Why does hypertension cause polyuria?

Bp: Hypertension can cause polyuria when the renal vascular has not begun to obstruct. The higher pressure head can push filtration pressure up and cause polyuria until relative dehydration results. Htn can also be associated with diabetes and its polyuria. When hypertension is long standing and renal changes have progressed, the situation changes as filtration pressures and sodium retention result., .

Usually not: The treatment for hypertension usually includes a diuretic that will increase urine output temporarily after taking the medication. Hypertension in and of itself is not associated with polyuria. There are other causes that should be considered-- high blood sugars, high salt intake, and prostatism among others. Collect your urine for 24 hours. If it is more than 4 liters you have an issue.

It doesn't: Hypertension by itself does not usually cause excess urination. However, many of the medications used to treat hypertension contain diuretics that cause increased urination.

Ployuria and high BP: The most common cause of polyuria (p) is uncontrolled diabetes. Other causes are diabetes insipidus either central or nephrogenic. I suspect that the person with hypertension (h) and p is taking a diuretic agent which causes one to excrete a lot of urine to control h. If the person you are referring to takes diuretics, that could be the cause of p. If not, the person should see a physician.