Reading time: 6 minutes | Last updated: April 2026 | Written for exhausted parents short sections, plain words
Long COVID can affect children even after a mild infection. For some, the biggest change is fatigue. For others, it’s headaches, brain fog, dizziness or a sudden change in behaviour. School becomes harder, hobbies disappear and parents often find themselves searching for answers while being told everything looks normal.
You are not imagining it. Your child is not making it up. Long COVID in children is real, increasingly recognised and the subject of growing international research.
Jump to: What it looks like | By age group | POTS in children | PANS and PANDAS | School and daily life | What helps | Talking to your GP | For parents | FAQs
What Long Covid in Children Actually Looks Like
Long Covid in children does not always look the way you would expect after an illness. It is not always obvious. And it is not always believed.
Recent paediatric reviews confirm that Long Covid in children and adolescents is a complex multisystem condition that can occur even after mild or asymptomatic initial infection, with symptoms that persist, fluctuate, or relapse over time.
The most common symptoms in children include:
Fatigue — not normal tiredness. The kind where getting dressed is genuinely too much. Where a previously energetic child spends most of the day horizontal. Where pushing through produces a crash that lasts days.
Headaches — often daily, different in character from headaches before Covid, worsened by screen time and cognitive effort.
Brain fog — difficulty concentrating, memory problems, slow processing. A previously sharp child who suddenly cannot follow a lesson, loses track of conversations, or seems to be “somewhere else.” Teachers sometimes notice this before parents do.
Pain — joint pain, muscle pain, chest pain, and abdominal pain. Often multiple sites simultaneously. Frequently dismissed as growing pains or anxiety.
Sleep disruption — difficulty falling asleep, non-restorative sleep, or sleeping far more than normal without feeling rested.
Dizziness and heart racing — particularly on standing up, which may point toward POTS (see below).
Mood and behavioural changes — anxiety, irritability, emotional dysregulation, depression, and in some cases dramatic personality changes that feel completely out of character. These are neurological and immune-driven changes, not psychological weakness.
Stomach problems — nausea, abdominal pain, food intolerances, and altered bowel habits that developed after the infection.
International research is now catching up with what many parents have been seeing for years. Work led by Danilo Buonsenso in Italy has been among the first to document Long Covid in children in a systematic way, including follow-up of paediatric patients after infection and the identification of symptoms such as fatigue, brain fog, and autonomic dysfunction. His team’s work has been particularly important in highlighting that children can experience persistent symptoms even after mild initial illness and that these symptoms are measurable, not anecdotal.
How Symptoms Differ by Age
Long Covid does not look the same across all ages. A 2025 JAMA Pediatrics study identified distinct symptom patterns by age group and the differences matter for recognition.
Infants and toddlers (0 to 2) — poor appetite, trouble sleeping, wet or dry cough, and stuffy nose that persists beyond what a normal cold would produce. Very young children cannot tell you how they feel, which means Long Covid in this group is almost certainly underdiagnosed. Watch for unusual irritability, changes in feeding, and sleep patterns that do not resolve.
Preschool children (3 to 5) — daytime tiredness and low energy are the most predictive symptoms in this age group. Children who were previously active and engaged becoming persistently flat, reluctant to play, or sleeping far more than usual. Dry cough persisting beyond the acute infection.
School age children (5 to 11) — trouble with memory or focusing, back or neck pain, stomach pain, and headaches are the most characteristic cluster. This is the age group most affected in terms of school attendance and academic performance. The cognitive symptoms are often what brings this group to medical attention via teachers noticing a sudden change in performance or behaviour.
Adolescents (12 to 18) — more similar to adult Long Covid in presentation. Fatigue, PEM, brain fog, POTS, and loss of smell or taste. This group is also more likely to develop anxiety and mood symptoms alongside the physical ones, and more likely to have those mood symptoms misattributed as the primary problem rather than a consequence of the physical illness. Adolescent girls appear to be at higher risk than adolescent boys, mirroring the adult sex difference.
POTS and Autonomic Dysfunction in Children
POTS — Postural Orthostatic Tachycardia Syndrome is one of the most significant and most frequently missed Long Covid complications in children and adolescents.
POTS means the heart rate surges abnormally when a child stands up because the autonomic nervous system cannot redistribute blood flow properly against gravity. In a child, this produces dizziness, lightheadedness, heart pounding, nausea, and sometimes fainting often within seconds of standing. It can make attending school, participating in activities, and simply moving through a day extremely difficult.
Research from VCU published in May 2025 suggested that Long Covid and POTS share overlapping autonomic dysfunction mechanisms in children and adolescents, and that patients with both conditions experience long delays in receiving appropriate diagnoses because their symptoms are hidden they look healthy to clinicians who are not specifically looking for postural heart rate changes.
What POTS looks like in children day to day: your child cannot stand in a queue without feeling faint. They feel significantly worse after standing in the shower than after lying in bed. They feel better lying down almost immediately. Their heart seems to pound after simple physical effort. They may look pale or feel cold and clammy after standing. They may describe the room spinning or their vision going grey when they get up too quickly.
How to check at home: measure heart rate lying down for five minutes, then again after two and ten minutes standing. A rise of 30 beats per minute or more in adolescents or 40 or more in younger children points toward POTS. Write the numbers down and bring them to your GP appointment.
Autonomic dysfunction in children also causes gut symptoms (nausea, bloating, constipation, pain after meals), temperature dysregulation, excessive sweating or inability to regulate heat, and bladder urgency all of which can look like entirely separate problems but are the same dysregulated system expressing itself in different places. → POTS and Dysautonomia guide
PANS, PANDAS, and Sudden Neuropsychiatric Changes
This is the section most parents of children with Long Covid need and cannot find. If your child had a sudden, dramatic personality or behaviour change after their Covid infection OCD symptoms, tics, rage, regression, eating restriction, or severe anxiety appearing seemingly overnight please read this carefully.
PANS stands for Paediatric Acute-onset Neuropsychiatric Syndrome. PANDAS is a subset Paediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections. Both describe conditions where a child suddenly develops neuropsychiatric symptoms OCD, tics, anxiety, emotional dysregulation, sensory sensitivities, sleep disruption, and sometimes psychosis following an infection that triggers an autoimmune attack on the brain.
SARS-CoV-2 can trigger PANS. Research has documented new PANS cases arising after Covid infection, with Covid-related PANS producing the same characteristic pattern: an abrupt, dramatic onset of symptoms that were not present before the infection, crossing multiple domains simultaneously (not just one symptom appearing but several at once), and often with a fluctuating course that improves and relapses.
What Covid-triggered PANS can look like:
OCD symptoms appearing suddenly — repetitive behaviours, intrusive thoughts, rituals around food, contamination fears, checking behaviours. Not gradual. Overnight.
Tics — repeated blinking, shoulder shrugging, neck movements, vocal tics. Motor abnormalities that were not present before. A marked deterioration in handwriting often slanting off to one side is a specific and well-documented PANS feature.
Emotional dysregulation — rage episodes that are completely out of character, emotional lability, sudden crying, extreme irritability, or a flatness and withdrawal that feels like your child has disappeared.
Sensory sensitivities — sudden intolerance of clothing textures, loud noises, bright light, being touched, or temperature changes. A child who was previously fine with all of these suddenly finding them overwhelming.
Eating restriction — not an eating disorder in the traditional sense, but a sudden refusal of previously liked foods, often fear-based rather than image-based.
Sleep disruption — nightmares, night terrors, fear of the dark developing suddenly, difficulty settling.
Urinary symptoms — bedwetting returning in a child who was previously dry, or frequency and urgency developing suddenly.
Why this matters so much: PANS is frequently misdiagnosed as anxiety disorder, ADHD, oppositional defiant disorder, or an eating disorder. Children are sent to CAMHS and treated for psychological conditions when the underlying cause is autoimmune neuroinflammation that needs a different approach. The key distinguishing feature is the sudden, dramatic onset PANS does not develop gradually. It arrives. If your child was fine before the infection and significantly changed after it, PANS deserves investigation.
What to do: document the timeline precisely when the infection was, when the symptoms appeared, which symptoms and in which order. Take this to your GP with a specific request for investigation of PANS. The PANS PANDAS UK charity has guidance for families and can help you navigate the referral pathway. Ask for a referral to paediatrics or CAMHS with the specific context that symptoms followed a Covid infection and appeared abruptly.
The mechanism: Covid triggers an autoimmune response that produces antibodies targeting brain tissue — the same molecular mimicry mechanism seen in adult Long Covid autoimmunity targeting autonomic receptors, but affecting the basal ganglia and other brain structures in children. EBV reactivation, documented in Long Covid, is also a known PANS trigger and may compound the picture in children who develop PANS after Covid. → Long Covid and the Immune System
School, Education, and Daily Life
Long Covid is one of the most common causes of significant school absence in children right now. And most schools are not equipped to understand it.
The cognitive symptoms brain fog, slow processing, difficulty concentrating directly impair learning. The fatigue and PEM mean that a full school day may be genuinely impossible and that a partial day may require several days of recovery. The postural symptoms mean that sitting in a classroom for hours is physically demanding in a way it is not for healthy classmates. And the fluctuating, invisible nature of the condition means that a child who managed three days last week may not manage any this week which looks to an uninformed school like inconsistency or avoidance.
What parents can do for school:
Request a meeting with the SENCO (Special Educational Needs Coordinator) specifically about Long Covid. This is the right starting point for accessing adjustments, not just the form tutor or class teacher.
Ask for a phased or part-time timetable during recovery starting with the most important lessons and the best time of day for your child, with rest built in.
Request written information to be provided for missed lessons rather than expecting the child to catch up in real time during a period of cognitive impairment.
Ask for a quiet space to rest during the day. This is a reasonable adjustment, not a special favour.
Consider whether a medical needs education plan or an EHCP (Education, Health and Care Plan) assessment is appropriate if the condition is significantly affecting learning long term.
Bring a GP letter confirming Long Covid and specifying the functional impact fatigue, cognitive impairment, post-exertional worsening in functional terms. Schools respond better to specific functional descriptions than to diagnostic labels alone.
What your child may need you to know: children with Long Covid often feel guilty, ashamed, and frightened that they are failing at school, at friendships, at the things they used to be good at. They may not be able to articulate how they feel. They may push through at school and collapse at home giving the school the impression they are managing better than they are. Believing them, validating their experience, and communicating that getting better matters more than keeping up are the most important things you can offer alongside the practical adjustments.
What Actually Helps
Pacing — adapted for children
The same principles that apply to adult Long Covid apply in children, but the application needs to be age-appropriate. For younger children, it is about keeping activities shorter, building in rest between them, and not scheduling too many things in one day. For adolescents, it is about understanding their own energy threshold and stopping before they hit it which is much harder when peers are doing more and social comparison is already difficult.
Activity diaries work well for older children and adolescents tracking what they did and how they felt 24 to 48 hours later helps identify the threshold and spot patterns that are invisible in the moment.
Electrolytes for POTS symptoms
Increased fluid and sodium intake is standard first-line management for POTS in children. The same approach as in adults electrolyte drinks, increased salt, adequate fluid applies, with quantities appropriate to the child’s size. Discuss targets with your GP or paediatrician. → Electrolyte Drink Guide
Sleep protection
Consistent sleep and wake times, screens off well before bed, and a cool dark room are the foundations. For children with POTS, elevating the head of the bed slightly can reduce morning symptom severity. If sleep is significantly disrupted despite good habits, raise this specifically with your GP as a separate concern to investigate.
Gentle movement within tolerance
Swimming and lying-down cycling are generally better tolerated than upright activities for children with POTS. For children with PEM, any movement needs to be genuinely symptom-led and well within threshold stopping before tired, not after. The instinct to encourage a child to stay active is understandable but can cause real harm if PEM is not recognised and respected.
For PANS specifically
PANS treatment typically involves addressing the underlying immune trigger (which may include antibiotics if strep is identified, or anti-inflammatory approaches), alongside behavioural and therapeutic support for the OCD and anxiety symptoms. The PANS PANDAS UK charity is the best starting resource for UK families. Treatment is specialist-led and requires paediatric input.
Talking to Your GP: What to Say and What to Ask For
Be specific and bring documentation. The more precisely you can describe what has changed — not “she seems tired” but “she was playing sport four times a week before the infection and has not been able to go to school for six weeks” the more useful the appointment will be.
Bring a written timeline: when the infection was, when each symptom appeared, what has changed since. Bring the lying and standing heart rate results if you have done them. Bring school letters if attendance has been affected.
Ask specifically for: referral to a paediatrician with Long Covid experience, a lying and standing heart rate assessment for POTS if postural symptoms are present, and investigations to rule out coexisting causes (thyroid, ferritin, full blood count, vitamin D).
If neuropsychiatric symptoms are prominent sudden OCD, tics, rage, sensory changes ask specifically about PANS and request a referral to paediatrics or a PANS-aware clinician rather than a generic CAMHS referral without this context.
If you feel dismissed, bring something written a printout of this article, the Long Covid Kids website, or the AAP Long Covid guidance. You are allowed to advocate for your child. You are allowed to go back. You are allowed to ask for a second opinion.
For Parents: The Part Nobody Talks About
Caring for a child with Long Covid is exhausting in a way that is hard to describe to people who have not lived it.
You are navigating a poorly understood condition through a healthcare system that frequently does not recognise it. You are advocating for your child at school while managing their distress at home. You are watching them miss the things childhood is supposed to contain the friendships, the activities, the ordinary days — and feeling the grief of that alongside them. You may also be dealing with your own health, your work, your other children, and everything else that does not pause because your child is ill.
The emotional weight of this is real and it deserves acknowledgement. You are doing an enormous amount. The fact that it is invisible to most people around you does not make it less real or less demanding.
Connect with other parents of children with Long Covid. The Long Covid Kids community and Long Covid Families are spaces where people understand this experience from the inside. They are also extraordinary repositories of practical knowledge what to say to schools, what to ask GPs, what has helped other children that no clinical resource currently provides.
And take care of yourself where you can. A burnt-out parent cannot advocate effectively for their child. Your wellbeing is not a luxury. It is part of your child’s care.
Quick Answers
Can children get Long Covid after a mild infection?
Yes. The majority of paediatric Long Covid cases follow mild or even asymptomatic initial infection. Severity of the acute illness does not reliably predict whether Long Covid will develop. This is why dismissing a child’s ongoing symptoms because “they were not very ill” is both common and incorrect.
How common is Long Covid in children?
Estimates vary significantly between studies depending on definition and measurement method. The RECOVER initiative analysis of over six million electronic health records found between 4 and 26% of children who had Covid developed Long Covid. The range reflects different definitions and observation periods rather than uncertainty about whether the condition exists.
Is my child’s personality change related to Long Covid?
It may be. Sudden, dramatic personality or behaviour changes following Covid infection — particularly OCD symptoms, tics, rage, emotional dysregulation, or severe anxiety appearing overnight may indicate PANS, a neuropsychiatric condition triggered by the autoimmune response to infection. Document the timeline precisely and ask specifically about PANS when you see your GP. This requires investigation rather than reassurance.
Will my child recover from Long Covid?
Most children show gradual improvement over months, though a significant subset remains symptomatic for more than a year with substantial disability. Recovery is non-linear and influenced by whether reinfection occurs, whether POTS or PANS is identified and treated, and how well pacing is managed. Early recognition and appropriate management improve outcomes. Reinfection risks resetting or worsening the trajectory, which is why infection prevention remains relevant for children already affected.
My child’s school thinks they are avoiding. What do I do?
Request a meeting with the SENCO and bring a GP letter describing the specific functional limitations fatigue, cognitive impairment, post-exertional worsening in plain terms. Ask for the school to distinguish between school-based anxiety and a medical condition with documented physical features. If the school has no awareness of Long Covid, the Long Covid Kids website has resources specifically designed for educational settings. You may also request a statutory assessment for an EHCP if the condition is significantly affecting education long term.
What is the difference between PANS and PANDAS?
PANDAS (Paediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections) is a specific subset of PANS where the trigger is confirmed streptococcal infection. PANS is the broader category the same clinical syndrome triggered by any infection, including SARS-CoV-2. Both involve sudden-onset neuropsychiatric symptoms driven by an autoimmune attack on the brain following infection. Covid-triggered PANS meets the PANS criteria even without strep involvement
Should I stop my child from doing activities to protect them?
Not completely, but activities need to be carefully calibrated to your child’s current capacity with PEM in mind. Complete rest can actually slow recovery and worsen some symptoms over time. The goal is symptom-led movement that stays within your child’s current threshold stopping before they feel tired rather than after. A paediatric physiotherapist or occupational therapist familiar with Long Covid or ME/CFS can help create an appropriate activity plan.
Where can I find other parents going through this?
Long Covid Kids (longcovidkids.org) is the leading UK parent organisation for children with Long Covid. Long Covid Families (longcovidfamilies.org) provides US-based resources. Both have active parent communities, school guidance packs, and clinician resources. The Long Covid community on Bluesky and X under the hashtag LongCovidKids connects parents internationally.
Can children with Long COVID still play sport?
It depends on their symptoms. If your child experiences post-exertional malaise (PEM), pushing through exercise can make them significantly worse. Instead of following a fixed training programme, activity should be guided by symptoms and kept within their current energy limits. Some children tolerate gentle swimming or short walks, while others need a longer period of recovery before returning to sport. A gradual, individualised approach supervised by a healthcare professional familiar with Long COVID is usually the safest option.
About Long COVID in Children Guide
This guide combines current paediatric research with the experiences shared by families living with Long COVID. It explains the condition in clear, practical language while recognising that symptoms, severity and recovery vary between children. As research continues to evolve, this article will be reviewed and updated regularly. It is intended for educational purposes and should not replace personalised advice from your GP, paediatrician or other healthcare professional.
Deeper reading: POTS and Dysautonomia · Post-Exertional Malaise · Long Covid and the Immune System · Brain Fog in Long Covid · Long Covid and Fatigue
Back to: Long Covid: The Real Invisible Challenge
Disclaimer: This guide is for educational and informational purposes only. It does not replace medical advice. Always consult your GP or a qualified healthcare professional about your child’s symptoms. If your child has sudden severe symptoms including signs of psychosis, seizures, or significant physical deterioration, seek urgent medical attention. Information reflects the best available evidence as of April 2026.