Whats the difference between diabetes mellitus and diabetes insipidus?

Diabetes insulitus and diabetes mellitus are totally different. Diabetes mellitus is what people think of when they hear "diabetes"--it is also called sugar diabetes. It comes in two forms Type I and Type II.

Diabetes insipidus (also called DI) is caused by the lack of the antidiuretic hormone (vasopressin) or the kidney's inability to respond to this hormone.

Diabetes mellitus is a metabolic disorder involving glucose and insulin production & utilization. It is what you think of when you hear "diabetes". Commonly called "sugar" diabetes.

Diabetes insipidus is a disorder involving the production and concentration of urine. It is often confused with D. mellitus. Called "water" diabetes to distinguish it from D. mellitus.

One is not related to the other. It is neither type 1 or type 2. It deals almost strictly with the kidneys. The symptoms can be simalar, but with DI there can be fever, vomiting and diareaha. There are 3 types of DI just as in Diabetes mellitus. DI cause abnomally huge amounts of urination. It can cause bedwetting and dehydration. High blood sugar is not a part of DI.

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Diabetes is derived from the Greek verb diabainein, which means to stand with legs apart, as in urination. Diabetes mellitus means, literally, honey-sweet urine (back when doctors would sometimes actually taste people's urine to make a diagnosis). Diabetes insipidus means bland or insipid urine.

Trying to explain what diabetes insipidus is can be challenging enough, without having it confused with "the other diabetes"-sugar diabetes (diabetes mellitus). Both share the word "diabetes" in the name, and both involve thirst and frequent urination, although in DI, urination is more frequent and in much greater volumes than the more common sugar diabetes, and the urine is subsequently extremely dilute and a very pale yellow color or almost clear. But beyond that, there's not much else in common. Some people with DI refer to their condition as either "central DI" or "nephrogenic DI" (depending on what's applicable), because it avoids the confusion caused when people not familiar with DI hear the word diabetes.


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http://diabetes-abc.blogspot.com
http://www.reddiabetes.com

one has sweet urine the other has a dilute urine.