insipidus/