A plain explanation of the head rush on standing, what usually drives it, and the patterns that deserve a proper look.
If you are asking "why do I get dizzy when I stand up", the likely answer is a short dip in blood pressure while your body catches up with gravity. For many people it passes within seconds. When it happens most days, lasts longer, or comes with a pounding heart and brain fog, it deserves a closer look.
I am Dr. Alireza Chizari, DC, DACNB, a board-certified chiropractic neurologist, and I practice functional neurology at California Brain & Spine Center in Calabasas. People describe this symptom to me in very similar words: the edges of the room go grey, the head feels hollow, and a hand goes out to the kitchen counter until it passes.
Some get it once in a while, after an afternoon on the couch. Others get it every morning getting out of bed, again in a checkout line, and have quietly started planning their day around it. This article is for both groups. It covers what is usually going on, what tends to be brief and common, and the patterns that point toward POTS or an inner-ear cause instead.
Key takeaway
Dizziness on standing commonly comes from orthostatic hypotension, a brief blood-pressure drop that usually lasts seconds or minutes. It is often harmless, but not always. Repeated episodes, a heart rate that climbs and stays high, or a spinning sensation with head movement are patterns worth evaluating. Sudden or severe symptoms need emergency care.
Why do I get dizzy when I stand up?
Usually, the answer to why do I get dizzy when I stand up is gravity. Standing shifts blood toward your legs and belly, and your nervous system has to tighten vessels and raise heart rate to keep blood reaching the brain. If that correction arrives late or falls short, you may feel lightheaded for a few seconds or minutes.
What happens in the first seconds of standing
When you move from lying or sitting to standing, a large volume of blood shifts downward almost at once. A review in Autonomic Neuroscience puts that shift at roughly 500 to 1000 mL, moving into the veins of the legs and the abdominal circulation. For a moment, less blood returns to the heart, and the heart has less to send upward.
The autonomic nervous system normally compensates. Pressure sensors in the large arteries, called baroreceptors, register the change and set off a reflex that raises heart rate and sympathetic activity, the fight-or-flight side of the nervous system that tightens blood vessels. In most people this happens quickly enough to go unnoticed. If the compensation arrives late or is not quite enough, the brain may get a brief shortfall in blood flow, and that shortfall is the lightheaded moment you feel.
When a head rush is usually a normal variant
The same review describes a brief jump in heart rate right after standing, one that settles within about the first 45 seconds, as likely a variant of initial orthostatic hypotension rather than POTS. If that matches what you feel, and it happens now and then, it is often part of normal physiology.
Is dizziness when standing up lightheadedness or vertigo?
Dizziness is a loose word, and the kind matters more than the word. Lightheadedness feels like the head emptying: vision greys or narrows, and you may feel close to fainting. It follows posture, starting as you rise and easing when you sit or lie down again. That pattern points toward blood pressure and the autonomic nervous system.
Vertigo is different. MedlinePlus describes vertigo as the feeling that you are spinning or that everything is spinning around you. When a spin is set off by head movement, such as rolling over in bed, it may point to benign positional vertigo, an inner-ear cause, and a repositioning maneuver is a recognized treatment for it.
Some people describe a bit of both, so the two are checked separately. If the spinning side is the one you recognize, there is more on the vestibular side of dizziness in a separate article.
Worth writing down before any appointment
Note whether the dizziness felt light or spinning, what position set it off, and roughly how long it lasted. If you own a home monitor, jot down your heart rate while seated and again after standing. A short log like this is far more useful in an evaluation than a description from memory.
What causes orthostatic hypotension?
Orthostatic hypotension is a drop in blood pressure that happens when you shift from lying down to standing, and MedlinePlus notes that this type of low blood pressure usually lasts only a few seconds or minutes. Common and often brief is the fair summary. Brief is still not the same as always harmless, which is why a repeated pattern is worth measuring.
How the blood pressure drop is measured
Clinically, orthostatic hypotension is identified when systolic pressure falls by more than 20 mmHg, or diastolic pressure by more than 10 mmHg, within three minutes of standing, with readings taken lying, sitting and standing, as the Cleveland Clinic summarizes. That is a criterion a clinician checks with a cuff and a clock. One reading on a home monitor is a useful clue, not a diagnosis.
Medications, age and other contributors
Heart medicines, including those prescribed for high blood pressure, can contribute to low blood pressure. Older adults, people with high blood pressure and people with Parkinson disease are among those more often affected. If you take a blood-pressure medication and the dizziness started after a new prescription or a dose change, raise it with the prescriber, and never stop or adjust a medication on your own.
Daily habits play a part too. Alcohol and heavy, high-carbohydrate meals are on the list of things worth limiting for people who get lightheaded on standing.
Why do I get dizzy when I stand up if my blood pressure is normal?
This is where POTS comes into the conversation. Postural orthostatic tachycardia syndrome causes the heart to beat faster than normal when you go from sitting or lying down to standing, and dizziness or lightheadedness on standing and brain fog are among its possible symptoms. The defining feature is the heart rate rather than a pressure drop.
The consensus definition, summarized in a CMAJ review, includes a sustained heart-rate rise of at least 30 beats per minute (at least 40 in people aged 12 to 19) within 10 minutes of being upright, without the blood-pressure drop of orthostatic hypotension. Diagnosis also requires ongoing symptoms and other causes ruled out, and it is made by a clinician.
Most people with POTS are women between about 15 and 50, though men can have it too. Significant illnesses such as viral infections, and physical trauma such as a head injury, are named as possible triggers. Dizziness on standing that began after an infection or a concussion is worth mentioning at any appointment for that reason.
If the racing heart is the part that bothers you most, the article on heart racing when standing goes deeper into the heart-rate side.
Dizzy most days when you stand?
A structured evaluation can measure what your heart rate and blood pressure do on standing, and separate lightheadedness from a spinning inner-ear cause.
Is it a normal head rush or something to check?
The answers to why do I get dizzy when I stand up tend to fall into a few patterns. The table sorts what is typical from what suggests something more, and shows what an evaluation looks at for each.
| Typical presentation | Patterns that suggest something more | What the evaluation looks at |
|---|---|---|
| Lightheaded for a few seconds after standing quickly | Episodes most days, or lasting minutes at a time | A symptom log: posture, time of day, what set it off |
| A brief heart-rate jump that settles within the first moments | A heart-rate rise that stays high the whole time you are upright | Heart rate lying and standing, tracked over several minutes |
| Little blood-pressure change once settled | A clear drop within three minutes of standing | Blood pressure lying, sitting and standing |
| Head feels light, vision greys briefly | The room spins with head movement, such as rolling over in bed | Positional testing for inner-ear causes |
| No recent illness or head injury | Began after a viral illness or a head injury, with brain fog | History of illness, injury and symptom onset |
| No new medications | A new or changed blood-pressure medication | Medication review, with any change left to the prescriber |
How is dizziness on standing evaluated in Calabasas?
A tilt table test, which measures heart rate and blood pressure as posture changes, is a main way POTS is diagnosed, and a standing test is also used. Both follow the same logic: record the body lying still, record it upright, and compare. The step-by-step version is in how POTS is diagnosed.
At California Brain & Spine Center, the neurodiagnostic assessment looks at the orthostatic picture (heart rate and blood pressure lying, sitting and standing), the vestibular picture (whether head position or movement sets off a spin), and the history that connects them, including illness, injury, medications and when the symptoms started. People come in from Calabasas, Woodland Hills and across the West Valley, and the aim is the same for each: find which pattern is present, or whether there is more than one, before any plan is discussed.
When the pattern turns out to be autonomic, it sits within the wider group of conditions known as dysautonomia, and the evaluation goes further into that side.
Some findings belong elsewhere. A heart rhythm concern goes to primary care or cardiology, and a neurological finding outside this scope is referred to medical neurology. The practice works alongside primary care, medical neurology, ENT and physical therapy.
What can help when you get dizzy standing up?
General measures may help with orthostatic dizziness while you wait to be evaluated. They are self-care rather than a treatment plan:
- Stand up more slowly, sitting on the edge of the bed for a moment before putting weight on your feet.
- Drink enough water across the day, and limit alcohol.
- Choose smaller meals, avoiding heavy, high-carbohydrate ones before long stretches on your feet.
- Try tensing your leg muscles for a few breaths before you stand.
- Ask about lower-body compression garments, which can reduce the gravity-driven shift of fluid on standing.
For people with POTS, the CMAJ review notes that regular aerobic exercise done lying or seated, used for reconditioning, is associated with improved cardiovascular hemodynamics, meaning how well the heart and blood vessels move blood around the body. That kind of program is set after evaluation.
Where benign positional vertigo is found, canalith repositioning, a guided sequence of head movements aimed at moving tiny displaced crystals in the inner ear (canaliths) back out of the balance canals, may be used when clinically appropriate after evaluation. Each piece depends on what the assessment actually shows.
When dizziness on standing is an emergency
Chest pain, fainting or a fall, trouble with balance or coordination, or a head injury from a fall alongside dizziness call for immediate care, not a routine appointment.
If symptoms come on suddenly or severely - a sudden severe headache, weakness, trouble speaking, vision loss, or fainting - that is an emergency. Call 911 or go to an emergency room, not a clinic appointment.
Questions about getting dizzy when you stand up
Is it normal to get dizzy when you stand up too fast?
Often, yes. A brief head rush after standing quickly is common, and a heart-rate jump that settles within the first 45 seconds is likely a variant of initial orthostatic hypotension. If you keep asking why do I get dizzy when I stand up because it happens most days, that pattern is worth measuring.
Does drinking more water help with dizziness when standing up?
It may help. Drinking enough water is one of the self-care measures listed for orthostatic dizziness, alongside standing up more slowly, limiting alcohol and avoiding heavy, high-carbohydrate meals. These are general measures, not a treatment plan. If you still wonder why do I get dizzy when I stand up, an evaluation can measure heart rate and blood pressure directly.
Does dizziness when standing up mean I have POTS?
Not necessarily. Dizziness on standing is a possible POTS symptom, but POTS requires a sustained heart-rate rise of at least 30 beats per minute in adults within 10 minutes upright, plus ongoing symptoms and other causes excluded. Blood-pressure drops and inner-ear problems can cause dizziness too, so the pattern is measured rather than assumed.
Should I stop my blood pressure medication if I get dizzy standing up?
No, not on your own. Heart medicines, including blood-pressure medications, can contribute to low blood pressure, but the decision to change one belongs to the prescriber. Bring a note of when the dizziness happens and how long it lasts, and ask whether the dose or timing needs review.
Where can I get dizziness on standing evaluated near Calabasas or Los Angeles?
California Brain & Spine Center in Calabasas sees people from across Los Angeles and the San Fernando Valley who keep asking why do I get dizzy when I stand up. The evaluation measures heart rate and blood pressure across positions and screens for inner-ear causes. When a finding belongs with cardiology or medical neurology, the referral goes there.
When someone asks me why do I get dizzy when I stand up, my first job is to find out which pattern is theirs. A brief head rush now and then is usually circulation catching up. A daily pattern, a heart rate that climbs and stays up, or a spin with head movement each points somewhere specific, and each can be measured.
I would rather you measure it than keep bracing for it every morning. If it has become part of your day, a complimentary consultation is a reasonable first step.
California Brain & Spine Center | (818) 649-5300 | Calabasas, CA 91302
Book online at californiabrainspine.janeapp.com
This content is for educational purposes only and is not medical advice. Consult a qualified healthcare provider about your specific situation.
Find out what happens when you stand
An evaluation in Calabasas records your heart rate and blood pressure across positions and checks for inner-ear causes, so the next step rests on your own measurements.
Dr. Alireza Chizari
This article has been medically reviewed for clinical accuracy by Dr. Alireza Chizari, DC, DACNB. Committed to evidence-based practice, Dr. Chizari ensures all content reflects the highest standards of functional neurology care.
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FAQ
What is Functional Neurology?
Functional Neurology is a healthcare specialty that focuses on assessing and rehabilitating the nervous system’s function. It emphasizes neuroplasticity—the brain’s ability to adapt and reorganize—using non-invasive, evidence-based interventions to improve neurological performance.
How does Functional Neurology differ from traditional neurology?
Traditional neurology often concentrates on diagnosing and treating neurological diseases through medications or surgery. In contrast, Functional Neurology aims to optimize the nervous system’s function by identifying and addressing dysfunctions through personalized, non-pharmaceutical interventions.
Is Functional Neurology a replacement for traditional medical care?
No. Functional Neurology is intended to complement, not replace, traditional medical care. Practitioners often collaborate with medical professionals to provide comprehensive care.
What conditions can Functional Neurology help manage?
Functional Neurology has been applied to various conditions, including:
• Concussions and Post-Concussion Syndrome
• Traumatic Brain Injuries (TBI)
• Vestibular Disorders
• Migraines and Headaches
• Neurodevelopmental Disorders (e.g., ADHD, Autism)
• Movement Disorders
• Dysautonomia
• Peripheral Neuropathy
• Functional Neurological Disorder (FND)
Can Functional Neurology assist with neurodegenerative diseases?
While Functional Neurology does not cure neurodegenerative diseases, it can help manage symptoms and improve quality of life by optimizing the function of existing neural pathways.
What diagnostic methods are used in Functional Neurology?
Functional Neurologists employ various assessments, including:
• Videonystagmography (VNG)
• Computerized Posturography
• Oculomotor Testing
• Vestibular Function Tests
• Neurocognitive Evaluations
How is a patient’s progress monitored?
Progress is tracked through repeated assessments, patient-reported outcomes, and objective measures such as balance tests, eye movement tracking, and cognitive performance evaluations.
What therapies are commonly used in Functional Neurology?
Interventions may include:
- Vestibular Rehabilitation
- Oculomotor Exercises
- Sensorimotor Integration
- Cognitive Training
- Balance and Coordination Exercises
- Nutritional Counseling
- Lifestyle Modifications
Are these therapies personalized?
Absolutely. Treatment plans are tailored to the individual’s specific neurological findings, symptoms, and functional goals.
Who can benefit from Functional Neurology?
Individuals with unresolved neurological symptoms, those seeking non-pharmaceutical interventions, or patients aiming to optimize brain function can benefit from Functional Neurology.
Is Functional Neurology suitable for children?
Yes. Children with developmental delays, learning difficulties, or neurodevelopmental disorders may benefit from Functional Neurology approaches.
How does Functional Neurology complement other medical treatments?
It can serve as an adjunct to traditional medical care, enhancing outcomes by addressing functional aspects of the nervous system that may not be targeted by conventional treatments.
How is technology integrated into Functional Neurology?
Technological tools such as virtual reality, neurofeedback, and advanced diagnostic equipment are increasingly used to assess and enhance neurological function.
What is the role of research in Functional Neurology?
Ongoing research continues to refine assessment techniques, therapeutic interventions, and our understanding of neuroplasticity, contributing to the evolution of Functional Neurology practices.
