hi i would like to ask what is the cause of my elevated blood pressure. im 28yrs old. 5 foot 7 ang 85 kg. im already done blood chemistry and my cholesterol level is in normal reading. so i wonder why i keep on experiencing like flushing behind my head, my finger felt like kind a cold sometimes i feel pain at the back of my head. whem i check my bp sometimes its 120/80 and sometimes its get higher like 140/90 when i got nervous. they say its anxiety only. i started feeling weird since aug. 19. after that i started exercise every morning and i avoid salt and oily foods. i want to know what is the cause of it. thank you.