Marie Claire UK Marie Claire UK
  • Fashion Fashion
      • Fashion
        • View all Fashion
        • Fashion Trends
        • Shopping
        • Watches and Jewellery
        • Fashion News
  • Beauty Beauty
      • Beauty
        • View all Beauty
        • Fragrance
        • Hair
        • Make Up
        • Skincare
        • Nails
        • Marie Claire Beauty Awards
  • Health Health
      • Health
        • View all Health
        • Fitness
        • Nutrition
        • Female Health
        • Wellbeing
  • Life Life
      • Life
        • View all Life
        • Opinions
        • Travel
        • Sustainability
        • Weddings
        • Money & Work
        • Competitions
  • Culture Culture
      • Culture
        • View all Culture
        • TV and Film
        • Celebrity News
        • Books
        • Royal News
  • Vouchers Vouchers
      • Clothing
        • View all Vouchers
        • Mint Velvet
        • Karen Millen
        • H&M
        • nobody's child
        • ASOS
        • ARKET
        • MANGO
      • Designer Clothing
        • View all Vouchers
        • Reiss
        • THE OUTNET
        • SSENSE
        • Mytheresa
        • Liberty London
        • Selfridges
        • Farfetch
      • Accessories
        • View all Vouchers
        • AllSaints
        • Aspinal of London
        • Charles & Keith
        • River Island
        • FitFlop
        • Kate Spade
        • Vagabond
      • Jewellery
        • View all Vouchers
        • Pandora
        • Abbott Lyon
        • Goldsmiths
        • Beaverbrooks
        • Astrid & Miyu
        • Swarovski
        • Angara Jewellery
      • Beauty
        • View all Vouchers
        • Sephora
        • Cult Beauty
        • Space NK
        • Dyson
        • Clarins
        • Look Fantastic
        • Clinique
      • Activewear
        • View all Vouchers
        • Lululemon
        • Gymshark
        • Sweaty Betty
        • Nike
        • adidas
        • New Balance
        • Helly Hansen
  • NEWSLETTER Signup to our newsletter
  • logoCreated with Sketch.
    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!


    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    You are now subscribed

    Your newsletter sign-up was successful


    An account already exists for this email address, please log in.
    Trending
    • Women in Sport 2026
    • Marie Claire Masters
    • Spring Summer 2026
    • Nail Trends 2026
    • Best Investment Bags
    • Best Perfumes
    • Digital Issues
    • Women Who Win
    1. Health and Fitness

    "Chronic fatigue syndrome nearly ruined my life - 13 things I wish I'd known about the debilitating condition"

    One woman explains how to spot the signs in yourself, plus simple steps for overcoming them.

    Ally Head's avatar
    By Ally Head
    Published 19 May 2023 In Features

    When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

    Chronic fatigue syndrome symptoms: A woman lying exhausted on a bed
    (Image credit: Getty Images)
    • Facebook
    • X
    • Pinterest
    Share this article
    Join the conversation
    Follow us
    Add us as a preferred source on Google
    Subscribe to our newsletter

    Did you know that millions of people worldwide suffer from chronic fatigue syndrome symptoms? The answer is likely no, yet searches on the subject are rapidly rising, up 125% in the last year alone. 

    Heard of chronic fatigue syndrome but not sure exactly what it means? Lauren Windas was the same prior to developing the condition at university in 2012. While she was previously fit and healthy, following a viral infection, she become unable to get out of bed overnight and was left feeling completely exhausted by both mental and physical activity.

    The syndrome results in debilitating symptoms including prolonged exhaustion and problems with the nervous, immune, and digestive systems. 

    More on her story later, but now, eleven years on, she's recovered from chronic fatigue syndrome, writing a book - Chronic Fatigue Syndrome: Your Route to Recovery- to help others who may be struggling.

    There are a lot of you - as many as 24 million worldwide, according to epidemiologists at the Centers for Disease Control and Prevention. They also estimate that chronic fatigue syndrome affects 250,000 people in the UK and twice as many women as men - that said, problems with diagnosing the illness, as well as the surge in those suffering from long COVID (which shares some association with CFS) could mean that the number is a lot higher in reality.

    You may like
    • Woman meditating in the garden Exhaustion, Brain Fog, and Low Mood Aren't Always Burnout—Here's The Diagnosis Women Are Missing
    • Three women on the beach: Stretching, looking into the sun. Over 800,000 Women in the UK Have PMDD, Yet 90% Are Misdiagnosed—Here's What's Going Wrong
    • A woman scrolling on her phone, working on her laptop on the floor 7 Avoidable Everyday Habits That Could Be Draining Your Energy Without You Realising

    It's one of the most complex chronic illnesses of modern times, yet the condition is still widely misunderstood. Here, the expert breaks down what signs to look out for, how to know if you have the condition, plus coping mechanisms that have helped her reach a full recovery.

    Don't miss our guides to exhaustion symptoms and adrenal fatigue symptoms, while you're here. 

    Marie Claire Newsletter

    Celebrity news, beauty, fashion advice, and fascinating features, delivered straight to your inbox!

    By submitting your information you agree to the Terms & Conditions and Privacy Policy and are aged 16 or over.

    Chronic fatigue syndrome symptoms can be easy to miss - 13 red flags

    What is chronic fatigue syndrome?

    First things first: a bit more about what the condition actually is. "Chronic Fatigue Syndrome (CFS) is a complex chronic illness that profoundly affects the lives of those who experience it," shares Windas, who's since trained as a nutritionist and naturopath to help with her own recovery. 

    "It affects multiple body systems, including the nervous, neuroendocrine, immune and digestive systems, with evidence that there is a dysregulation between them, helping to explain the complexity of some symptoms," she continues. 

    A post shared by LAUREN WINDAS 🍊NUTRITIONIST (@laurenwindasnutritionist)

    A photo posted by on

    What are the chronic fatigue syndrome symptoms?

    While we all tend to feel tired and even exhausted from time to time, chronic fatigue syndrome tends to adopt a fluctuating relapsing and remitting pattern which can look different from one sufferer to the next, shares Windas.

    What to read next
    • A woman lying on the floor scrolling on her phone If You're Frazzled, Overworked and At Your Limit, These 5 Science-Backed Tips Can Help Avoid Burnout
    • A woman on the beach, in a bikini, eating some fruit I'm an Exercise Physiologist—If You’re Feeling Puffy, Tired, and Achy This Summer, These Everyday Habits Could Be Playing a Role
    • A woman meditating, practicing yoga and using sage in her home I Taught Women To Listen To Their Bodies. Now I Can't Stop Listening To Mine

    "While there is some variety in the symptoms themselves, too, the one that is broadly shared by the majority of chronic fatigue syndrome patients is called post-exertional malaise (PEM)," she goes on.

    Essentially, PEM describes your existing symptoms - think fatigue, extreme brain fog, or increased sensitivity - worsening after even minor physical or mental exertion, trapping you in an endless cycle. According to the Centre for Disease Control and Prevention, it describes your symptoms getting worse a day or so after exertion and lasting for as long as a month.

    Windas describes that chronic fatigue syndrome symptoms can seem endless, but the most common ones include:

    • Fatigue
    • Post-exertional malaise (PEM or ‘payback’)
    • Cognitive impairment, including brain fog, memory problems and lapses in concentration
    • Painful muscles and joints (myalgia)
    • Gastrointestinal symptoms, such as those common in IBS (indigestion, bloating, gas, diarrhoea or constipation)
    • Stress-related symptoms (anxiety symptoms, panic and difficulty tolerating stress) 
    • Food and alcohol intolerance
    • Increased sensitivity to chemicals, smells, temperatures, sounds or light
    • Heart palpitations
    • Vertigo or dizziness
    • Nausea
    • Orthostatic intolerance (where symptoms become worse upon standing)
    • Repeated flu-like symptoms (malaise, fever, recurrent sore throat).

    It's important to note, here, that you don't need to have all the above symptoms to have chronic fatigue syndrome - you may just struggle with a few. 

    Chronic Fatigue Syndrome: Your Route to Recovery - £14.30, Amazon

    Chronic Fatigue Syndrome: Your Route to Recovery - £14.30, Amazon


    View Deal

    What causes chronic fatigue syndrome?

    Sadly, at current doctors don't know what causes chronic fatigue syndrome. That said, one 2021 research paper suggested that chronic fatigue has a genetic component - the risk of having the condition was significantly higher in identical than in non-identical twins. "This indicates that disease risk may be increased due to genetic rather than environmental factors," explains Windas.

    Similarly, an early 2020 Norwegian genetic study discovered that two versions of genes (called alleles) were linked with chronic fatigue. "Scientists found that these alleles genes were more common in chronic fatigue patients than in healthy people – a finding that points towards problems with the immune system in chronic fatigue patients," Windas expands.

    Other factors, like infectious illnesses, traumatic events, and stressful life events are all believed to be triggers. "In my clinical experience, approximately 90 per cent of chronic fatigue syndrome patients report having had a recent infection," she shares. "I have also seen people who had glandular fever in childhood, then, years later, they experienced a significant traumatic and stressful event and then boom – chronic fatigue syndrome hit."

    "Chronic fatigue syndrome nearly ruined my life - but recovery is possible."

    Lauren first developed the debilitating condition while at university in 2012.

    She'd suffered from a standard viral infection yet quickly went from being active to not being able to get out of bed.

    Eleven years on, Windas has found changes to her diet, nutrition and lifestyle massively helped alleviate her symptoms. Not only that but she's retrained as a nutritionist and naturopath to help others in her clinic at ARDERE who are suffering from the same symptoms, bringing expertise from both a patient's and practitioner’s perspective. 

    "In April 2018, I was able to run the London Marathon in celebration of overcoming so many obstacles," she shares. "I hope that sharing my experience and knowledge can empower others to discover that recovery is possible." 

    "Being honest and pragmatic, any journey to recovery from chronic fatigue syndrome is a tricky one. There are days when you just feel like giving up – when you want to throw in the towel and stop trying because, well, what’s the point? That said, there are also days when you reach a huge milestone and you look back and think, Wow. I can’t believe I've come this far."

    Chronic fatigue syndrome symptoms: Lauren Windas, a CFS sufferer

    Lauren first found out she had chronic fatigue syndrome in 2012 - now, she helps others make a full recovery

    (Image credit: Lauren Windas)

    Her advice? If you think you may be struggling, do book a doctor's appointment or a session with an expert who is qualified to advise you on the symptoms and recovery programme for chronic fatigue. A whole host of lifestyle changes can help, from what you eat, to how you workout.

    "Recovery often seems like a wobbly rollercoaster ride of emotions and frequent setbacks. Work on practising acceptance. One of the greatest things you can do for yourself is to resist the resistance. Avoid fighting your symptoms, ride the waves and try to understand your triggers, so that you can move forwards."

    "My mission is to raise awareness about chronic fatigue syndrome and to break the stigma that is a chronic illness," she shares. "I want to guide others on their own recovery journeys, inspire hope and provide solutions. I have spent the last decade reclaiming my own mind and body from the crippling effects of chronic fatigue syndrome."

    How do doctors know if you have chronic fatigue syndrome?

    Good question - and, as with many conditions, there is no one test or scan that can conclusively confirm you have chronic fatigue as of yet.

    Instead, your doctor will likely listen to your symptoms and run tests to rule out other conditions. Do keep a journal of your symptoms, noting down days and times, to give them a clearer understanding of exactly the challenges you are facing. That way, they will be fully equipped and read up on what you've been experiencing and in turn, better able to advise you. 

    Ally Head
    Ally Head
    Social Links Navigation
    Senior Health and Sustainability Editor

    Ally is Marie Claire UK's Senior Health and Sustainability Editor, a well-regarded wellness expert, ten-time marathoner, and Boston Qualifying runner.

    Utilising her impressive skillset and exceptional quality of writing, she pens investigative, review and first-person pieces that consistently demonstrate flair and originality.

    Ally manages a team of freelancers, oversees all commissioning and strategy for her pillars, and spearheads the brand's annual Women in Sport covers, interviewing and shooting the likes of Mary Earps, Millie Bright, and Ilona Maher. Shortlisted for three BSMEs and winning one in 2022, Ally lives and breathes her verticals: her eye for a story and connections within the wellness sphere are unrivalled. Follow Ally on Instagram for more.

    Read more
    Woman meditating in the garden
    Female health Exhaustion, Brain Fog, and Low Mood Aren't Always Burnout—Here's The Diagnosis Women Are Missing
    Three women on the beach: Stretching, looking into the sun.
    Female health Over 800,000 Women in the UK Have PMDD, Yet 90% Are Misdiagnosed—Here's What's Going Wrong
     
     
    A woman scrolling on her phone, working on her laptop on the floor
    Female health 7 Avoidable Everyday Habits That Could Be Draining Your Energy Without You Realising
    A woman lying on the floor scrolling on her phone
    Female health If You're Frazzled, Overworked and At Your Limit, These 5 Science-Backed Tips Can Help Avoid Burnout
     
     
    Latest in Health and Fitness
    Health freelance writer Katie Sims trying a 20-minute wind down bedtime ritual
    Wellbeing I Swapped My Evening Scroll for a 20-Minute Wind-Down Ritual—Two Weeks Later, I Sleep Completely Differently
    Freelance writer Ash S during her bone broth experiment, where she drank it every day
    Nutrition I Drank Bone Broth Before Breakfast for a Month—and My Gut Health Wasn't the Only Thing That Changed
     
     
    A woman body brushing, taking a supplement, and heading to a workout class in gym city
    Female health I Asked Leading Women’s Health Experts About the Best Health Investment They’ve Ever Made. Their Answers Surprised Me
    Senior Health Editor trying Rapha, Pas Normal, Universal Colours, and Jelenew cycling gear, in Richmond Park and Brighton
    Fitness I'm a Fashion-Conscious Health Editor Who Just Started Cycling—6 Brands That Finally Nailed Style and Performance
     
     
    Latest in Features
    Charlotte Mensah Afro Hair
    Hair Charlotte Mensah Has Spent 40 Years Changing the Conversation Around Afro Hair—Now, Her Legacy Is Going on Display
    Aesthetics Safety
    Beauty "What Did She Expect?"—The Sexism and Classism Behind The UK’s Aesthetics Safety Crisis
     
     
    Wedding planning
    Relationships I Love My Fiancé, but I Resent the Emotional Labour of Planning Our Wedding
    Expensive beauty products, luxury beauty
    Beauty The Expensive Products That Are Actually Worth It, According to Beauty Editors Who’ve Tried Thousands
     
     
    logoCreated with Sketch.
    • Site Archive
    • Contact Future's experts
    • Contact us
    • Terms and conditions
    • Advertise with us
    • Privacy policy
    • Cookies policy
    • About us
    Add as a preferred source on Google Add as a preferred source on Google

    Marie Claire UK is part of Future plc, an international media group and leading digital publisher. Visit our corporate site.

    © Future Publishing Limited Quay House, The Ambury, Bath BA1 1UA. All rights reserved. England and Wales company registration number 2008885.