[Pregnancy in diabetes insipidus--a case report with review of the literature].

A 32 year old I P II G with preexisting diabetes insipidus was treated with 1-(3-mercaptopropionic acid)-8-d-arginine vasopressin (DDAVP) during pregnancy. An otherwise normal pregnancy was marked only with an excessive weight increase. A healthy girl was delivered by secondary cesarean section at term. Postoperative the mother developed a water intoxication accompanying oxytocin-infusion. During nursing the diabetes insipidus improved significantly whereby DDAVP doses could be reduced to 20-10 percent. We suppose an overreaction to endogene oxytocin with an antidiuretic effect.