In contrast to people, where primary hypertension (also
called essential hypertension) is most common, secondary hypertension is more common in cats.
When hypertension has no known cause, it may be
called essential hypertension, primary hypertension, or idiopathic hypertension.
Primary hypertension (which is also
called essential hypertension) is by far the most common form of hypertension, with over 90 per cent of all cases being attributed to this type.