What are the kinds of hypertension?

Many see below. Pre hypertension, mild , moderate, severe, systolic , diastolic, essential, secondary, renovascular, malignant, .
Many classifications. Systolic (upper number), diastolic (lower number), borderline or pre, stage 1 (mild), stage 2 (severe), stage 3 (especially severe - used in europe), white coat (only seen in the drs office), resistant (still elevated despite 5 drugs), malignant (causing serious symptoms like heart failure, encephalopathy or kidney failure), essential (cause unknown), secondary(cause known).