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Contraction of heart ventricles generates blood pressure. It is the hydrostatic pressure that blood exerts against he wall of a vessel. Rigid vessels maintain blood pressure; less rigid vessels deform and blood pressure is lost.
High blood pressure is known to cause severe hypertension headaches, but aside from that there are no other obvious signs or symptoms of hypertension, earning it the name âsilent killerâ. Headaches caused by high blood pressure are not chronic, but when a person has an episode, it is usually quite severe. It takes a blood pressure of 200/100 or higher to trigger a headache episode, and this can qualify as a medical emergency requiring immediate attention.