If your blood pressure is found to be high during a reading, you will usually be advised to observe your blood pressure over a period of time. You could also address any lifestyle factors that may be contributing to the high reading.
The length of the observation period will depend on your initial reading and any other health risk factors or complications related to diabetes. If your blood pressure readings remain high after the observation period, treatment with medication is normally advised.
You can purchase machines that monitor blood pressure from the comfort of your home or while you are going about your activities. One of the reasons for monitoring your blood pressure yourself is because people can become anxious in clinics and anxiety can cause blood pressure to rise.