Hypertension is a major modifiable risk factor and is treated stepwise with lifestyle and drugs.
Definition: office blood pressure 140/90 mmHg or more, confirmed by repeated measurement, home or 24-hour ambulatory monitoring (home average 135/85, ambulatory daytime 135/85). Grades 1-3; white coat and masked hypertension. Secondary causes to consider in young patients or resistant hypertension: renal parenchymal and renovascular disease, primary aldosteronism, phaeochromocytoma, Cushing syndrome, coarctation, sleep apnoea, drugs.
Assessment: risk factors, target organ damage (left ventricular hypertrophy, retinopathy, albuminuria, reduced eGFR). Treatment: lifestyle (salt below 5 g/day, weight loss, exercise, alcohol limits) and drugs: ACE inhibitor or ARB, calcium channel blocker, thiazide-like diuretic, usually as single-pill combinations; then add spironolactone or others for resistant hypertension. Targets: below 140/90 and, if tolerated, 120-130 systolic. Hypertensive emergency: severe hypertension with acute organ damage needs controlled intravenous lowering.