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.
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.