Only extremely elevated blood pressure (malignant hypertension) can, in rare cases, cause headaches, visual changes, fatigue, or dizziness, but these are nonspecific symptoms which can occur with many other conditions.
[9] Foods rich in potassium include banana, papaya, sweet potato, dark leafy greens, avocado, prune juice, tomato juice, oranges, milk, yogurt, dried beans such as navy, pinto and black beans, chickpeas, lentils, beef, pork, fish, nuts and seeds such as pistachio, almonds, pumpkin, flax and sunflower seeds.
[16] Careful monitoring for signs of end-organ damage or progression to hypertension is an important part of the follow-up of patients with prehypertension.
Monitoring at home or work at regular times each day helps to diagnose a patient with prehypertension or hypertension.
The American Heart Association website[18] says, "You may have what's called 'white coat hypertension'; that means your blood pressure goes up when you're at the doctor's surgery.
These charting methods provide print outs for the patient's physician and reminders to check blood pressure.
[20] Several long-term studies have suggested no significant increase in all-cause mortality over long periods of time for individuals falling within the prehypertensive range.
[26] Data from the 1999 and 2000 National Health and Nutrition Examination Survey (NHANES III) estimated that the prevalence of prehypertension among adults in the United States was approximately 31 percent and decreased to 28 percent in the 2011–2012 National Health and Nutrition Examination Survey.
Other risk factors include a family history of hypertension, a sedentary lifestyle, eating high sodium foods, smoking, and excessive alcohol or caffeine intake.