If a person is dehydrated by something that cannot be gotten rid of, and drinking a lot of water solves some parts of dehydration but not others, due to losing the water by freqent urination, what might be some potential treatments to look into or ask the doctor about?

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    Apr 28, 2018 at 15:50
  • Okay, thank you. After I've looked at the links you shared, can I recover the lost reputation points by deleting this post?
    – Post169
    Apr 28, 2018 at 15:57
  • @CareyGregory How is this now?
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  • The ways to keep appropriate fluid volume vary based on cause. Advice for one cause could kill you if it's a different cause. This is too close to an advice request, otherwise too broad.
    – DoctorWhom
    Apr 29, 2018 at 9:29

1 Answer 1


Excessive urination (more than 3 liters of urine per day) is medically called polyuria.

Causes include:

  • Excessive drinking
  • Taking diuretic pills
  • Diabetes mellitus
  • Diabetes insipidus due to various brain or kidney disorders

A doctor will want to know:

  • What is an estimated amount of urine per day?
  • Any other symptoms, such as hunger, fatigue, etc.?
  • When did the problem start?

The doctor will then likely order various blood and urine tests to check for diabetes mellitus and other disorders. The doctor needs to make a diagnosis first, so at this point there is not much to discuss. The doctor can tell how much to drink.

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