The patient has polyuria, polydipsia and sleep disturbance. The relative density of urine -1,001 to 1,003 (is low). Urine excretion - 5 to 20 liters/day (is high). The content of glucose in the blood is 5.0 mmol/l, there is no glucose in the urine. Computed tomography revealed damage in the hypothalamus. Probably diagnosis is:

(Probably diagnosis is)Diabetes insipidus

over 1800 to 2000 ml