Post-Intensive Care Syndrome
Post-Intensive Care Syndrome: Symptoms, Recovery and Support
Post-Intensive Care Syndrome, or PICS, describes new or worsened physical, cognitive or mental-health difficulties that can occur during or after a critical illness and continue after someone leaves intensive care or hospital.1
Recovery after intensive care can involve much more than recovering from the original illness. People may experience weakness, reduced stamina, memory or concentration difficulties, sleep disruption, anxiety, low mood, distressing memories or difficulty returning to ordinary activities.
Medical follow-up and rehabilitation remain central. Alongside appropriate care, re-origin helps members work with stress responses, bodily monitoring, uncertainty, disrupted routines and rebuilding confidence in everyday life.
re-origin does not diagnose or medically treat PICS and does not replace post-ICU assessment, rehabilitation or mental-health care.
PICS at a glance
- What it is
- New or worsened physical, cognitive or mental-health impairments associated with critical illness and its wider recovery period.1
- Physical effects
- Weakness, fatigue, reduced stamina, pain, mobility limitations and difficulty with everyday activities.
- Cognitive effects
- Problems with attention, memory, processing information, planning or decision-making.
- Psychological effects
- Anxiety, depression, traumatic stress symptoms, nightmares, fear, disrupted sleep or reduced confidence.
- Assessment and rehabilitation
- Individualised medical follow-up, physical or occupational rehabilitation, cognitive assessment and mental-health support where indicated.2
- Where re-origin fits
- Complementary support for nervous-system regulation, stress responses, monitoring, routines, uncertainty and everyday confidence — not treatment for physical or cognitive injury.
Post-ICU Recovery Check-In
How is recovery affecting your everyday life?
This non-scored check-in is not a diagnostic test. It is designed to help you organise what has changed since critical illness or intensive care and identify areas you may want to discuss with your healthcare or rehabilitation team.
There are twelve prompts and no right answers. Nothing you select is saved or sent anywhere, and you can stop and come back to it at any point.
Since becoming critically ill or leaving intensive care…
I have less strength or stamina than I had before becoming critically ill.
Everyday activities such as washing, dressing, cooking, walking or climbing stairs are more difficult.
Fatigue limits how much I can do in a day.
I find it harder to concentrate, follow conversations or take in information.
I have difficulty remembering appointments, conversations or things I intended to do.
Planning, organising or making decisions feels more difficult.
I experience anxiety, low mood, irritability or a sense of being constantly on alert.
I have upsetting memories, nightmares, flashbacks or gaps in my memory of intensive care.
Sleep is disrupted or does not feel restorative.
I closely monitor physical sensations or worry that another medical emergency is beginning.
I am finding it difficult to return to work, relationships, social activities or previous responsibilities.
The experience has placed strain on a family member or caregiver.
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This self-assessment may help you organise and reflect on symptoms. It cannot diagnose a condition, determine the cause of symptoms or replace assessment by a qualified healthcare professional.
What people describe
Leaving intensive care is a milestone, not always the end of recovery
People describe recovery after critical illness in remarkably consistent ways. Not everyone experiences these things, and the mix differs from person to person — but if some of it sounds familiar, you are describing something well recognised.
The body feels different
- Weakness or muscle loss
- Limited stamina
- Breathlessness or pain related to the illness or its treatment
- Needing help with tasks that were previously automatic
- Frustration when physical recovery is slower than expected
Thinking takes more effort
- Losing the thread of a conversation
- Difficulty reading or concentrating
- Forgetfulness
- Struggling with decisions or planning
- Feeling overwhelmed by appointments or information
The experience can stay with you
- Nightmares or vivid memories
- Frightening memories that do not match what family members remember
- Anxiety about becoming critically ill again
- Low mood, irritability or emotional numbness
- Distress around hospitals, alarms, medical appointments or bodily sensations
Everyday life has changed
- Uncertainty about work or finances
- Changed family roles and reduced independence
- Feeling disconnected from the person you were before the illness
- Loneliness or feeling misunderstood
- Difficulty knowing what amount of activity is appropriate
Safety first
New or worsening symptoms need appropriate medical assessment
PICS should not be used to explain every symptom after intensive care. The original illness, organ recovery, medication effects and entirely separate diagnoses all still matter — so a new or clearly worsening symptom deserves assessment on its own terms.
Arrange prompt clinical assessment for new or significantly worsening
Breathlessness; chest pain or pressure; fainting; fever or signs of infection; marked swelling; severe or rapidly worsening weakness; new confusion; severe headache; changes in speech, facial movement or one-sided strength; medication reactions; inability to eat or drink adequately; or a significant decline in function.
Seek emergency care
Contact your local emergency service for severe breathing difficulty, persistent chest pain, collapse, signs of stroke, inability to wake or stay awake, immediate danger of self-harm, or another rapidly developing emergency.
This page cannot assess an individual situation, and calming or breathing practices are never a step to try before urgent help.
The re-origin approach
Support for the wider experience of recovery
Post-ICU assessment, medical follow-up and rehabilitation address the physical, cognitive and psychological effects of critical illness. Alongside that care, people may also need help with the patterns that develop around an uncertain recovery: closely monitoring the body, anticipating another emergency, feeling activated by appointments or memories, losing confidence in ordinary activities, or finding it difficult to settle into new routines.
re-origin brings together science-informed education, structured brain-body practices, somatic tools, optional coaching and community. Members may use these resources to work with stress responses, attention, uncertainty, protective habits and everyday confidence while continuing to follow medical and rehabilitation guidance.
This does not mean that nervous-system patterns caused PICS, muscle weakness, cognitive impairment, organ injury or PTSD. Those need their own assessment and care.
What members work on here
- Close monitoring of physical sensations
- Anticipatory fear around appointments, activity or setbacks
- Settling after a stressful medical experience
- Rebuilding daily routines and structure
- Confidence in ordinary activities alongside clinical guidance
- Living with the stress of an uncertain recovery
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.
Definition
What Post-Intensive Care Syndrome means
PICS stands for Post-Intensive Care Syndrome. The term was agreed at a stakeholders’ conference convened to improve long-term outcomes after critical illness, and it describes new or worsened impairments associated with critical illness and the ICU or hospital recovery period.1
It is a clinical concept rather than one single disease. Three domains are commonly recognised — physical, cognitive and mental health — and difficulties may begin in intensive care, become clear after discharge, or persist well beyond it. One person may experience one domain while another experiences several.12
PICS can follow many different critical illnesses, injuries or operations, and there is no single universal cause behind it. That also means not every difficulty after intensive care should automatically be labelled PICS: the original illness, organ damage, medication effects and other diagnoses still require consideration in their own right.
The label is useful because it gives a name to something that was, for a long time, poorly recognised after discharge. It is not useful if it becomes a reason to stop looking for a treatable explanation.
The physical, cognitive and psychological domains
These are the three areas clinicians look at. They overlap, and they do not carry equal weight for everyone.
Physical
Breathlessness, swallowing difficulties, voice changes and other symptoms may occur depending on the original illness and its treatment. They are individual, not universal features of PICS.
- ICU-acquired weakness
- Muscle loss and reduced mobility
- Fatigue and reduced exercise capacity
- Pain and impaired balance
- Difficulty with personal care or household activities
Cognitive
"Brain fog" is an informal description of how this feels, not a diagnosis. Persistent or functionally important difficulties are worth assessing properly.
- Reduced attention
- Memory difficulty
- Slower processing
- Difficulty with planning and organisation
- Problems with executive functioning and complex tasks
Mental health
Not all psychological distress after intensive care is PTSD. A diagnosis needs individual assessment by an appropriately qualified professional.
- Anxiety and depression
- Post-traumatic stress symptoms and nightmares
- Distressing or fragmented memories of intensive care
- Sleep disruption
- Fear of recurrence, emotional numbness or irritability
Assessment
How post-ICU difficulties are assessed
There is no single blood test, scan or questionnaire that diagnoses every aspect of PICS. Assessment is a picture built from several directions, and it usually starts with what happened during the critical illness itself.2
Post-ICU clinics may coordinate several of these areas in one place, but availability and service models vary considerably, and many people are reviewed instead by their primary-care clinician with referrals as needed.
What may be reviewed
- The original critical illness and its complications
- Health and function before the ICU admission
- Current physical strength, mobility and endurance
- Ability to perform everyday activities
- Medication review and organ-specific symptoms
- Memory, attention and executive functioning
- Anxiety, depression, PTSD symptoms and sleep
- Pain, and nutrition or swallowing where relevant
- Social support, work, finances and caring responsibilities8
- The needs of family members or caregivers
Who may be involved
You do not need to arrange all of this yourself. Ask your clinician which parts of it are relevant for you and what a referral would involve.
- Primary-care clinician
- Critical-care or post-ICU team
- Rehabilitation physician
- Physiotherapist and occupational therapist
- Speech and language therapist
- Psychologist, psychiatrist or neuropsychologist
- Dietitian and pharmacist
- Social worker
Support options
Options for rehabilitation and wider support
No single service covers everything. Most people draw on a combination, and what is available differs by country, region and hospital.
Medical and post-ICU follow-up
Review of ongoing symptoms, medication, organ recovery, test results and referrals. A post-ICU or ICU-recovery clinic may offer multidisciplinary assessment where one is available.2
Physical and occupational rehabilitation
Individualised support with strength, mobility, endurance, daily activities, equipment and returning to meaningful tasks. Plans are matched to the individual's illness, physical condition and clinical guidance.6
Cognitive assessment and rehabilitation
Assessment and strategies for memory, attention, organisation and complex daily tasks, where these difficulties are persistent or functionally important.
Psychological support
Appropriately qualified support for anxiety, depression, traumatic stress, sleep difficulties, adjustment and distress after critical illness. Medication may be prescribed for a separately assessed condition; there is no single medication that treats PICS as a whole.
Family, social and practical support
Help with caring roles, benefits, finances, work, transport, appointments, family communication and caregiver wellbeing. Practical and social circumstances shape recovery as much as clinical ones.8
Complementary support through re-origin
re-origin provides science-informed education, structured brain-body practices, somatic tools, optional coaching and community. Members may use these resources to work with stress responses, monitoring, uncertainty, disrupted routines and confidence alongside appropriate medical and rehabilitation care.
re-origin does not provide medical rehabilitation or treat physical, cognitive or psychiatric impairments.
Contributors and risk
Why recovery can be so complex
Critical illness affects many systems at once, and recovery is shaped by the illness, the treatment, the person and their circumstances together. Systematic review evidence has identified a range of factors associated with post-ICU difficulties, while noting substantial variation between studies.3
These are possible contributors and risk factors, not a checklist of causes. The importance of each differs by person and by domain, and current risk models are not suitable for predicting your own outcome.
The illness and its treatment
- Severity and duration of the critical illness
- Organ dysfunction or injury
- Mechanical ventilation
- Sedation and other medication exposure
- Delirium during the admission
- Inflammation during critical illness
The recovery period
- Prolonged immobility
- Loss of muscle mass and strength
- Disrupted sleep
- Pain
- Frightening or confusing ICU experiences
The person and their circumstances
- Pre-existing physical or mental-health conditions
- Previous level of function
- Age and frailty
- Limited access to rehabilitation or support
- Financial, transport, work and social barriers8
Where the explanations stop
Inflammation during and after critical illness is an active area of investigation, but a single inflammatory mechanism for PICS has not been established.2
Nor is the limbic system accepted as a singular underlying cause. PICS cannot be reduced to one brain region, to an overactive amygdala, to a stress-hormone chain, or to trauma alone — and physical weakness, organ injury and cognitive impairment are not explained by nervous-system arousal.
PICS-F
Critical illness can affect the whole family
Relatives and caregivers can be significantly affected by a loved one’s critical illness. When those difficulties persist, they are described as Post-Intensive Care Syndrome–Family, or PICS-F.9
Not every family member will develop significant difficulties. Systematic review evidence describes a range of risk factors and considerable variation between studies, and quality of life is affected for some survivors and relatives alike.49
PICS-F does not mean the family caused, or is responsible for, the patient’s recovery. Family members may need support in their own right — and clear communication, accessible information and family-centred care matter throughout.
Anyone in immediate mental-health crisis needs appropriate local professional support, not a self-help resource.
What relatives and caregivers may experience
- Anxiety, depression or post-traumatic stress symptoms
- Sleep disruption
- Caregiver strain
- Grief and uncertainty
- Changed family roles
- Financial or employment pressure
- Difficulty understanding what happened in intensive care
The re-origin community is open to supporters as well as members
Timelines and evidence
Recovery does not follow one timetable
Improvement may occur over weeks, months or longer, and different domains may recover at different rates. Some people improve substantially; others have persistent impairments or need continuing support. Return to work or previous activities often takes longer than a hospital discharge summary might suggest.
Recovery depends partly on the original illness, complications, health before admission and access to rehabilitation. A temporary setback does not necessarily mean that no further progress is possible.
What the research currently suggests
- Prevalence estimates vary considerably, because studies use different populations, definitions, tools and follow-up periods.2
- No single intervention addresses every PICS domain.2
- Multidisciplinary recovery services are increasingly used, but availability and evidence vary.7
- Exercise-based rehabilitation after critical illness has been examined in systematic reviews, with effects reported for selected physical outcomes.6
- Digital and eHealth interventions appear feasible, but effectiveness evidence remains preliminary.5
- Psychological interventions and ICU diaries have shown mixed findings, depending on the outcome and the study.2
- Research continues into how to identify who needs support and how services should be delivered.7
What no one can promise you
Headline statistics about how many ICU survivors develop PICS are common online. They are only meaningful with their population, definition and timeframe attached, which is why this page does not lead with one.
- Complete or permanent recovery
- A guaranteed return to your previous quality of life
- Recovery through positive belief
- Predictable improvement through repetition
Neuroplasticity and learning
Where nervous-system support may fit during recovery
Neuroplasticity is the nervous system’s capacity to change through experience and learning. A critical illness and a frightening hospital stay may affect attention, expectations, confidence, emotional responses and behavioural routines — and those are things practice can work with.
The general existence of neuroplasticity does not establish that PICS is caused by faulty neural wiring, that the limbic system is the source of physical weakness or cognitive impairment, that inflammation can be consciously switched off, that a brain-training Program treats PTSD, depression or cognitive injury, that re-origin replaces rehabilitation, or that recovery is guaranteed.
Practical areas members work with
- Noticing activation without immediately assuming another emergency is happening
- Working with anticipatory fear around appointments or activity
- Responding more flexibly to bodily monitoring
- Settling after a stressful medical experience
And in everyday life
- Rebuilding routines and planning days with more flexibility
- Reconnecting with meaningful activities
- Rebuilding confidence alongside clinical guidance
- Managing the stress that comes with an uncertain recovery
Everyday life
Recovery also happens in ordinary life
Progress may be uneven, and different parts of life may return at different speeds. Appropriate rehabilitation, practical support and realistic planning can help people gradually rebuild participation in the activities that matter to them.
Personal care and the household
Washing, dressing, cooking and household tasks are often where progress is first noticed — and where equipment or occupational-therapy advice can make an immediate difference.
Work, study and finances
Returning may be gradual, part-time or delayed. Financial and employment pressure is a real part of recovery and worth raising with your team early.
Relationships and changed roles
Family roles often shift during critical illness. Naming what has changed is usually more useful than trying to return straight to how things were.
Appointments and medication
Lists, shared calendars and written summaries reduce the load when memory and concentration are affected — and help family members support without taking over.
Sleep and daily structure
Sleep is frequently disrupted after intensive care. A predictable daily shape often helps, and persistent sleep problems deserve clinical review.
Confidence, identity and independence
Leaving the house, moving with confidence, and balancing independence against appropriate help are all part of recovery, alongside feeling like yourself again.
Member experience
Member experiences
Read individual accounts from re-origin members describing what they noticed, what they found useful and how they applied the Program in everyday life.
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.
Related resources
The re-origin Program
Structured education, brain-body practices, somatic tools, coaching and community in one Program.
Science and Results
See the research re-origin draws on and what it reports about member outcomes.
What Is Neuroplasticity?
Learn how the nervous system changes through learning and experience, and where that idea does and does not apply.
Meet the Coaches
See who provides optional coaching, what they do, and the qualifications each coach holds.
The re-origin Community
A moderated space for members and the people supporting them.
Conditions A–Z
Browse the full library of re-origin condition and symptom pages.
Questions
Frequently asked questions
What is Post-Intensive Care Syndrome?
Post-Intensive Care Syndrome, or PICS, is a clinical concept describing new or worsened physical, cognitive or mental-health difficulties that arise during or after critical illness and continue after someone leaves intensive care or hospital.1
It is not one single disease with one universal cause, and it can follow many different critical illnesses, injuries or operations.
What symptoms can PICS involve?
Difficulties are grouped into three recognised domains. Physical: weakness, muscle loss, fatigue, reduced exercise capacity, pain, impaired balance and difficulty with everyday activities. Cognitive: reduced attention, memory difficulty, slower processing, and problems with planning and organisation. Mental health: anxiety, depression, post-traumatic stress symptoms, nightmares, distressing memories, sleep disruption and reduced confidence.
One person may experience one domain while another experiences several.
How soon can PICS difficulties become noticeable?
Difficulties may begin during intensive care, become obvious in the days and weeks after discharge, or only become clear once someone tries to return to work, driving, caring responsibilities or social life. There is no fixed point at which they appear.
How long does recovery after intensive care take?
There is no single timetable. Improvement may occur over weeks, months or longer, and different domains may recover at different rates. Some people improve substantially; others have persistent impairments or need continuing support.
Recovery depends partly on the original illness, complications, health before admission and access to rehabilitation.
How is PICS assessed?
There is no single blood test, scan or questionnaire that diagnoses every aspect of PICS. Assessment usually looks at the original critical illness and complications, function before admission, current strength and mobility, everyday activities, medication, organ-specific symptoms, memory and attention, mood, traumatic stress and sleep, pain, nutrition, social and financial circumstances, and the needs of family members.2
What is an ICU-recovery or post-ICU clinic?
It is a follow-up service, usually multidisciplinary, that reviews recovery after critical illness and coordinates referrals for physical, cognitive and psychological needs. Availability and service models vary considerably between regions and hospitals, and not everyone has access to one.7
Is PICS the same as PTSD?
No. Post-traumatic stress symptoms are one thing some people experience within the mental-health domain of PICS, but PICS also covers physical and cognitive difficulties.
Not all psychological distress after intensive care is PTSD, and a diagnosis requires individual assessment by an appropriately qualified professional.
Is PICS the same as Long COVID?
PICS and Long COVID are different concepts, although a person who required intensive care for COVID-19 may experience overlapping features or meet criteria relevant to both.
Persistent symptoms require individual assessment rather than automatic relabelling.
What is PICS-Family?
Post-Intensive Care Syndrome–Family, or PICS-F, describes difficulties that relatives and caregivers may experience after a loved one’s critical illness — including anxiety, low mood, post-traumatic stress symptoms, sleep disruption, caregiver strain and grief.9
Not every family member develops significant difficulties, and PICS-F does not mean the family caused or is responsible for the patient’s recovery.
Where may re-origin complement post-ICU recovery?
re-origin provides science-informed education, structured brain-body practices, somatic tools, optional coaching and community. Members may use these resources to work with stress responses, bodily monitoring, uncertainty, disrupted routines and everyday confidence alongside appropriate medical and rehabilitation care.
re-origin does not diagnose or treat PICS and does not replace physical, cognitive, psychological or medical rehabilitation.
Support for the wider recovery experience
Medical follow-up and rehabilitation remain central after critical illness. But recovery may also affect attention, confidence, routines, relationships and how safe ordinary physical sensations feel.
re-origin brings together science-informed education, structured brain-body practices, somatic tools, optional coaching and community for members who want support with these wider patterns alongside appropriate healthcare.
re-origin does not diagnose or treat PICS and does not replace physical, cognitive, psychological or medical rehabilitation.
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
- Needham DM, Davidson JE, Cohen H, et al. Improving long-term outcomes after discharge from intensive care unit: report from a stakeholders' conference. Critical Care Medicine. 2012;40(2):502–509. doi:10.1097/CCM.0b013e318232da75. View the DOI record View source
- Inoue S, Nakanishi N, Amaya F, et al. Post-intensive care syndrome: recent advances and future directions. Acute Medicine & Surgery. 2024;11(1):e929. doi:10.1002/ams2.929. View the DOI record View source
- Lee M, Kang J, Jeong YJ. Risk factors for post-intensive care syndrome: a systematic review and meta-analysis. Australian Critical Care. 2020;33(3):287–294. doi:10.1016/j.aucc.2019.10.004. View the DOI record View source
- Gravante F, Trotta F, Latina R, et al. Quality of life in ICU survivors and their relatives with post-intensive care syndrome: a systematic review. Nursing in Critical Care. 2024;29(4):807–823. doi:10.1111/nicc.13077. View the DOI record View source
- Lai VKW, et al. Effectiveness of eHealth interventions on post-intensive care syndrome outcomes: a systematic review. Critical Care. 2024;28:317. doi:10.1186/s13054-024-05089-6. View the DOI record View source
- Cazeta BBR, et al. Effects of exercise interventions on physical function and quality of life after critical illness: a systematic review and meta-analysis. Clinical Rehabilitation. 2024;38(8):1053–1069. doi:10.1177/02692155241241665. View the DOI record View source
- Stewart J, et al. Factors to consider when designing post-hospital interventions to support recovery from critical illness. Journal of the Intensive Care Society. 2025;26(1). doi:10.1177/17511437241308674. View the DOI record View source
- Fresenko LE, et al. Rehabilitation and social determinants of health in the critical illness recovery literature. Critical Care Explorations. 2024;6(11):e1184. doi:10.1097/CCE.0000000000001184. View the DOI record View source
- Ito Y, Tsubaki M, Kobayashi M, et al. Risk factors for post-intensive care syndrome-family: a systematic review and meta-analysis. Heart & Lung. 2023;59:1–7. doi:10.1016/j.hrtlng.2023.01.005. View the DOI record View source