Central Diabetes Insipidus (DI)

Central Diabetes Insipidus (DI) is a condition that affects the body's ability to regulate water balance. It involves the pituitary gland, which normally produces a hormone called antidiuretic hormone (ADH) or vasopressin. This hormone helps the kidneys conserve water by concentrating urine. In Central DI, the pituitary gland does not produce enough ADH, leading to excessive urination and intense thirst. This causes the body to lose too much water, which can lead to dehydration and an imbalance of important minerals. The main symptoms include frequent urination and extreme thirst. Managing fluid balance becomes difficult without enough ADH.

Central Diabetes Insipidus (DI) is a disorder characterized by a deficiency of antidiuretic hormone (ADH) secretion from the posterior pituitary gland. This deficiency results from damage to the hypothalamic-neurohypophyseal system due to causes such as trauma, tumors, infections, or autoimmune destruction. The lack of ADH impairs the kidney's ability to reabsorb free water in the collecting ducts, leading to the excretion of large volumes of dilute urine (polyuria) and compensatory polydipsia. The condition is distinguished from nephrogenic DI, where ADH production is normal but the kidneys are unresponsive. Central DI can cause significant hypernatremia and dehydration if fluid intake is inadequate. Diagnosis and management focus on identifying the underlying cause and replacing ADH function.