Polyuria in diabetes mellitus

Digestive tract
Associated diseases
Direct diseases


Polyuria in diabetes mellitusPolyuria can be considered permanent and constant symptom for diabetics. It is represented by increased urine formation due to decrease of reabsorbtion of water by uriniferous tubules, in this case organism excretes all liquid without its consumption. Every gram of glucose takes around 30-40 gr of urine with it.

Causes of both polyuria and diabetes mellitus is the increase of the sugar in urine. Sugar presence is the reason why uriniferous tubules cannot absorb liquid. Besides, in case of diabetes mellitus there is a spontaneous weakening of function of uriniferous tubules absorbing.

The main one and first symptom of polyuria is the frequent urination, in this case volume of urine does not decrease, as it happens, for example, in case of cystitis. Unlike the normal diuresis with 1200-1800 ml a day, if polyuria is diagnosed it can be about 8 to 10 liters of urine per day. It is noteworthy that density of urine of diabetics is not changed in spite of the volume due to the presence of sugar in urine. Also that thirst is another symptom which is, certainly, connected to frequent urination.

Treatment of polyuria, caused by diabetes mellitus, is conducted by controlling the blood sugar level. In case of insulin-dependent diabetes mellitus, upon injection of insulin, volume of urination goes down. Also, it is necessary to limit consumption of products, that lead to urination and\or irritate the bladder. And of course patients should control the volume of consumed liquids.

Very often kids have an acute start of diabetes mellitus. And quite often it is polyuria which is the symptom that draws the parents' attention. Usually, it is shown as enuresis, when a child, who has already got used to wake up for peeing, starts over to pee in the bed. It is important to pay attention to child’s health, when he or she complains on the dryness in the mouth and constant thirst. In case of these symptoms, there must be corresponding tests and medical examination conducted in order to avoid a sudden coma.