Hipertonia primaryjna (Poprzednio znana jako Hipertonia podstawowa lub Hipertonia esencjalna).

High blood pressure that doesn't have a known cause is called essential or primary hypertension. In contrast, secondary hypertension has a known cause. The difference between primary hypertension and secondary hypertension is the causes related to each. Primary hypertension does not have a definitive cause, while secondary hypertension has a known cause. Both primary and secondary hypertension result in high blood pressure.