This document defines hypertension and describes its causes, types, symptoms, diagnosis, treatment, and management. Hypertension, also called high blood pressure, is defined as a systolic pressure over 140 mm Hg or diastolic over 90 mm Hg. It has two main types: primary (essential) hypertension which has no identifiable cause, and secondary hypertension which is caused by an underlying condition like kidney disease. Treatment involves lifestyle changes and may include diuretics, beta blockers, ACE inhibitors, or calcium channel blockers to lower blood pressure. Regular monitoring of blood pressure and medication adherence are important for managing the condition and preventing complications like heart attack, stroke, or kidney failure.