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Types and stages of hypertension
Key takeaways
- Stages describe how high your numbers are: elevated, stage 1, stage 2, severe.
- Types describe the pattern or cause: primary, secondary, white coat, masked, isolated systolic, resistant, and more.
- White coat and masked hypertension are found by comparing office and home readings — a good reason to keep a log.
- Malignant hypertension is an outdated name for a hypertensive emergency — call 911.
Stages of hypertension (AHA/ACC)
| Stage | Systolic | Diastolic | |
|---|---|---|---|
| Normal | Below 120 | and | Below 80 |
| Elevated | 120–129 | and | Below 80 |
| Stage 1 hypertension | 130–139 | or | 80–89 |
| Stage 2 hypertension | 140+ | or | 90+ |
| Severe / hypertensive emergency | Above 180 | and/or | Above 120 |
More detail in the blood pressure readings chart.
Types of hypertension
Primary (essential) hypertension
The most common type. It develops gradually with no single identifiable cause. Read about causes and risk factors.
Secondary hypertension
Caused by another condition or a medicine — such as kidney disease, sleep apnea, thyroid problems, adrenal tumors, decongestants, or NSAIDs.
White coat hypertension
Blood pressure is high in the doctor's office but normal at home, often because of the stress of the visit. Home readings or 24-hour ambulatory monitoring help confirm it. It still deserves follow-up.
Masked hypertension
The opposite: normal in the office but high at home or during daily life. It's easy to miss without home monitoring.
Isolated systolic hypertension
Only the top number is high (130 or more) while the bottom stays below 80. It's common in older adults as arteries stiffen, and it still raises cardiovascular risk.
Isolated diastolic hypertension
Only the bottom number is high (80 or more) while the top stays below 130. It's more often seen in younger adults.
Resistant hypertension
Blood pressure stays above goal despite taking three different types of blood pressure medicine (usually including a diuretic) at the right doses — or needs four or more to control. Doctors check for secondary causes, medicine side effects, and measurement errors.
Labile hypertension
Blood pressure swings noticeably over short periods, often with stress or emotion. A log of readings with notes on context helps your doctor understand the pattern.
Orthostatic (postural) hypertension
Blood pressure rises when you stand up. It's less common than orthostatic hypotension — a drop on standing that can cause dizziness (see low blood pressure).
Malignant hypertension (hypertensive emergency)
An older term for severely high blood pressure that's damaging organs — the brain, heart, kidneys, or eyes. Today it's called a hypertensive emergency: readings above 180/120 with symptoms like chest pain, shortness of breath, back pain, numbness, weakness, vision changes, or trouble speaking. Call 911.
High blood pressure in pregnancy
Includes chronic hypertension, gestational hypertension, and preeclampsia. These need care from your obstetric team; follow their monitoring plan.
Different conditions with "hypertension" in the name
Pulmonary, intracranial, portal, and ocular hypertension are separate conditions and aren't measured with an arm cuff. Learn the differences.
Why home readings matter
White coat, masked, and labile hypertension are all identified by comparing readings in different settings. Cardivo keeps your home cuff readings with notes, heart rate, and stress on one timeline, and exports a PDF your doctor can review.
This guide is general wellness education based on the public sources below. It is not medical advice, diagnosis, or treatment. Cardivo is not a medical device. If you think you are having a medical emergency, call 911.
Frequently asked questions
What are the 4 stages of hypertension?
Under AHA/ACC categories: elevated (120–129 and below 80), stage 1 (130–139 or 80–89), stage 2 (140+ or 90+), and severe hypertension above 180/120, which becomes a hypertensive emergency when symptoms are present.
What is white coat hypertension?
Blood pressure that's high in a clinical setting but normal at home. It's confirmed with home or 24-hour ambulatory readings.
What is resistant hypertension?
Blood pressure that stays above goal despite three different classes of blood pressure medicine at proper doses, usually including a diuretic, or that needs four or more medicines to control.
What is malignant hypertension?
An older term for a hypertensive emergency — severely high blood pressure (above 180/120) causing organ damage. It needs emergency care; call 911.
Sources
- American Heart Association — Understanding blood pressure readings
- NHLBI — High blood pressure: causes and risk factors
- American Heart Association — Home blood pressure monitoring