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Causes

In most cases, it's not clear exactly what causes high blood pressure. But there are things that can increase your risk.

You might be more at risk if you:

Making healthy lifestyle changes can sometimes help reduce your chances of getting high blood pressure and help lower your blood pressure if it's already high.

Find out more about how to prevent high blood pressure

In about 1 in 20 cases, high blood pressure happens as the result of an underlying health condition or taking a certain medicine.

Health conditions that can cause high blood pressure include:

Medicines that can increase your blood pressure include:

In these cases, your blood pressure may return to normal once you stop taking the medicine or drug.