Final answer:
Stage 2 hypertension occurs when resting blood pressure is 140/90 mm Hg or higher, which can lead to severe health complications if not managed properly.
Step-by-step explanation:
Stage 2 hypertension is diagnosed when a person's resting blood pressure consistently exceeds certain levels. According to the American College of Cardiology and the American Heart Association's 2017 guidelines, normal blood pressure is less than 120/80 mm Hg (systolic/diastolic). Stage 2 hypertension is classified when the resting blood pressure is 140/90 mm Hg or higher. Since hypertension commonly shows no symptoms, it's referred to as a silent disorder, and without proper management, it can lead to severe health issues such as heart attacks, strokes, aneurysms, peripheral arterial disease, chronic kidney disease, or heart failure.