Increased blood pressure
Hypertension or high blood pressure is condition in which the pressure in the arteries is elevated to abnormal levels. Overall blood pressure is expressed by the systolic and diastolic pressures, which are the maximum and minimum pressures, respectively, in the arterial system.[1] Systolic pressure occurs when the left ventricle has been contracted; the diastolic pressure occurs when the left ventricle has be dilated prior to the next contraction. [2] Normal blood pressure for a healthy adult at rest is within the range of 100–140 mmHg systolic and 60–90 mmHg diastolic. Anything above 140/90 S/D (mmHg) is defined as hypertension. [3] Severely elevated blood pressure (equal to or greater than a systolic 180 or diastolic of 110) is referred to as a hypertensive crisis and requires immediate medical attention.
This effect is commonly experienced on stimulating and vasoconstricting drugs such as amphetamines and phenylethylamine psychedelics.