When heart pumps out the blood, it circulates everywhere and delivers energy to body parts. Due to some reasons, this pressure will go above the 120/80 count. It will trigger a string of abnormalities and health issues. If you have high blood pressure, your body will react and show symptoms. If you see below symptoms, you must consult a doctor.
If you have high or low blood pressure, it means you should change your life style. Life style and food habits are the main reason behind changes in blood pressure. There are many articles online about the natural remedies and healthy food habits.
Headache is not a disease or health issue. Usually it is an indication of some other health problem. Prolonged headache can be a result of high blood pressure. If you have other symptoms of high BP, along with constant headache, then you should better consult a doctor.