What is the exact definition for high blood pressure or hypertension?

Abnormally high BP. Current data suggest hypertension exists when ones blood pressure remains above 125/80. That is, there are adverse effects upon ones heart, brain and kidneys when ones blood pressure remains higher than this level of systolic and diastolic blood pressure.
>140/90 or >130/85. Hypertension is when your blood pressure is >140/90, unless one has heart disease or diabetes, in which case the blood pressure should be <130/85.

Related Questions

What's the difference between high blood pressure and hypertension?

Almost same. High BP is a single reading that can go up temporarily from exercise, stress, pain or illness. Hypertension is a treatable diagnosis of repeated high BP readings > 140/90 without acute stress. Other than that they are often used to mean the same thing. Read more...
Measurement . High blood pressure is when blood pressure is measured to be high, which may occur in normal individuals too. Hypertension is a medical condition with consistently high blood pressure readings, which needs to be treated. Read more...

What are some medications you take for high blood pressure aka hypertension?

Many Groups. There are many groups of different meds which work the same way.Iwill list the groups and one or two exaples 1Beta Blockers like Atenolol and propranolol 2ACE iNIBITERS like Lisnopril and Caotopril 3Calcium Channel Blockers like Amlodipin and Cardizem 4 Angiotensin Receptor Blockers like Losartan and Valsartan 5 Peripheral Vasular Dilaters like Hydralazine&clonidin 6Renin Antagonist like Aliskiren. Read more...