Diabetes insipidus (die-uh-BEE-teze in-SIP-uh-dus) is an uncommon disorder that causes an imbalance of fluids in the body. This imbalance makes you very thirsty even if you’ve had something to drink. It also leads you to produce large amounts of urine.
While the terms “diabetes insipidus” and “diabetes mellitus” sound similar, they’re not related. Diabetes mellitus — which can occur as type 1 or type 2 — is the more common form of diabetes.
There’s no cure for diabetes insipidus. But treatments can relieve your thirst and decrease your urine output.