Most of the people with higher blood pressures do not indicate any signs or symptoms. They may have high blood pressure for years without knowing about it. And during those years, the high blood pressure can do serious damage to the organs  Some patients with early-stages of the high blood pressure have milder symptoms, such as headaches, dizziness, blurred vision or nausea. They may also experience frequent nosebleeds. However, these signs and symptoms don’t usually occur until high blood pressure has become very advanced — even life-threatening.

High blood pressure is often called "the soft killer." People having high blood pressure normally have no idea until their actual blood pressure is discovered. They only look for medical care when they suffer symptoms caused by the damages to the organ, which results from a long-term period of high blood pressure. Usual types of damages caused to the organs include:

Heart attacks, heart failure, kidney failure, damage to the eyes with loss of vision, strokes and aneurysms.

People concerned about their blood pressure should have it checked regularly, especially if there is a family history of high blood pressure. Even if their blood pressure is fine, they can ask their doctor for advice on keeping it that way.