Diabetes insipidus is an uncommon disorder characterized by intense thirst, despite the drinking of fluids (polydipsia), and the excretion of large amounts of urine (polyuria).Diabetes insipidus is caused by abnormality in the functioning or levels of antidiuretic hormone (ADH), also known of as vasopressin.It is manufactured in the hypothalamus and stored in the pituitary gland, ADH helps to regulate the amount of fluid in the body. ADH is released from the pituitary gland which prevents the excretion of fluids from the body in the form of urine. There are four types of diabetes insipidus Central diabetis insipidus or Cranial Diabetis insipidus and Nephrogenic diabetes insipidus