Nearly half of American adults have high blood pressure, but only 1 in 4 have it under control. Hypertension often produces no symptoms at all until it causes a heart attack, stroke, or kidney failure. That's why it's called the "silent killer."
When to See a Doctor
🚨 Seek care urgentlyGet your blood pressure checked at least once a year if you're over 40, or if you're at risk. Call 911 or go to the ER immediately for: severe headache, chest pain, shortness of breath, sudden vision changes, or face drooping — these can signal a hypertensive crisis or stroke.
Early Warning Signs
1 symptomNo symptoms at all
Hypertension is called the "silent killer" because most people have zero symptoms. Regular blood pressure checks are the only way to detect it early.
Common Symptoms
3 symptomsHeadaches (especially in the morning)
Severe or persistent headaches — particularly on waking — can indicate dangerously elevated blood pressure, though most hypertension causes no head pain.
Nosebleeds
Frequent or hard-to-stop nosebleeds can sometimes signal high blood pressure, though they have many causes.
Dizziness or lightheadedness
Some people feel dizzy with hypertension, especially when standing quickly. This can also be a medication side effect.
Advanced Symptoms
2 symptomsShortness of breath
As hypertension strains the heart and lungs, breathlessness during routine activities may develop.
Vision changes
Chronically high pressure damages blood vessels in the eyes (hypertensive retinopathy), causing blurred or double vision.
Emergency Signs — Seek Immediate Care
1 symptomChest pain or pounding heartbeat
Chest tightness or a racing heart may indicate the heart is under significant stress from high blood pressure. Seek immediate care.
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