A large share of falls happen within seconds of standing up. Not while walking, not on the stairs — in the first moments after rising from a bed or a chair.
There is a specific, measurable, and often treatable reason for that, and it has a name: orthostatic hypotension. It is one of the few fall risk factors that can be confirmed with a blood pressure cuff and a chair.
What It Is
When you stand, gravity pulls roughly half a litre of blood down into your legs and abdomen. Your body is supposed to respond within a second or two — tightening blood vessels and raising heart rate to keep pressure to the brain steady.
With age, and with certain medications, that response slows or weakens. Blood pressure drops instead of holding. For a few seconds the brain receives less blood than it needs.
Clinically, orthostatic hypotension is defined as a sustained fall of at least 20 mmHg in systolic pressure (the top number) or at least 10 mmHg in diastolic pressure (the bottom number) within three minutes of standing.
What It Feels Like
This is where it gets missed, because people rarely describe it in terms a clinician recognises.
- Lightheadedness or a swimmy feeling on standing
- Vision going grey, dim, or narrow for a moment
- A brief unsteadiness that passes in a few seconds
- Weakness in the legs immediately after rising
- Neck or shoulder aching after standing — sometimes called coat-hanger pain
- Feeling worse in the morning, in hot weather, after a hot bath, or after a large meal
The critical detail is the timing. This is not general dizziness. It happens on standing, and it passes. Many people have experienced it for years and filed it as “getting up too fast” rather than as a symptom.
It can also be silent. Some people have a substantial measurable drop with no sensation at all — and they are at risk precisely because they have no warning.
Why It’s Missed
Blood pressure at a routine appointment is taken sitting down, once. Orthostatic hypotension is invisible to that measurement by definition. It only appears when pressure is taken lying or sitting, and then again after standing.
The World Guidelines for Falls Prevention and Management include lying and standing blood pressure in the recommended multifactorial assessment for anyone at fall risk. In practice it is one of the more commonly skipped items.
If it is strongly suspected but a standard cuff doesn’t detect it, the guidelines note that referral for beat-to-beat measurement is worthwhile — the association between falls and orthostatic hypotension is more consistent when measured that way, because a standard cuff can miss a drop that happens and recovers between readings.
The Common Causes
Medication is the leading modifiable cause, which is why this page sits under the medications guide.
- Blood pressure medications of most classes, particularly around a dose increase
- Diuretics — water tablets, which reduce circulating volume
- Alpha-blockers, including several prescribed for prostate symptoms
- Nitrates for chest pain
- Antidepressants, especially older tricyclics
- Parkinson’s disease medications
- Alcohol, which dilates blood vessels
Non-drug contributors include dehydration, hot weather, prolonged bed rest or illness, autonomic nerve damage from long-standing diabetes, and Parkinson’s disease itself.
Post-prandial hypotension deserves separate mention. Blood pressure can drop measurably in the hour after eating, as blood diverts to the digestive system. It is common in older adults and explains falls that reliably happen after lunch.
Measuring It at Home
You can check this yourself with a home blood pressure monitor. Doing it properly matters more than doing it often.
- Lie down flat for five full minutes. Not sitting — lying. Rushing this step is the most common reason a home check misses the problem.
- Take a reading while still lying down. Write down both numbers and the heart rate.
- Stand up. Have someone nearby, or stand next to something solid you can hold.
- Take a reading at one minute standing. Keep the cuff arm relaxed at heart height.
- Take another at three minutes standing.
- Note any symptoms at each point, even mild ones.
Do this on three different days, ideally including one first thing in the morning, when it is usually worst. A single normal reading does not rule it out.
If you feel faint at any point, sit or lie down immediately. The measurement is not worth a fall.
The Log
Print this, fill it in over a few days, and take it to your appointment. A completed log is far more useful than a description from memory.
Lying and Standing Blood Pressure Log
Lie flat for five minutes before the first reading. Record both numbers. Stop and sit down if you feel faint.
| Date | Time | Lying (after 5 min) | Standing — 1 min | Standing — 3 min | Symptoms |
|---|---|---|---|---|---|
What counts as a drop: 20 or more off the top number, or 10 or more off the bottom number, within three minutes of standing.
Medications I take:
Anything started or changed recently:
Falls or near-falls in the past year:
To ask: Do these readings show orthostatic hypotension? Could any of my medications be causing it? Should any dose or timing change?
Senior Health News · dontfall.com · Educational information only, not medical advice. Never stop or change a medication without speaking to your doctor or pharmacist.
What Helps
Treatment starts with the medication review, because the cause is so often on the prescription list. Beyond that, several habits reliably reduce the drop.
Rise in stages. Sit on the edge of the bed for thirty seconds before standing. Then stand, hold something, and wait a few seconds before walking. This one change addresses the single riskiest moment of the day.
Pump your ankles before you stand. Ten flexes of the feet while still sitting pushes blood back up out of the legs. It sounds trivial and it measurably helps.
Drink enough fluid. Dehydration makes this worse, and thirst becomes a less reliable signal with age.
Watch the after-meal window. If you drop after eating, smaller and less carbohydrate-heavy meals help, and it’s worth sitting for a while before getting up.
Be careful with heat. Hot baths, hot showers, and hot weather all widen blood vessels and worsen the drop.
Ask about compression stockings and raising the head of the bed. Both are standard measures with reasonable support, and both need to be discussed with a clinician rather than self-prescribed.
What Not to Do
Do not stop or reduce a blood pressure medication on your own, even if you’re confident it’s the cause. Some cannot be stopped abruptly without a rebound rise, and untreated high blood pressure carries its own serious risks. Bring the log and let a clinician make the adjustment.
And do not respond to this by moving less. Prolonged bed rest and inactivity make orthostatic hypotension worse — the cardiovascular reflexes that fail here are the same ones that regular activity keeps sharp. The answer is standing up more carefully, not standing up less often.
Related Guides
- Medications That Increase Fall Risk — the full guide this page belongs to
- How to Build a Complete Medication List
- Vision, Hearing & the Inner Ear — telling lightheaded apart from spinning
- After a Fall
When to Speak to a Doctor
Make an appointment if you feel lightheaded or dim-sighted on standing, if your log shows a drop of 20 systolic or 10 diastolic, if you have fallen shortly after standing, or if symptoms began after a medication change.
Seek care promptly for fainting or near-fainting, falls with loss of awareness, or lightheadedness accompanied by chest pain, palpitations, or breathlessness.
Sources
- Montero-Odasso M, van der Velde N, Martin FC, et al. World guidelines for falls prevention and management for older adults: a global initiative. Age and Ageing, 2022. Age and Ageing
- Improving Orthostatic Hypotension Screening in Fall Prevention: A Two-Cycle Audit on Falls Assessment and Lying and Standing Blood Pressure Measurement. PMC
- van der Velde N, Seppala LJ, Hartikainen S, et al. European position paper on polypharmacy and fall-risk-increasing drugs. European Geriatric Medicine, 2023. Springer
Senior Health News publishes free educational guides on fall prevention, home safety, and healthy aging. This page is for general information only and is not medical advice. It does not replace evaluation by a qualified healthcare professional, and no product is sold or recommended on this site. Never start, stop, or change a medication without speaking to your doctor or pharmacist.
Last reviewed: September 8, 2026.