side effects of hypertensionpulmonary hypertension pathophysiologychronic hypertension pathophysiologydiastolic hypertension pathophysiologymalignant hypertension pathophysiologyhypertensive emergency pathophysiologyrenal hypertension pathophysiologyhypertensive urgency pathophysiologyportal hypertension pathophysiologybenign hypertension pathophysiologyhypertensive crisis pathophysiologyhypertension headache