The person suffering from Diabetes insipidus will pass excessive amount of urine (up to or more than 3 liters every day). They are always feeling thirsty and thus are constantly drinking water. They will need to urinate in almost every 15 to 20 minutes. They will suffer from disturbed sleep and daytimes, due to frequent passing of urine.
Dehydration is the consequence of this disease and when it is left undiagnosed or treated, since it raises the sodium levels in the blood. This might, in turn, lead to tiredness, lethargy, confusion and even fits as well as coma. Blurred vision rarely happens. Amongst kids, Diabetes insipidus can affect the appetite, eating, weight gain and growth as well. Symptoms like fever, vomiting or diarrhea may also show.