a river in E Asia, forming most of the boundary between N Manchuria and the SE Russian Federation, flowing into the Sea of Okhotsk. About 2700 miles (4350 km) long.
High blood pressure is dangerous, partly because there are no symptoms, so organ damage can occur slowly without being recognized. Renal hypertension can cause chronic kidney disease. This is a slow decline in kidney function. Until the condition is well advanced, chronic kidney disease also causes no symptoms. Because there are usually no symptoms, a doctor may suspect renal hypertension when someone has uncontrolled high blood pressure despite multiple medications or has unexplained chronic kidney disease.
Frequent episodes of anxiety-induced high blood pressure can cause as much damage to blood vessels, the heart, and kidneys as hypertension does. This damage, whether caused by multiple short episodes or gradually over time, is cumulative and results in increased risk of organ damage, heart attack, and stroke.