Final answer:
The medical term for blood pressure that is consistently lower than 90/60 mm Hg is hypotension.
Step-by-step explanation:
The medical term for persistently low blood pressure that is consistently lower than 90/60 mm Hg is hypotension. Unlike hypertension, which is chronically elevated blood pressure with measurements of 140/90 mm Hg or above, hypotension occurs when the blood pressure is not high enough to ensure adequate circulation to the body's tissues. This can lead to various health issues, such as ischemia or insufficient blood flow. It is important for individuals with either condition to follow their treatment plans to avoid serious health events like heart attacks or strokes.