Re: Diabetis insipidus
It depends on which types of diabetes insipidus you have. If you have central diabetes insipidus, that means the posterior pituitary gland is not secreting ddAVP and you can take it either IV, intranasally or by mouth to replace it. If however you have nephrogenic diabetes insipidus where the kidney itself isn't responding to the hormone, then the mainstay of therapy is to maintain your fluid intake, and sometimes you can be given thiazide diuretics which will prompt the kidney to reuptake more water at the proximal convoluted tubule.
Do you have any other health problems? Are you on any medications, especially lithium?