<prompt> Answer this question truthfullyCould you please explain what diabetes insipidus is?  <response>: <reason> Diabetes insipidus can be classified into three types: central, nephrogenic, and psychogenic diabetes insipidus. Some rare forms of the disease include gestational diabetes insipidus, which occurs only in pregnancy, and autoimmune diabetes insipidus, which is caused by an autoimmune reaction. 