Also called: Orthostatic hypotension; postural hypotension; head rush on standing; vasovagal fainting
Exercise strongly helps
Strength
Balance
The grey-out and head rush on standing up quickly. Blood pools in the legs and belly the moment you stand, and the calf and thigh muscles are the pump that returns it - so a weak pump, dehydration or a blood-pressure drug can leave the brain briefly short.
How common: About 5% of middle-aged adults and 20% of over-60s; up to half of care-home residents; a leading trigger of falls in older people
What it is
Standing sends around half a litre of blood downward under gravity. Normally the blood vessels constrict, the heart rate rises and the leg muscles squeeze it back within a couple of heartbeats. Orthostatic hypotension is when that correction is too slow or too small, and the brain gets a few seconds of reduced flow.
The single most useful thing to know is that tensing the leg and buttock muscles hard at the moment of standing raises blood pressure immediately - it is a physical countermeasure that works within the same second, and most people have never been told about it.
What it feels like
- Light-headed, grey or spotty vision for a few seconds after standing
- A whooshing in the ears, or sounds seeming distant
- Worst first thing in the morning, after a meal, or in hot weather
- Needing to hold something for a moment until it clears
- Occasionally actually fainting, usually with warning
What causes it
Most people have more than one of these at once, and they feed each other. Read the
list looking for the two or three that sound like your week rather than for the one
true answer — the ones that describe you are the ones worth acting on.
- Blood pooling in the legs and abdomen
- Gravity moves a large volume downward the instant you stand. The correction depends on vessel constriction, a heart-rate rise and the muscle pump - and if any of the three is slow, the brain briefly runs short.
- A weak calf and thigh muscle pump
- The leg muscles squeeze the deep veins and push blood back toward the heart. Weak legs are a weak pump, which is why this is so much more common in deconditioned and older people.
- Dehydration and low blood volume
- Less circulating volume means less margin. This is why it is worse in the morning, in hot weather and after alcohol - all of which reduce volume.
- Blood pressure medication
- Antihypertensives, diuretics and particularly alpha blockers used for prostate symptoms all blunt the standing reflex. This is one of the most common causes in older adults and it is usually adjustable.
- Age-related reflex blunting
- The baroreceptor reflex becomes less responsive with age, so the correction is slower even in a healthy older person.
- After a meal
- Blood is diverted to the gut after eating, particularly a large or carbohydrate-heavy one. Postprandial hypotension is common in older adults and often mistaken for something else.
- Prolonged bed rest or inactivity
- Even a few days lying down measurably impairs the standing response. It is why people feel so unsteady getting up after an illness.
- Vasovagal reflex
- A different mechanism producing similar symptoms: a reflex slowing of the heart and dilation of vessels triggered by pain, fear, heat, standing still for a long time or the sight of blood. It comes with nausea, sweating and pallor first.
- Autonomic neuropathy
- Diabetes and Parkinson's disease damage the nerves controlling blood vessels, so the correction fails at a more fundamental level. This version is more persistent and needs medical management.
- Anaemia and bleeding
- Reduced oxygen-carrying capacity or reduced volume from bleeding both produce this. New or worsening symptoms with fatigue or pallor should be investigated rather than managed at home.
Who tends to get it
- Older adults, in whom prevalence rises steeply
- Anyone on blood pressure medication, diuretics or alpha blockers for prostate symptoms
- People recovering from illness or a period in bed
- Anyone with diabetes or Parkinson's disease
- People who are dehydrated, in hot weather, or after alcohol
What makes it worse, and what settles it
Makes it worse
- Standing up quickly, particularly from lying
- Getting up in the night, when volume and blood pressure are lowest
- Hot baths, hot weather and alcohol
- Large meals, especially carbohydrate-heavy ones
- Prolonged bed rest or a long period of inactivity
Settles it
- Tensing the legs and buttocks hard as you stand, or crossing and squeezing the legs - it raises pressure within a second
- Standing up in stages: sit on the edge for a few moments, then stand
- Calf and thigh strengthening, which builds the pump itself
- Staying well hydrated, particularly in the morning and in hot weather
- Reviewing medication timing and dose with a doctor or pharmacist
What actually helps
The short version: On standing, blood pools in the legs and belly; the calf and thigh muscles are the pump that returns it. When the pump is weak, the person is dehydrated, or blood-pressure and prostate drugs blunt the reflex, the brain briefly runs short of flow. Tensing the leg muscles at the moment of standing raises the pressure immediately
Strength work: Legs: Calves: Gastrocnemius and Soleus; Legs: Quads; Glutes: Max; Chair Workout - seated marching and heel-toe raises done BEFORE standing; Hands, Fingers, Grip - a hard handgrip squeeze is itself a counter-maneuver
Stretching: Not primary
Massage: Not primary
Also worth doing: Counter-maneuvers the moment you feel it: cross the legs and squeeze, tense the thighs and buttocks, clench the fists, or squat; sit on the edge of the bed for a minute before standing; a large glass of water 15 minutes before getting up; sleep with the head of the bed raised; ask the prescriber to review blood-pressure, prostate and antidepressant drugs
What the evidence says: Physical counter-pressure maneuvers - leg crossing with muscle tensing, squatting, handgrip - are guideline-recommended and were shown in the PC-Trial to reduce vasovagal syncope; isometric limb tensing reduces the blood-pressure drop in older adults with orthostatic hypotension. Calf strength and hydration are the trainable half; medication review is the clinical half.
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Ready-made routineBalance & Fall Prevention
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activity in it carries the reason it is there.
The button below opens your Checklist with this routine already selected, so instead
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and Exercises, each with its checkbox, ready to tick as you work through
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Get it checked if…
Fainting with chest pain, palpitations, during exercise, or with no warning; a black-out with injury; dizziness with new weakness, slurred speech or double vision - emergency. New or worsening symptoms after a medication change - tell the prescriber
And whatever the body part: chest pain or unusual breathlessness on
exertion; a fever alongside the pain; unexplained weight loss; pain that is constant and
unrelated to how you move; new numbness, weakness or loss of bladder or bowel control; or
one calf that is swollen, warm and painful. Any of those, stop and get assessed.
How it usually goes
The physical countermeasures work immediately and the leg strengthening builds a better margin over six to twelve weeks. Medication adjustment often produces the largest single change and is worth asking about specifically. Fainting without warning, fainting during exercise, fainting with chest pain or palpitations, or dizziness with new neurological symptoms is a different and more urgent picture that needs prompt medical assessment rather than home measures.
Prevalence basis: AAFP orthostatic hypotension review; JACC state-of-the-art review; geriatric fall studies
Others the same routine covers
These share the Balance & Fall Prevention routine, so the work is the same. If one of them also
sounds like you, that is a reason to expect more from it, not less.
This is general information, not a diagnosis, and it cannot examine you.
If it matches you, use it to ask better questions of a clinician rather than to replace one.