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Diabetes Mellitus is characterised by chronic hyperglycaemia due to absolute loss of insulin (Type I) or a resistance to it (Type II) . Insulin receptors normally allow glucose to enter each cell from the blood. Without insulin being received, the glucose meant for the cells remains trapped in the blood.

Thus in a diabetic, we have too much glucose in the blood (hyperglycaemia). Beyond a certain level of excess, the glucose becomes dangerous in the blood and is therefore extracted by the kidneys and ends up in the urine.

As the urine is loaded with extra glucose it becomes more concentrated. Osmotic pressure pulls extra water into the urine to keep its concentration closer to that of the surrounding tissue, leading to higher volume of urine.

Hence polyuria (increased volume of urine) is experienced by the diabetic.

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โˆ™ 2013-10-16 12:37:51
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Q: Why does polyuria occur with diabetes mellitus?
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Related questions

What are the cardinal signs of diabetes mellitus the 3 p's?

Polydipsia, Polyphagia, Polyuria


What are the three p's of diabetes mellitus?

1. polyphagia 2. polyuria 3. polydipsia


What are 3 symptoms of diabetes mellitus?

The 3 triad symptoms of Diabetes in Polydypsia, Polyphagia, and Polyuria. Polydypsia is excessive thirst, Polyphagia is excessive hunger and Polyuria is excessive urination.


Why does polydipsia occur with diabetes mellitus?

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chronic renal failure


What is the definition of the word 'polyuria'?

The word polyuria refers to a condition where a person has an abnormally large production of urine. It can be caused by "diabetes mellitus" or by drinking too many diuretic substances.


Symptoms of diabetes mellitus?

polydipsia, polyuria, polyphagia otherwise known as the three polys. Excessive hunger, thirst and urination.


What do 3ps mean in diabetes mellitus?

Polyuria- frequent urination Polydipsia- excessive thirst Polyphagia-excessive hunger Polyuria- frequent urination Polydipsia- excessive thirst Polyphagia-excessive hunger


Polyuria is a common symptom of diabetes mellitus?

Yes, but only in untreated diabetes.Polyuria (frequent urination) is part of a classic triad seen with untreated diabetes mellitus. This triad includes polyuria (frequent urination), polydypsia (frequent thirst), & polyphagia (frequent hunger). This triad is often seen with the paradoxical combination of polyphagia and weight loss.


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Rapid weight loss, excessive thirst, hunger, and urination.The 3 main symptoms of Diabetes Mellitus are1.Polyuria - frequent urination2.Polydipsia - Excessive thirst3. Polyphagia - excessive hunger or eating


Which one is hereditary out of Diabetes insipidus and Diabetes mellitus?

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Give the symptoms for diabetes Mellitus?

The most common symptom is the diabetes triad. The 3 P's namely Polyuria or excessive urination, Polydypsia or excessive thirst and Polyphagia or excessive hunger.

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