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Signs and symptoms of diabetes insipidus include:
Extreme thirst
Producing large amounts of diluted urine
Frequent need to get up to urinate during the night
Preference for cold drinks
If your condition is serious, urine output can be as much as 20 quarts (about 19 liters) a day if you're drinking a lot of fluids. A healthy adult typically urinates an average of 1 or 2 quarts (about 1 to 2 liters) a day.