Rias Ali MD PLLC · Patient Education
Download PDF Call (727) 943-5200
Language
Accessibility
OH Guide

Understanding Orthostatic Hypotension

When your blood pressure drops on standing — causes, risks, and how to manage it

Understanding Orthostatic Hypotension cover diagram
QR code linking to https://go.riasalimd.com/oh-guide
Scan to save this guide

Point your phone camera at the QR code, or visit go.riasalimd.com/oh-guide

Written by Rias KS Ali, MD FACC, Board-Certified Interventional Cardiologist · 4740 Mile Stretch Drive, Holiday FL 34690 · Updated August 2026

Online: https://go.riasalimd.com/oh-guide

Names & Terms You Will Hear

Plain-language meanings for the terms your care team may use.

TermMeaning
Orthostatic hypotension (OH)The medical term. 'Orthostatic' means linked to standing up. 'Hypotension' means low blood pressure. It is a drop of 20 points or more in the top number, or 10 points or more in the bottom number, within 3 minutes of standing.
Postural hypotensionAn older name for the same thing. It means your blood pressure falls when you change your body position.
Neurogenic orthostatic hypotension (nOH)A type caused by faulty nerves. It is seen in Parkinson disease and in nerve damage from diabetes. It is often more severe and harder to treat.
Initial orthostatic hypotensionA big drop in the top number in the first 15 seconds of standing, then a quick bounce back. It is common in young, healthy people and rarely needs treatment.
Delayed orthostatic hypotensionHere, blood pressure falls only after you stand for 3 minutes or more. A quick bedside check can miss it. It may need a longer check or a tilt-table test.
Postprandial hypotensionHere, blood pressure drops after meals. It is related but not the same. It is common in older adults and in people with nerve problems.
Tilt-table testA test for OH or fainting with no clear cause. You are strapped upright on a table. The team watches your blood pressure and heart rate.
A real tilt-table test in progress. The patient is strapped upright on the tilt table (TTT) while a non-invasive beat-to-beat monitor (NIBTB) tracks blood pressure and heart rate in real time on the PC monitor. This is the test used when a bedside standing check does not settle the diagnosis. Image: de Lange et al., Europace 2022 (CC BY 4.0).
A real tilt-table test in progress. The patient is strapped upright on the tilt table (TTT) while a non-invasive beat-to-beat monitor (NIBTB) tracks blood pressure and heart rate in real time on the PC monitor. This is the test used when a bedside standing check does not settle the diagnosis. Image: de Lange et al., Europace 2022 (CC BY 4.0).

What Is Orthostatic Hypotension?

Why It Matters

Treatment Options

Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.

Risks, Benefits, and Alternatives

Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.

Every choice has trade-offs. Use this table to start the shared decision conversation with your care team.

OptionRisksBenefitsAlternatives
Medication review and adjustment (always step 1)Some blood pressure, mood, or bladder drugs may need a lower dose or a swap. Your other health problems could flare if these drugs are stopped.Often the one step that helps the most. You may feel better in days. It is free, and it adds no new pills.You could try salt and compression first. This is fine, but it works more slowly. You could start midodrine. But wait on that until the drug review is done.
Lifestyle steps (fluids, salt, compression, slow stands, head-up tilt at night)Compression garments feel hot in summer. Salt can raise your blood pressure when you lie down. Do not add salt if you have heart failure.These steps work for 50 to 70 out of 100 people with mild or moderate OH. They do not clash with any drug. All major guidelines list them first.You could add midodrine. It works faster but is one more pill. Droxidopa is an option for nerve-caused OH. Or you could watch and wait if your OH is mild.
Midodrine (a blood-pressure-raising pill)It can raise your blood pressure if you take it too close to bedtime. It can cause goosebumps, scalp tingling, and trouble passing urine. You take it three times a day, with the last dose by 6 PM.It raises standing blood pressure by 15 to 25 points in studies. It cuts falls. It works for most types of OH.Droxidopa is favored for nerve-caused OH, such as in Parkinson disease. Fludrocortisone lasts longer but holds more fluid. Pyridostigmine has a mild effect and is used now and then.
Droxidopa (a drug your body turns into a blood-pressure booster)It can raise your blood pressure when you lie down. It can cause headache and dizziness. It costs a lot, and your insurance often must approve it first. You take it three times a day.The FDA approved it just for nerve-caused OH. It raises standing blood pressure in Parkinson disease and other nerve diseases.Midodrine costs less but is less exact. Fludrocortisone works more broadly but has more side effects. The two can also be paired.
Fludrocortisone (a fluid-holding pill)It can cause swelling, low potassium, and high blood pressure when you lie down. Do not use it if you have heart failure. Your doctor must check your potassium and weight.It builds up your blood volume. It helps when salt and water alone are not enough. You take one dose each morning.Midodrine acts faster and holds less fluid. Droxidopa is an option for nerve-caused OH. Or you could just add more salt if your OH is mild.

Common Misconceptions

MythReality
Feeling dizzy when I stand up is just getting older — nothing to worry about.Age does raise the risk of OH. But OH is not normal. It doubles the risk of falls, broken bones, and heart problems. It is a real condition. It needs a check and treatment.
My blood pressure pills can't be the cause — they're treating high blood pressure.Blood pressure drugs are one of the top causes of OH. The same pill that guards your heart can drop your standing blood pressure too far. The fix is often a change in dose, not stopping the drug.
Drinking more water doesn't help.Drinking fluids is one of the steps that helps the most. In some people, 2 cups of cold water 30 minutes before getting up raises the standing top number by 30 points or more.
If my blood pressure is fine sitting at the doctor's office, I don't have OH.A sitting reading cannot find OH. To find it, your nurse checks your blood pressure lying down, then again 1 minute and 3 minutes after you stand. Even then, delayed OH can be missed. You may need a tilt-table test.
Salt is bad — I should avoid it.For most people with OH and no heart failure, more salt is a must. The advice to cut salt is for the general public. People with OH usually need more salt, not less.
Compression stockings are uncomfortable and not worth it.Thigh-high or waist-high garments work well. (Calf-high ones do not.) Newer garments feel better than the old ones. Most people are surprised by how much they help once they try them the right way.
I should never have high blood pressure if I have OH.About 30 to 50 out of 100 people with nerve-caused OH also have high blood pressure when they lie down. Treating both at once is hard. That is one more reason your plan must be built for you.
If midodrine works, I should take it before bed too.Never. Do not take midodrine within 4 hours of lying down. Your last dose should be by 6 PM. Taking it before bed can spike your blood pressure and raise your stroke risk.

Possible Complications

Knowing what can go wrong helps you spot problems early. Most complications are uncommon, especially with treatment.

Where / WhatWhat Can Happen
Falls and fall injuriesThis is the most common and most serious risk. A broken hip, a head injury, or the loss of living on your own can start with one faint. OH triples the risk of falls in older adults.
FaintingPassing out when you stand is common in severe OH. Your doctor should always rule out a heart cause first. Do not blame OH alone.
Trouble thinkingEach time blood flow to the brain drops, your thinking can suffer. You may feel foggy or slow. Over time this may speed up memory loss in some people.
High blood pressure when lying downMany people with nerve-caused OH have high blood pressure when they lie down. This raises the risk of stroke and organ harm. Your plan must balance daytime symptoms with nighttime control.
Heart and stroke riskOH on its own raises the risk of stroke, heart attack, and heart death. It is a sign that your blood vessels are weak.
Lower quality of lifeFear of dizziness makes people do less and pull away from others. Low mood is common. Good treatment usually brings back both function and confidence.

Points to Know

Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.

If you remember nothing else, remember these key points.

When to Call Us — and When to Call 911

Shown in English for your safety — this section is not automatically translated. Confirm with your doctor or call the office.

If you are not sure, call. We would rather hear from you twice than miss a real problem.

Office: (727) 943-5200

Trusted Resources

Independent, evidence-based pages we recommend for deeper reading.

Sources Used to Build This Guide

Scan to visit RiasAliMD.com
Visit RiasAliMD.com
Scan to save Dr. Rias Ali contact
Save Contact

Read this guide in your language

EspañolSpanishالعربيةArabic中文ChineseFrançaisFrenchDeutschGermanΕλληνικάGreekKreyòl AyisyenHaitian CreoleעבריתHebrewहिन्दीHindiItalianoItalian
日本語Japanese한국어KoreanമലയാളംMalayalamفارسیPersianPolskiPolishPortuguêsPortugueseРусскийRussianTagalogTagalogதமிழ்TamilతెలుగుTeluguTiếng ViệtVietnamese

Automatic translation — not reviewed by a qualified medical translator and it may contain errors. The English version is the official one. For your medicines, symptoms, or an emergency, use the English or Spanish guide or call the office. In an emergency, call 911.