Diabetes Insipidus is a health disorder and is characterized by excessive fluid intake, high output of urine and feeling thirsty frequently. Diabetes Insipidus is of four types, namely pituitary diabetes insipidus, gestational diabetes insipidus, nephrogenic diabetes insipidus and primary polydipsia diabetes insipidus. Each type is different from the other and has a different cause.
Pituitary diabetes insipidus is the most common type and it is usually caused by the want of vasopressin. The posterior pituitary produces the hormone vasopressin which reduces urine and increases its concentration. Pituitary diabetes insipidus in either inherited or caused due to damage of the posterior pituitary gland. Gestational diabetes insipidus occurs if the placenta destroys the vasopressin hormone prior to the kidney using it.
Nephrogenic diabetes insipidus occurs when vasopressin is produced by the posterior pituitary but the kidney cannot respond. In primary polydipsia diabetes insipidus, malfunction thirst is regulated by the brain. This results in high fluid intake causing the vasopressin to be suppressed.