Early detection of water intoxication.

1. It has been estimated that between 3% and 6% of patients in psychiatric treatment settings are affected by water intoxication. Water intoxication with consequent hyponatremia can result in disturbing clinical conditions. 2. Early detection is an important factor because of the insidious nature and rapid development of this syndrome. 3. A risk analysis for the early detection of this serious condition has been developed. It is easily administered and effective in categorizing a patient's level of risk.