Long COVID
Long COVID: Symptoms, Causes, Diagnosis and Support
Long COVID, also called long-haul COVID or post-COVID condition, is a chronic condition that can follow SARS-CoV-2 infection and affect one or more body systems for at least three months.1
Symptoms can be physical, cognitive and emotional. They may persist, ease and return, or shift over time, and two people with the same diagnosis can look very different.
Alongside medical care, re-origin offers education, brain-body practices, coaching and community for the parts of life that build up around an unpredictable illness.
re-origin is complementary education and support. It does not diagnose or medically treat Long COVID.
Long COVID at a glance
- What it is
- An infection-associated chronic condition that can follow SARS-CoV-2 infection and affect one or more organ systems.1
- When it is recognised
- Generally when symptoms are present for at least three months after infection, having started within about three months of the illness.14
- Common symptom groups
- Energy and exertion, thinking and memory, breathing and heart, autonomic symptoms, pain, sleep, digestion, smell and taste.3
- Pattern
- Continuous, relapsing and remitting, or progressive. Symptoms can emerge, resolve and reappear over time.1
- Everyday impact
- Can limit work, study, household tasks and social life, and may amount to a disability.4
- Where re-origin fits
- Complementary education, brain-body practices, somatic tools, coaching and community alongside appropriate healthcare.
Lived experience
What Long COVID can feel like
People often describe an exhaustion that has little to do with ordinary tiredness — a heaviness that sleep does not fix, and that can arrive a day or two after an afternoon that felt manageable at the time.
Thinking can slow. Words go missing mid-sentence. A short flight of stairs raises the heart rate more than it should, or standing up brings a wave of dizziness that has to be waited out.
Then there is the unpredictability. A good week suggests things are turning a corner; the next fortnight takes it back. Plans get made cautiously. Work, study, parenting, relationships and independence all have to be renegotiated around a body that no longer gives reliable notice.
None of this is caused by worrying about it. Long COVID is a physical illness, and describing its emotional weight is not the same as explaining it away. Feeling disbelieved is itself a common part of the experience.3
Experiences people often describe
- Exhaustion that is different from ordinary tiredness
- Symptoms worsening a day or two after activity
- Slowed thinking or difficulty finding words
- Breathlessness or palpitations after little effort
- Dizziness or lightheadedness when upright
- Unrefreshing sleep, pain, sensory sensitivity
- Unpredictable good and bad days
- Losing confidence in what the body can do
Common Long COVID symptoms
More than 200 symptoms have been described, and no one has all of them. Grouping helps, but the groups overlap — and the mix, severity and timing differ from person to person and can change over months.3
Energy and exertion
Persistent fatigue that limits daily life, and symptoms that worsen after physical, cognitive or emotional effort.
Thinking and neurological
Difficulty concentrating or remembering — often called brain fog — along with headache, altered sensation, tingling or numbness.
Breathing and heart
Breathlessness, cough, chest pain and palpitations, sometimes triggered by activity that was previously easy.
Autonomic
Dizziness or lightheadedness on standing, a racing heart when upright, and other signs of autonomic dysfunction.
Pain and musculoskeletal
Muscle and joint pain, and weakness or reduced tolerance for physical tasks.
Sleep
Difficulty falling or staying asleep, and sleep that leaves you no more rested than before.
Digestive
Abdominal pain, nausea, diarrhoea and changes in appetite.
Smell and taste
Loss of smell or taste, or smells and flavours that register as distorted or unpleasant.
Emotional consequences
Low mood, anxiety and grief are common responses to prolonged illness, uncertainty and loss of function. They are consequences worth support in their own right — not an explanation for the physical illness.
Worth discussing with a healthcare professional
Persistent, new, severe or worsening symptoms after COVID-19 are worth raising with an appropriate healthcare professional. Assessment can evaluate what you are experiencing, identify associated conditions, consider other explanations, guide symptom-specific management and point towards rehabilitation or specialist support where that would help.2
This page is educational and cannot assess an individual situation.
The re-origin approach
Where re-origin may fit
Medical care handles the medical part: investigating symptoms, treating what can be treated, arranging rehabilitation. What it rarely has time for is the rest of it — the daily work of living inside an unpredictable body.
That gap is where most people struggle. Checking the body constantly for the next warning sign. Fear of the activity that caused the last crash. Not knowing what is safe to attempt. Stress responses that fire faster than they used to. Knowing what should help and finding it impossible to apply consistently. And doing all of it while feeling misunderstood.
re-origin is built for that work. Members get structured education on how the nervous system learns, guided brain-body practices, somatic tools, optional coaching, and a community of people who recognise what they are describing.
re-origin complements appropriate healthcare rather than replacing it.
What you can work on with re-origin
- Attention and familiar response patterns
- Fear that builds around symptoms and sensations
- Stress responses that have become automatic
- Avoidance, and rebuilding confidence at your own pace
- Body awareness and how you respond to activation
- Coping, self-trust and steadiness on bad days
- Actually applying brain-body tools in daily life
What is included
What members receive
Science-informed neuroplasticity programs, practices, coaching, and community for nervous system regulation. Built by people who've lived it. Designed to meet you where you are. Carried by community.
Brain retraining
Structured practices that give members opportunities to respond differently to familiar stress, attention and behavioural patterns.
Nervous-system regulation
Develop a wider repertoire of responses for moments when stress, uncertainty or activation feels intense.
Somatic practices
Work with physical activation and body-based responses through gentle practices that can be adapted to the individual.
Neuroplasticity education
Understand how experience, attention, repetition and learning can shape nervous-system responses over time.
Coaching
Get help applying the Program to real-life situations, setbacks and difficult grey areas. Coaching, not psychotherapy.
Community
Connect with people who understand persistent symptoms, nervous-system sensitivity and the effect they can have on everyday life.
Member experience
Cherrie's experience of Long COVID
Cherrie’s Long-COVID Recovery using Brain Retraining
Cherrie had COVID-19 for six months and then a severe reaction to the vaccine. In her own words: “I went from being a person who was always on the go, organizing events, working, and socializing, to someone who could barely leave the house.”
She describes the isolation as much as the symptoms — “I was lucky to have the support of my family and my husband, but I felt isolated and lonely” — and what shifted when she found a community: “Being part of the group coaching sessions was transformative. We celebrated each other’s wins, and I felt a genuine connection to everyone.”
On the Program itself she is specific: “The program is easy to follow and helped me understand the brain in a way that made sense. The tools they offer are practical and can be used anywhere.”
This story reflects one person’s experience. Results vary, and a testimonial cannot establish that re-origin treats a health condition or predict another person’s outcome.
Cherrie is describing her own experience of using re-origin’s education, practices, coaching and community during her own journey. It is not clinical evidence, not a typical outcome, and not a prediction of what will happen for anyone else.
What may contribute to Long COVID
No single mechanism explains every case. Long COVID is heterogeneous, and different processes may be more relevant for different people — which is one reason the same label covers such different experiences.16
The areas below are under active investigation. Some are better established than others, and nobody has all of them.
Immune and inflammatory
A dysregulated inflammatory state, and immune changes that persist after the acute infection has passed.1
Viral persistence
Ongoing viral activity associated with a reservoir of virus or viral material within the body. Proposed and under study.17
Reactivation of other viruses
Reactivation of latent viruses such as Epstein–Barr virus has been reported in some people. Emerging.7
Autoimmunity
Immune responses directed at the body's own tissues, and inadequate antibody responses to the original infection.1
Autonomic dysfunction
Disruption to the automatic control of heart rate, blood pressure and other functions, including presentations such as POTS.7
Vascular and clotting changes
Microvascular dysfunction, endothelial changes and clotting abnormalities. Actively researched, not established for everyone.16
Organ or tissue injury
Damage resulting from the acute phase of the infection, which can affect the lungs, heart, kidneys or other organs.1
Some groups appear more likely to develop Long COVID, including women, people who were hospitalised or critically ill with COVID-19, people with underlying health conditions, and people who were unvaccinated at the time of infection. Research also shows COVID-19 vaccination helps reduce the risk.1
How Long COVID is assessed
Long COVID is generally a clinical diagnosis. A clinician builds a picture from your history and examination, and orders investigations where the symptom pattern points somewhere specific — rather than running a single confirmatory test, because none exists.2
Definitions differ slightly. The current US working definition describes Long COVID as present for at least three months after infection. The WHO case definition describes symptoms that usually begin within three months of the illness and last at least two months. In practice both point the same way — and symptoms appearing earlier still deserve assessment and monitoring.145
No confirmatory test
No laboratory test can currently confirm or rule out Long COVID, or separate it from conditions with different causes.2
Normal results are not a verdict
Objective laboratory or imaging findings should not be the only measure of how a person is doing. Normal tests do not mean symptoms are unreal.2
A positive test is not required
Laboratory confirmation of the original infection is not required for a diagnosis, though a viral or antibody test can help assess for current or previous infection.2
Onset varies too. Symptoms may persist from the acute illness, appear after a period of apparent recovery, follow an infection that was mild or asymptomatic, or worsen conditions that were already present. Clinicians may also investigate other conditions or complications suggested by the symptom pattern.25
Professional care
Management and professional support
There is no single treatment for Long COVID. For most people the goal of medical management is to optimise function and quality of life through established symptom-management approaches, tailored to the individual.2
That is meaningful care, not a consolation prize. Better sleep, less pain, steadier blood pressure on standing, easier breathing or a workable week is real improvement in a life.
What care may include
- Treating identified medical conditions or complications
- Focusing on the symptoms you find most burdensome
- Symptom-specific medication where appropriate
- Pacing and energy conservation
- An individualised rehabilitation plan — respiratory, occupational, cognitive or other
- Support for sleep, pain, autonomic symptoms and mental health
- Workplace or educational adjustments
- Multidisciplinary care where it is available
Things that help the process
Symptom diaries and calendars can make fluctuating patterns visible over time and give a clinician something concrete to work with.2
Because there is no confirmatory test, shared decision-making and achievable goals matter. Care that focuses on specific symptoms and conditions tends to be more useful than waiting for a single answer.2
Practical guidance on daily life with Long COVID — work, energy, appointments and support — is available from public-health sources.9
Do not start, stop, reduce or change any medication or treatment based on this page. Those decisions belong with your prescribing clinician.
Activity and energy
Post-exertional malaise and activity
Post-exertional malaise (PEM), also called post-exertional symptom exacerbation, is commonly associated with Long COVID. It is a worsening of symptoms after exertion that may have been minor — physical, cognitive, emotional or sensory.2
The delay is what makes it so difficult to spot. Symptoms typically worsen 12 to 48 hours after the activity and can last days or even weeks, so the crash rarely looks connected to what caused it.2
Pacing and energy conservation — the approaches used in ME/CFS care — can help reduce how often symptoms flare. People with Long COVID who experience PEM may benefit from these same strategies.28
This is also why fixed, steadily increasing exercise programs are not suitable for everyone. Activity and rehabilitation plans should be individualised, and concerns such as exertional oxygen desaturation or cardiac symptoms may need assessment before any exercise training begins.26
Where re-origin is careful
re-origin does not tell anyone to push through, exercise their way out of Long COVID, or use how calm they feel as a guide to how much they can safely do.
Neuroplasticity-informed practice does not restore stamina and does not prevent PEM. Decisions about activity levels belong with you and your clinical team.
What the Program can help with is the surrounding experience: the fear that follows a crash, the loss of confidence, and the stress response that a bad week leaves behind.
Fatigue, brain fog and dysautonomia
Three symptom areas come up more than any others, and each has its own management approach.
Persistent fatigue
Fatigue that limits daily activity and is not resolved by rest. Where PEM is also present, pacing takes priority over building up activity.2
Some people are diagnosed with ME/CFS after COVID-19; the two conditions overlap but are not the same.7
Brain fog
Difficulty concentrating, holding information or finding words. Cognitive effort counts as exertion, so it can trigger PEM in the same way physical activity does.23
Cognitive rehabilitation may be offered where appropriate.
Orthostatic intolerance and dysautonomia
Dizziness, palpitations or a racing heart on standing. POTS is one recognised presentation following COVID-19 and has specific management.7
Worth raising specifically, as it is often assessable and treatable.
Sleep difficulty is common alongside all three. Our insomnia page covers persistent sleep problems and evidence-based sleep care in detail. Dedicated re-origin pages on chronic fatigue, brain fog, PEM and dysautonomia are in the editorial queue and will be linked here once reviewed.
Neuroplasticity and learning
Where neuroplasticity may fit
Neuroplasticity is the nervous system’s capacity to change through experience and learning. It is a general property of how nervous systems work, and it is why repeated experience shapes responses over time.10
Prolonged illness generates a great deal of repeated experience: months of monitoring symptoms, bracing for the next crash, adjusting what you attempt. Neuroplasticity-informed approaches may help some people work with stress responses, attention, symptom-related fear, avoidance, confidence, coping, daily habits and how they respond to sensations.
That is the honest scope of the idea, and it is genuinely worth having. Long COVID is not a learned illness, symptoms cannot simply be unlearned, and no amount of nervous-system work acts on viral persistence, autoimmunity, organ injury or vascular changes. A calmer nervous system is not a guarantee of anything — but the difference between facing a difficult month with tools and facing it without them is real.
More support and related resources
More support and related resources
Living With Long COVID (CDC)
Daily life · external
Public-health guidance on managing daily life, work, energy and appointments while living with Long COVID.
Read the CDC Guidance →
The re-origin Program
Education, structured brain-body practices, somatic tools, coaching and community — and how it all fits together week to week.
Explore the re-origin Program →
Science and Results
The research re-origin draws on, what it does and does not show, and how we describe outcomes.
See the Science and Results →
What Is Neuroplasticity?
How the nervous system changes through learning and experience — and where that does and does not apply within health support.
Learn What Neuroplasticity Means →
The re-origin Community
A moderated space for people living with persistent and unpredictable symptoms, plus optional group and one-to-one coaching.
Explore the re-origin Community →
Insomnia: Symptoms, Causes and Treatment
Disrupted, unrefreshing sleep is common in Long COVID. This page covers persistent sleep difficulty and evidence-based sleep care.
Read About Insomnia →
Related Long COVID reading
Related Long COVID reading
Healing from Long COVID: Cherrie's Story of Recovery
Cherrie's full written account of six months of COVID-19 and the months that followed.
Post-Viral Fatigue: How Long It Lasts
Why fatigue can persist long after a viral infection, and how it relates to Long COVID.
COVID Joint Pain: Lingering Joint Pain After COVID
Joint and muscle pain that outlasts the infection, and what can help you live with it.
Questions
Frequently asked questions
What is Long COVID?
Long COVID is an infection-associated chronic condition that can occur after SARS-CoV-2 infection. It is present for at least three months as a continuous, relapsing and remitting, or progressive state, and it can affect one or more organ systems.1
It is also called long-haul COVID, post-COVID condition and post-acute sequelae of SARS-CoV-2 infection (PASC).
What are the most common Long COVID symptoms?
More than 200 symptoms have been described. Commonly reported ones include fatigue, symptoms that worsen after exertion, difficulty thinking or concentrating, breathlessness, palpitations, dizziness on standing, sleep problems, pain, digestive symptoms and changes in smell or taste.3
Symptom patterns vary widely between people and can change over time.
Can Long COVID follow a mild or unrecognised infection?
Yes. Long COVID can follow COVID-19 of any severity, including mild and asymptomatic infection, and it can develop after a period of apparent recovery or remission.25
A positive test result at the time of infection is not required for a diagnosis, although a viral or antibody test can help assess for previous infection.2
How is Long COVID diagnosed?
Long COVID is generally diagnosed clinically, based on history and physical examination, with directed investigations where the symptom pattern suggests them.2
Clinicians also consider other conditions that could explain the symptoms.
Is there a test for Long COVID?
What is post-exertional malaise?
Post-exertional malaise, also called post-exertional symptom exacerbation, is a worsening of symptoms after physical, cognitive, emotional or sensory exertion that may be minor.2
Symptoms typically worsen 12 to 48 hours after the activity and can last days or weeks, which makes the link to the trigger easy to miss.2
How is Long COVID managed?
For most people the aim is to optimise function and quality of life through symptom management: focusing on the most burdensome symptoms, treating identified conditions, building an individualised rehabilitation plan where appropriate, and tracking changes over time.2
Care is tailored to the person rather than following one protocol.
How long can Long COVID last?
Is Long COVID the same as ME/CFS?
No. They are separate conditions, although they overlap: some people are diagnosed with ME/CFS after COVID-19, and people with Long COVID may benefit from symptom-management approaches used in ME/CFS, particularly for post-exertional malaise.27
Long COVID is not simply another name for ME/CFS or post-viral fatigue syndrome.
Where may neuroplasticity-informed support fit?
Neuroplasticity describes the nervous system’s capacity to change through experience and learning.10 Neuroplasticity-informed education and brain-body practices may help some people work with stress responses, attention, symptom-related fear, avoidance, confidence and daily habits alongside medical care.
They are not a treatment for Long COVID and do not act on viral persistence, autoimmunity, organ injury or vascular changes.
You don't have to work this out alone
Living with unpredictable symptoms wears down confidence, routines, relationships and trust in your own body — usually long after the appointments have run out of things to try.
re-origin brings together science-informed education, brain-body practices, somatic tools, coaching and a community that already understands.
re-origin complements appropriate healthcare. It does not diagnose or medically treat Long COVID.
Medical disclaimer
The information on this page is provided for educational purposes only. It is not intended to diagnose, treat, cure or prevent any condition and does not replace assessment, diagnosis or treatment from qualified healthcare professionals. Do not start, stop or change medication or treatment based on this page. Seek appropriate medical advice for new, severe, worsening or unexplained symptoms.
References
- Centers for Disease Control and Prevention. Clinical Overview of Long COVID. Updated 9 March 2026. Read the CDC clinical overview View source
- Centers for Disease Control and Prevention. Long COVID Clinical Guidance. Updated 9 March 2026. Read the CDC clinical guidance View source
- Centers for Disease Control and Prevention. Clinical Symptoms of Long COVID. Updated 9 March 2026. Read the CDC symptoms guidance View source
- World Health Organization. Post COVID-19 condition (long COVID). Fact sheet, 26 February 2025. Read the WHO fact sheet View source
- Ely EW, Brown LM, Fineberg HV; National Academies of Sciences, Engineering, and Medicine Committee on Examining the Working Definition for Long COVID. Long COVID defined. New England Journal of Medicine. 2024. doi:10.1056/NEJMsb2408466. View the article View source
- Al-Aly Z, Davis H, McCorkell L, et al. Long COVID science, research and policy. Nature Medicine. 2024;30:2148–2164. doi:10.1038/s41591-024-03173-6. View the DOI record View source
- Davis HE, McCorkell L, Vogel JM, Topol EJ. Long COVID: major findings, mechanisms and recommendations. Nature Reviews Microbiology. 2023;21:133–146. doi:10.1038/s41579-022-00846-2. View the DOI record View source
- Centers for Disease Control and Prevention. Treatment and Management of ME/CFS — managing post-exertional malaise. Read the CDC ME/CFS management guidance View source
- Centers for Disease Control and Prevention. Living With Long COVID. Read the CDC living-with guidance View source
- Cramer SC, Sur M, Dobkin BH, et al. Harnessing neuroplasticity for clinical applications. Brain. 2011;134(6):1591–1609. doi:10.1093/brain/awr039. View the DOI record View source