Partial central diabetes insipidus

Partial central diabetes insipidus, also classified as partial arginine vasopressin deficiency, is an endocrine disorder of water homeostasis affecting children and adults

It is characterized by an incomplete deficiency in the hypothalamic synthesis, transport, or posterior pituitary secretion of antidiuretic hormone (arginine vasopressin), often arising from neurosurgery, head trauma, intracranial neoplasms, infiltrative diseases, or idiopathic causes Unlike complete forms, patients retain residual hormone secretion, allowing modest endogenous urinary concentration under osmotic stress Consequently, it clinically manifests as variable degrees of hypotonic polyuri...

It is characterized by an incomplete deficiency in the hypothalamic synthesis, transport, or posterior pituitary secretion of antidiuretic hormone (arginine vasopressin), often arising from neurosurgery, head trauma, intracranial neoplasms, infiltrative diseases, or idiopathic causes Unlike complete forms, patients retain residual hormone secretion, allowing modest endogenous urinary concentration under osmotic stress

Consequently, it clinically manifests as variable degrees of hypotonic polyuria, compensatory polydipsia, and an impaired renal ability to conserve free water, with a significant increase in urine osmolality following exogenous vasopressin administration