Recurrent diabetes insipidus associated with pregnancy: pathophysiology and therapy.

Diabetes insipidus during pregnancy is an uncommon medical problem. We present a woman who developed transient central diabetes insipidus during two successive pregnancies. A water deprivation study with plasma arginine vasopressin concentrations confirmed the diagnosis and established the efficacy of 1-desamino-8-d-arginine-vasopressin (dDAVP). The patient was then successfully and safely treated through the second pregnancy with dDAVP.