The Hypertension Danger Zone
You are considered to have hypertension if your blood pressure measurements are 140/90 or higher, for either of the two numbers. At this level of blood pressure you may not have any symptoms. When blood pressure reaches 180/110 or higher, a serious condition known as a hypertensive crisis may occur. This can lead to stroke, kidney damage, heart attacks, or loss of consciousness. If you measure your blood pressure and it is this high, rest a few minutes and measure again. If it remains high, call 911. Symptoms of hypertensive crisis can include anxiety, nosebleeds, severe headache, and shortness of breath.