Long COVID and post-viral pain

What is post-viral pain?

Post-viral pain is persistent pain that develops or continues after a viral infection and lasts longer than three months¹. It is one component of a broader pattern of post-viral symptoms that frequently includes fatigue, unrefreshing sleep, cognitive difficulties ("brain fog"), exercise intolerance, and autonomic symptoms such as a racing heart on standing. Pain may be diffuse and widespread, focal (in a joint, muscle group or nerve distribution), or both. Common patterns include muscle and joint pain, headaches, neuropathic-type pain (burning, tingling, shooting), and abdominal or chest pain.

By far the most common cause now is long COVID, also known as post-COVID-19 condition or post-acute sequelae of SARS-CoV-2 (PASC). The World Health Organization defines post-COVID-19 condition as symptoms that develop in someone with a probable or confirmed SARS-CoV-2 infection, usually three months from the onset of the acute illness, lasting at least two months, and not explained by another diagnosis². At least one in ten people who have had COVID-19 develop persistent symptoms, and more than 200 different symptoms have been described across multiple organ systems³. Pain, including widespread musculoskeletal pain, headache, chest pain and neuropathic-type pain, is among the most commonly reported persistent symptoms^3,4.

Post-viral syndromes are not new. The Dubbo Infection Outcomes Study, conducted in rural New South Wales, followed people from the time of acute infection with Epstein-Barr virus (glandular fever), Coxiella burnetii (Q fever) or Ross River virus, and found that roughly one in ten developed a post-infective fatigue syndrome lasting six months or longer, regardless of which infection triggered it⁵. Q fever in particular remains relevant in rural Australia, where exposure to livestock is a recognised risk. Long COVID sits within this longer-standing pattern of post-infectious illness, and shares substantial overlap with conditions such as myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and postural orthostatic tachycardia syndrome (POTS)^3,6.

The mechanisms behind post-viral pain are still being worked out, but current evidence points to a combination of factors that may include persistent viral reservoirs, immune dysregulation, autonomic nervous system disruption, changes in pain processing (nociplastic mechanisms), microvascular changes, and altered mitochondrial function^3,7. Importantly, post-viral pain is a real, biologically grounded condition, not a psychological one and not "all in your head", even though the symptoms often fluctuate, can be hard to demonstrate on standard tests, and may not show on imaging or routine blood work.

What current evidence says about post-viral pain care

The evidence base for post-viral pain care is genuinely still emerging. There are currently no proven curative treatments for long COVID or other post-viral syndromes, and Australian and international guidance is conservative and consensus-based rather than built on the kind of large randomised trial base that supports treatment of, for example, knee osteoarthritis^4,3. What this means in practice: care focuses on supporting recovery where it occurs, managing symptoms, protecting function, and avoiding harm, particularly avoiding interventions that can worsen symptoms in this population.

The single most important concept in post-viral pain management is pacing: staying within your current activity envelope to avoid triggering symptom worsening, and gradually expanding that envelope only as the body allows. For many people with post-viral pain, particularly those who also experience post-exertional malaise (PEM) (a delayed worsening of symptoms 24 to 72 hours after physical, cognitive or emotional exertion), pushing through to do more is counterproductive. It can trigger flares that take days or weeks to recover from, and may set back overall progress⁶.

This is a meaningful departure from the standard chronic pain advice to "exercise more and gradually do more". The UK National Institute for Health and Care Excellence formally changed its ME/CFS guideline in 2021, removing graded exercise therapy as a recommended treatment after evidence reviews concluded it could cause harm in patients with PEM⁶. The current consensus for people with PEM is pacing and energy envelope management, not progressive exercise. Many people with long COVID experience PEM, and the same caution applies. People with post-viral pain who do not have PEM may benefit from carefully graded activity under supervision, but this needs individual assessment, not an assumption^4,6.

Pharmacological treatment for post-viral pain is symptomatic and largely extrapolated from related conditions (such as neuropathic pain or fibromyalgia), as there are no medications licensed specifically for post-viral pain^4,3. Options that may be considered with your GP include simple analgesics, low-dose tricyclic antidepressants for neuropathic-type pain or sleep, and medications for related symptoms such as orthostatic intolerance (if POTS is present) or sleep disturbance. Opioids are not recommended for chronic post-viral pain. Many people benefit from referral to a multidisciplinary long COVID or chronic pain clinic where these decisions can be tailored.

Multidisciplinary care (GP, physiotherapist with relevant experience, psychologist, occupational therapist, and where indicated specialist medical input such as cardiology, neurology or rehabilitation medicine) is the model most consistently recommended for long COVID and complex post-viral presentations⁴. Several Australian states have dedicated long COVID clinics; access varies by region.

Validation matters. People with long COVID and other post-viral conditions are often dismissed, particularly when the initial infection was mild, when standard tests come back normal, or when symptoms fluctuate in ways that are hard for others to understand. This dismissal is itself harmful and contributes to delayed diagnosis and care³. If you have lived this, it is not in your head, and the evidence supports your experience.

How Pain Coach is built for post-viral pain

Pain Coach is a chronic pain tracking app designed to be used with your GP or physiotherapist. For post-viral pain, the daily check-in captures pain alongside the five lifestyle factors most relevant to recovery and symptom management (sleep, exercise, nutrition, stress and social connection) in under two minutes a day.

The most useful thing tracking can do for post-viral pain is support pacing. Pacing depends on knowing your current envelope (what level of activity you can do without triggering a delayed flare), and that envelope can be hard to identify from memory alone, particularly when symptoms fluctuate and PEM is delayed by days. A daily record of activity alongside pain, sleep quality, fatigue and other symptoms makes patterns visible that aren't visible in real time: which kinds of activity tend to trigger flares, how long the lag is, what the recovery looks like, and whether the envelope is gradually expanding or contracting over weeks and months⁶.

Pain Coach does not promise a cure. The realistic picture for post-viral pain is that some people recover gradually, some plateau with significant residual symptoms, and some develop a longer-term condition that requires ongoing management^3,5. Tracking is most useful for supporting whichever trajectory you are on: for spotting improvement that's easy to miss day-to-day, for catching patterns that help avoid setbacks, and for giving your clinician concrete information to inform treatment decisions. It is not a substitute for medical care.

The five lifestyle factors and post-viral pain

Each of the five factors Pain Coach tracks is relevant to post-viral pain, though several need particular care in this population.

• Exercise and movement. This is the factor that most needs careful framing for post-viral pain. If you experience post-exertional malaise (PEM), a delayed worsening of symptoms after activity, the current consensus is pacing within your envelope, not graded exercise⁶. This means doing less than you feel you could on a "good day", and avoiding the boom-and-bust cycle that tends to set people back. If you do not have PEM, carefully graded activity under supervision may be appropriate, but this should be individually assessed by a clinician experienced in post-viral conditions. Tracking activity alongside symptoms shows you and your physiotherapist where your envelope sits and how it changes.
• Sleep. Unrefreshing sleep (waking unrested even after enough hours) is one of the most common and disabling features of post-viral conditions^3,6. Sleep disruption and pain interact in both directions: pain worsens sleep, and poor sleep amplifies pain^8,9. Tracking sleep alongside daytime symptoms makes the relationship visible and gives your clinician useful information.
• Nutrition. Regular, balanced eating supports the energy and resilience needed for recovery and pacing, and inadequate nutrition can worsen fatigue¹⁰. There is no specific "long COVID diet" supported by good evidence, but the general principles of a varied, mostly plant-based diet with adequate protein and hydration apply. Pain Coach tracks plant intake, whole-food intake and added sugar so your clinician can see the pattern; it does not prescribe a specific diet.
• Stress. Chronic stress amplifies central pain processing and can worsen the autonomic symptoms that accompany many post-viral conditions¹¹. The fear and uncertainty that often accompany an unpredictable, fluctuating condition are entirely understandable, and psychological support (used as adjunctive care, not as a cure) has consistent evidence for reducing distress and improving function in chronic pain¹². This is about supporting you to live with the condition; it does not mean the condition is psychological.
• Social connection. Post-viral conditions can be deeply isolating, particularly when they limit work, social activities and relationships, and when others do not understand the condition³. Isolation and loneliness independently worsen chronic pain outcomes^13,14. Small, regular contact with people who understand (including, for many, online peer communities of others with long COVID or post-viral conditions) tends to correlate with better days.

Find a physiotherapist for post-viral pain in Australia

Pain Coach Connect lists verified Australian physiotherapists, with telehealth and in-person consultations available. For post-viral pain, look for a clinician with experience in long COVID, ME/CFS or post-viral fatigue who understands pacing and post-exertional malaise: not every musculoskeletal physiotherapist works with this population. The listings flag relevant experience where physiotherapists have indicated it. Many participating clinics accept Medicare Chronic Disease Management (CDM) plan referrals.

Several Australian states also have dedicated long COVID or post-viral clinics, usually accessed through GP referral. Availability varies; your GP can advise on what is available in your area.

• Sydney
• Melbourne
• Brisbane
• Adelaide
• All regions