Excessive secretion of ADH syndrome What are the performance and how to diagnose?

In addition to the performance of the onset of symptoms mainly water retention and hyponatremia in general lower than the serum sodium 130mmol / L sodium when <120mmol / L when unable to sleep loss of appetite nausea and vomiting irritability and even insane when sodium <110mmol / L when convulsion and even death in a coma as a result of water retention in general no more than 3 to 4 liters of water and transferred to the parts of cells and therefore no general edema 1. Hyponatremia generally low 130mmol / L, but increased urinary sodium than regular 20mmol / L 2. Urine osmotic pressure than plasma osmolality 3. No low-volume performance 4. Stringent water restrictions correct hyponatremia low osmotic pressure in plasma and high urine sodium 5. Can be found in the incidence of the original performance