Long COVID
Long COVID, or post COVID-19 condition, describes symptoms that persist or appear months after the original infection and cannot be explained by another diagnosis. At Modern Physio we focus on understanding the root-cause of your problem & personalizing your treatment for lasting results.
Understanding Long COVID
Long COVID, or post COVID-19 condition, describes symptoms that persist or appear months after the original infection and cannot be explained by another diagnosis. The common patterns are fatigue, breathlessness, difficulty thinking clearly, palpitations, and a specific feature called post-exertional symptom exacerbation, where symptoms worsen disproportionately hours or days after activity and take a long time to settle. It is not rare in India: reviews of South Asian data place prevalence in a broad range from roughly nine to over thirty per cent depending on how it is defined, with breathlessness, persistent cough and exercise intolerance among the most reported symptoms. This page needs to say something uncomfortable about rehabilitation, because it is where the greatest harm has been done. Early in the pandemic, long COVID was often treated with graded exercise therapy, the approach of steadily increasing activity on a fixed schedule. That approach has since been withdrawn from guidance for the related condition ME/CFS after high rates of reported harm, and the World Health Organization's rehabilitation guidance states that graded exercise therapy should not be recommended for patients with post-exertional symptom exacerbation. The reason is that exercise intolerance in long COVID is not simple deconditioning, and cannot be resolved by pushing through it. Current physiotherapy consensus is to screen for post-exertional symptom exacerbation before any exercise-based programme, to reassess within one to two days of the first session, and to use a personalised pacing model that prioritises energy conservation over pre-set progressions. That is how we work at Modern Physio in Vaishali Nagar, Jaipur.
Common Symptoms
- Fatigue that is disproportionate to activity and not relieved by rest
- Post-exertional symptom exacerbation, where symptoms worsen hours or days after activity and take a long time to recover
- Breathlessness, including at rest or with light activity
- Difficulty thinking clearly, often described as brain fog, affecting memory, attention and word finding
- Palpitations, or a racing heart on standing
- Dizziness or light-headedness when standing up
- Disturbed sleep, and waking unrefreshed
- Muscle and joint aches
- A breathing pattern that feels effortful, shallow or high in the chest
- Reduced exercise tolerance that does not improve with training in the way ordinary deconditioning does
- Symptoms that fluctuate considerably from day to day
How Common Is It?
Reviews of post-COVID data from South Asia report standardised prevalence in a range from roughly nine to over twenty per cent, with wider definitions producing higher figures, and describe the region as at or above the upper end of global estimates using World Health Organization criteria. Breathlessness, persistent cough and exercise intolerance are among the most frequently reported symptoms, and the female to male gap is described as largest in India. Indian studies vary considerably depending on setting and definition, with hospital-based and urban studies reporting higher rates than community-based rural sampling. Given the scale of infection across India, even conservative estimates translate into very large absolute numbers, and this is likely to be substantially under-diagnosed rather than uncommon.
Causes & Risk Factors
- Persisting effects following COVID-19 infection, which may have been mild or severe
- Mechanisms still under investigation, including immune, vascular and autonomic contributions
- Autonomic dysfunction affecting heart rate and blood pressure regulation, which explains palpitations and dizziness on standing in some people
- Dysfunctional or altered breathing patterns developing after the acute illness
- Deconditioning from a period of illness and reduced activity, which can coexist with but does not explain post-exertional symptom exacerbation
- Higher reported prevalence in women than men in South Asian data
- Increasing age and pre-existing health conditions, which are associated with higher risk
Our Diagnosis Process
- Medical assessment first, since persistent breathlessness, chest pain, palpitations and fatigue after COVID-19 need other causes excluded by a doctor before rehabilitation begins
- Screening specifically for post-exertional symptom exacerbation using a structured tool, which determines whether an exercise-based programme is safe at all
- Assessment of breathing pattern, including whether breathing is shallow, upper-chest dominant or irregular
- Assessment of heart rate and blood pressure responses to changing position, where dizziness or palpitations on standing are reported
- A detailed activity and symptom history across a typical week, including the delayed effects of busier days
- Baseline functional measures chosen so they do not themselves provoke a crash
- Assessment of sleep, cognitive symptoms and mood, since these interact with fatigue
- Agreement on what a manageable level of activity looks like before anything is progressed
Our Treatment Approach
- Screening for post-exertional symptom exacerbation before any exercise is prescribed, since its presence changes the whole approach
- Pacing and energy management as the foundation, working within an energy envelope rather than pushing towards a target
- Reassessment within one to two days of the first session, because the effects of activity in this condition are frequently delayed
- Breathing retraining where a dysfunctional breathing pattern is present, which is lower risk than exertional programmes and often useful early
- Activity analysis across physical, cognitive and social demands, since all of them draw on the same limited energy
- Symptom and activity diaries to make the delayed relationship between exertion and crashes visible
- Position-change advice and management strategies where dizziness or palpitations on standing are present, alongside medical review
- Very gradual, symptom-led increases in activity only where post-exertional symptom exacerbation is absent or has settled, with flexible progression rather than a fixed schedule
- Education for family and employers, since the invisibility and fluctuation of this condition cause a great deal of misunderstanding
- Coordination with your doctor throughout, and prompt referral back if new or worsening symptoms appear
Key Highlights
Post-exertional symptom exacerbation screened for before any exercise is prescribed
Pacing and energy management rather than graded exercise therapy
Breathing retraining where the breathing pattern has changed after the illness
Reassessment within one to two days, because the effects of activity here are delayed
Recovery & Prevention Tips
- Learn what post-exertional symptom exacerbation feels like for you, since recognising it is what protects you from repeated crashes
- Judge activity by how you feel one to two days afterwards, not by how you feel during it
- Stop before you are tired rather than after, which is the opposite of ordinary training advice and is the right approach here
- Spread activity across the week instead of doing everything on a good day
- Count cognitive and emotional effort as energy expenditure too, not just physical activity
- Keep a simple diary of activity and symptoms, because the delay between the two makes the pattern impossible to see otherwise
- Practise the breathing work, which is low risk and often helps breathlessness that is not caused by exertion
- Be cautious of any programme that promises to build your fitness back up on a fixed schedule, since that approach has been withdrawn from guidance for related conditions
- Tell your doctor about new chest pain, worsening breathlessness or fainting rather than assuming it is part of long COVID
- Give yourself a realistic timeframe, since recovery in this condition is measured in months and is rarely linear
Products That Can Help
Supports and equipment we fit at the clinic that patients with this condition commonly use alongside treatment, never instead of it.
Related conditions
People reading this page often want one of these next. Each has its own guide to symptoms, causes and what physiotherapy can and cannot do.
Evidence & Sources
World Health Organization rehabilitation guidance for long COVID includes a definition of post-exertional symptom exacerbation and states that graded exercise therapy should not be recommended for patients with post-exertional symptom exacerbation, noting that exercise intolerance in long COVID is not physical deconditioning.
World Health Organization living guideline on long COVID rehabilitation, summarised by Long COVID PhysioA physiotherapy journal review of long COVID management states that comprehensive assessment including standardised screening for post-exertional malaise is critical before commencing any exercise-based rehabilitation, that reassessment should occur within one to two days of the first session, and that a personalised pacing-based model prioritising energy conservation may be better than pre-specified graded protocols.
Physiotherapy management of long COVID in adults (Journal of Physiotherapy)NICE guidance on managing the long-term effects of COVID-19 covers identification, assessment and multidisciplinary rehabilitation for people with ongoing symptoms four weeks or more after acute COVID-19.
NICE guideline NG188: COVID-19 rapid guideline, managing the long-term effects of COVID-19A systematic narrative review of post-COVID syndrome across Pakistan, India and Bangladesh reports standardised prevalence rates ranging from around nine to over twenty per cent, placing South Asia at or above the upper end of global estimates using World Health Organization criteria, with the largest gap between women and men observed in India.
Post-COVID syndrome in South Asia (Frontiers in Public Health)Frequently Asked Questions
Should I just push through and rebuild my fitness?
No, and this is the most important thing on this page. If you have post-exertional symptom exacerbation, meaning your symptoms worsen disproportionately in the hours or days after activity, then pushing through causes harm rather than progress. World Health Organization rehabilitation guidance states that graded exercise therapy should not be recommended for patients with post-exertional symptom exacerbation, and notes that exercise intolerance in long COVID is not simple deconditioning. This is genuinely different from recovering from an ordinary illness, and applying ordinary training logic makes many people worse.
What is post-exertional symptom exacerbation and how do I know if I have it?
It is a disproportionate worsening of symptoms after exertion, characteristically delayed by hours or even a day or two, and taking a long time to recover from. The delay is what makes it so hard to recognise, because the crash does not obviously connect to the activity that caused it. People often describe a good day followed by two or three bad ones. We screen for it using a structured questionnaire rather than guessing, because whether it is present completely changes what rehabilitation should look like. Keeping a simple activity and symptom diary is often what makes the pattern visible for the first time.
So what does physiotherapy actually offer if not exercise?
Several things, and they are genuinely useful. Pacing and energy management, which is a skill that can be taught, is the foundation and is what protects you from repeated crashes. Breathing retraining is valuable where the breathing pattern has changed after the illness, and it carries a much lower risk profile than exertional programmes. Activity analysis helps find where energy is going, including cognitive and social demands people do not count. Where post-exertional symptom exacerbation is absent, carefully symptom-led activity can be introduced. And practical education for family and employers matters, because this condition is invisible and fluctuating.
Is my breathlessness just anxiety or being unfit?
It is worth having that assumption challenged. Breathlessness after COVID-19 is commonly associated with an altered breathing pattern, meaning breathing that has become shallow, upper-chest dominant or irregular, which is a mechanical and learned problem rather than an anxiety diagnosis or a fitness problem. It responds to breathing retraining, which is one of the more reliable interventions we have here. Before we treat it as a breathing pattern issue, however, persistent breathlessness needs medical assessment to exclude other causes, and we would not begin without that having been done.
Why do I feel dizzy and get palpitations when I stand up?
That pattern suggests the autonomic system, which regulates heart rate and blood pressure automatically, is not adjusting normally to changes in position. It is well recognised after COVID-19. It matters for rehabilitation because it changes what is safe and comfortable: exercise may need to start in seated or lying positions, and standing up slowly, hydration and other practical measures often help. It also warrants medical assessment rather than being managed as a purely physiotherapy problem, so we would ask your doctor to review it alongside what we do.
How long will this take?
Longer than most people are told, and it rarely follows a straight line. Recovery is generally measured in months, and many people experience genuine improvement interspersed with setbacks, often triggered by overdoing things during a good period or by another infection. Setting expectations honestly matters here, because the repeated cycle of feeling better, doing too much and crashing is itself one of the main obstacles to recovery. We measure progress by the frequency and severity of crashes and by what you can sustain across a week, rather than by peak performance on a good day.
Is long COVID actually common in India?
Yes, though it is likely under-diagnosed. Reviews of South Asian data report prevalence in a range from roughly nine to over twenty per cent, with the region described as at or above the upper end of global estimates using World Health Organization criteria, and with breathlessness, persistent cough and exercise intolerance among the most common symptoms. Indian studies vary widely with setting and definition. Given the number of people infected, even the lower estimates represent very large absolute numbers. Many people do not connect their ongoing fatigue and breathlessness to an infection months earlier.
Can I go back to the gym?
Not on the usual terms, and not until we have screened you. If post-exertional symptom exacerbation is present, a standard gym programme with progressive overload is exactly the wrong approach and is likely to set you back. If it is absent, then carefully graded and symptom-led activity is reasonable, with reassessment within a day or two of starting rather than at the next weekly session. The distinction is not something to guess at. We would rather spend a session establishing which situation you are in than have you spend two months getting worse.
Medically Reviewed
This content was reviewed for medical accuracy by Dr. Surabhi Bansal, BPT, MPT (Ortho) with 14+ years of clinical experience.
At Modern Physio, all medical content undergoes a thorough review process to ensure accuracy and alignment with current physiotherapy standards. Our content is created to educate and should not replace professional medical advice. Learn more about our review process.
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