Chronic insomnia: the UK guide

Chronic insomnia explained: the signs, why it persists, why sleep tips aren't enough, how it's treated in the UK, and where to get help.

Seona Clinical Team

The short answer: chronic insomnia means trouble falling asleep, staying asleep or waking too early, on at least three nights a week, for three months or more, and it affects how you function during the day. It's a recognised medical condition, not a personal failing, and it's treatable. UK guidance recommends cognitive behavioural therapy for insomnia (CBT-I) as the first treatment. This guide covers the signs, the causes, why sleep tips often aren't enough, how it's treated in the UK, and where to get help.

If you're reading this, there's a good chance you've had more bad nights than you can count. You've probably tried everything: the tea, the apps, the blackout blinds, the no-screens rule. Somebody has probably told you it's stress, or your age, or just how some people are.

Some of that may be true. But once poor sleep has gone on for months, it usually becomes a problem in its own right, with its own causes and its own treatment. That's what this guide is about: what chronic insomnia is, why it takes hold, and what can be done about it, in plain English.

What is chronic insomnia?

Insomnia isn't simply "not getting enough sleep". It means regularly finding it hard to get to sleep, waking several times in the night, lying awake, or waking early and not dropping off again, and then feeling it during the day: tired, irritable, unable to concentrate.

How long it has lasted matters. Poor sleep for less than three months counts as short-term insomnia. Three months or longer, and it's long-term, or chronic.

Sleep specialists add a little more precision. Under the International Classification of Sleep Disorders, chronic insomnia means trouble sleeping on three or more nights a week for more than three months, despite having enough opportunity to sleep, with consequences during the day.

Two parts of that definition catch people out.

The daytime impact. Insomnia is defined partly by what it does to your days. Someone who sleeps five hours and feels fine doesn't have insomnia. Someone who sleeps six and spends every afternoon in a fog might.

The opportunity to sleep. If you're only getting five hours because of night shifts, a newborn or a caring role, that's a shortage of sleep, not insomnia. The two can overlap, and one can turn into the other, but they're different problems with different fixes.

The three ways insomnia shows up

Insomnia isn't one experience. Broadly, it comes in three patterns: trouble getting to sleep, trouble staying asleep, and waking earlier than you want to.

Trouble falling asleep. You go to bed tired and lie there wide awake, usually with a busy mind, anxiety or a bedtime routine that works against you. Read more: Why can't I fall asleep, even when I'm exhausted?

Trouble staying asleep. You drop off easily, then wake in the small hours and can't get back. Read more: Why do I wake up at 3am every night?

Waking too early. You wake well before your alarm and that's the end of the night.

Many people have more than one of these, and the pattern can shift over time. It's still worth noticing which one describes you best, because the triggers and the most useful first steps differ.

How common is chronic insomnia?

Far more common than people assume. Around a third of adults report at least one insomnia symptom, and 6 to 10% meet the strict criteria for chronic insomnia disorder.

Most of them are managing alone. When The Sleep Charity surveyed 2,000 UK adults in 2024, only one in six people with insomnia symptoms had been diagnosed, and 69% of those with sleep problems had never sought support.

What causes chronic insomnia?

Rarely one thing. The everyday triggers are familiar: stress, anxiety or depression; noise; a bedroom that's too hot or cold; alcohol, caffeine or nicotine; shift work and jet lag. Health conditions play a part too:

  • Anxiety. Anxiety and insomnia feed each other in both directions. Read more: Sleep anxiety: when worrying about sleep keeps you awake
  • Menopause. Sleep problems affect around 40 to 56% of women during the menopause transition. Read more: Menopause insomnia: you don't have to just ride it out
  • Sleep apnoea, where breathing stops and starts during sleep, often without the sleeper knowing.
  • Restless legs syndrome, an uncomfortable urge to move your legs that is usually worse at night.
  • Depression, which often shows up as waking very early in the morning.

Why insomnia outlasts its trigger

This is the part many people find most useful to understand. Sleep researchers describe chronic insomnia with a "3P" model:

  • Predisposing factors make some people more prone to poor sleep in the first place: genetics, temperament, a tendency to worry.
  • Precipitating factors set it off, usually a stressful event.
  • Perpetuating factors keep it going: a state of heightened alertness, the habits we develop to cope, and the strain that builds up around bedtime.

That third group is why insomnia so often carries on after the original stress has passed. After a run of bad nights it's natural to go to bed earlier, lie in, nap in the afternoon, or stay in bed hoping sleep will come. Each of these makes sense in the moment. Over time, though, they teach your brain to link bed with being awake, and bedtime with dread. The trigger is gone; the insomnia has learned to stand on its own.

Why sleep tips often aren't enough

Sleep hygiene, meaning a regular routine, a dark quiet bedroom, less caffeine, is good advice. It's just not treatment. For chronic insomnia, clinical reviews describe sleep hygiene as minimally effective as a stand-alone approach. It works best as one strand of something more structured.

Patients have been saying this for years. In a UK study of GP consultations about sleep, people described generic sleep hygiene advice as unhelpful because they'd already tried it all before booking the appointment. One put it bluntly: "Not sleeping properly is not taken seriously in the scale of things."

So if you've done everything right and still can't sleep, you haven't failed. You've been given a tool that wasn't designed for the job.

Does chronic insomnia go away?

Short-term insomnia usually does, once the situation behind it settles. Chronic insomnia is more stubborn.

A three-year study of adults with insomnia found that 46% still had it at the end, and that 27% of those whose sleep had recovered later relapsed. A five-year study reached the same conclusion: insomnia tends to persist, which makes spotting it and acting early important.

That's not a reason to lose hope. It's a reason not to wait it out. Chronic insomnia is treatable, and good treatment is built to last.

How chronic insomnia is treated in the UK

CBT for insomnia (CBT-I)

UK guidance, including NICE, recommends cognitive behavioural therapy for insomnia as the first-line treatment. It isn't a relaxation course, and it isn't general talking therapy. It's a structured programme, usually six to eight sessions, aimed squarely at the habits and thoughts that keep insomnia going:

  • Sleep restriction: temporarily limiting time in bed to match the sleep you're actually getting, then gradually extending it
  • Stimulus control: rebuilding the link between bed and sleep, for example by only going to bed when sleepy and getting up if you can't sleep
  • Cognitive therapy: working on the worries and beliefs about sleep that keep your mind on alert
  • Sleep hygiene: as a supporting strand rather than the whole plan

The evidence holds up over time. A review of 30 clinical trials found CBT-I's benefits were still clinically significant a year after treatment. Digital versions work too: a 2025 review of 29 trials found fully automated programmes had moderate to large effects on insomnia severity, though therapist-supported CBT-I did better.

It isn't a cure for everyone. European sleep specialists estimate that probably at least 30 to 40% of people treated don't reach full remission, which is why follow-up matters as much as the first course.

Other options

For some people, a prescriber may consider prescription treatment as part of a plan. That's a decision made after a proper assessment, and it isn't right for everyone.

How to get CBT-I in the UK

Recommended first, but not easy to get. In a study of GP records across three North London boroughs, only 1.7% of people with insomnia had been referred for CBT-I. What's available depends on where you live:

What you can do now

None of this will fix chronic insomnia on its own, but it gives any treatment the best chance. The basics:

  • go to bed only when you feel sleepy
  • get up at the same time every day, even after a bad night
  • wind down for at least an hour before bed
  • keep the bedroom dark and quiet
  • exercise regularly, but not in the four hours before bed
  • avoid alcohol, tea and coffee, and don't smoke, in the six hours before bed
  • skip daytime naps

Two more that are easy to overlook. Get outside in the morning, because daylight tells your brain the day has started and anchors your body clock for the night ahead. And keep a sleep diary for two weeks: when you went to bed, when you woke, how often you woke in the night, and what your day was like. It turns "I just can't sleep" into something a clinician can work with.

When to get help

See your GP if changing your habits hasn't helped, sleep has been a problem for months, or it's affecting your daily life. You don't have to wait that long. The Sleep Charity's advice is to speak to your GP after four weeks of difficult sleep if it's affecting your wellbeing, before it becomes chronic.

Get advice sooner if:

  • someone notices your breathing stopping and starting, or gasping or choking noises while you sleep
  • you often feel very tired during the day, especially if you drive
  • an urge to move your legs is keeping you awake
  • poor sleep comes with low mood or anxiety that's getting worse

How Seona can help

Seona is a regulated UK online clinical service for chronic insomnia. Seona is the trading name of Icon Pharmacy Ltd, a GPhC-registered pharmacy (1031045).

  • Start with a free sleep check. It takes two minutes, and you don't need an account.
  • A named prescriber reviews your case. Every case is reviewed by a UK-registered prescriber. Our clinical lead is Vaibhav Shah, Pharmacist Independent Prescriber (GPhC 2082703).
  • Not everyone is approved. Treatment is only prescribed where clinically appropriate. If Seona isn't right for you, we'll tell you and point you towards the right help.
  • Care continues. We keep reviewing whether treatment is still right for you.

You can read how we assess chronic insomnia and how the service works first.

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Can't sleep? You're not alone, and it's not your fault.

Frequently asked questions

What is chronic insomnia? Trouble falling asleep, staying asleep or waking too early, on at least three nights a week for three months or more, despite having the chance to sleep, and affecting how you function during the day.

What's the difference between short-term and chronic insomnia? Duration. Insomnia lasting less than three months is short-term. Three months or longer is long-term, or chronic.

What causes chronic insomnia? Usually a mix. Something sets it off, often stress, and then habits and heightened alertness keep it going. Anxiety, depression, menopause, sleep apnoea and restless legs can all play a part.

Is chronic insomnia treatable? Yes. UK guidance recommends CBT for insomnia (CBT-I) as the first treatment, and its benefits can last well beyond the end of the programme.

Can I get CBT for insomnia on the NHS? It depends where you live. It's free online in Scotland and Wales. In England, availability varies by area, so ask your GP or your local NHS Talking Therapies service.

When should I see a doctor about insomnia? If changing your habits hasn't helped, it's been going on for months, or it's affecting your daily life. Go sooner if you have signs of sleep apnoea, low mood, or daytime sleepiness that affects driving.

This article is general information, not medical advice. If you're worried about your sleep or your health, speak to a healthcare professional. If poor sleep comes with low mood or thoughts of harming yourself, contact your GP or NHS 111, or call Samaritans free on 116 123, any time.

References

  1. NHS. Insomnia
  2. NHS inform. Sleep problems and insomnia self-help guide
  3. McNamara S, Spurling BC, Bollu PC. Chronic Insomnia. StatPearls, 2025
  4. The Sleep Charity. New report: 14m+ undiagnosed sleep disorders. 2024
  5. Alvaro PK, Roberts RM, Harris JK. Bidirectionality between sleep disturbances, anxiety and depression. SLEEP, 2013
  6. Women's Health Concern. Menopause and sleep disturbance. 2025
  7. NHS. Restless legs syndrome; Obstructive sleep apnoea; Depression symptoms
  8. Dyas JV et al. Patients' and clinicians' experiences of consultations for sleep problems. BJGP, 2010
  9. Morin CM et al. The natural history of insomnia. Arch Intern Med, 2009
  10. Morin CM et al. Insomnia over 5 years. JAMA Netw Open, 2020
  11. Walker J et al. CBT-I: a primer. 2022
  12. van der Zweerde T et al. CBT-I long-term effects meta-analysis. Sleep Med Rev, 2019
  13. Hwang et al. Digital CBT-I meta-analysis. npj Digital Medicine, 2025
  14. Riemann D et al. Insomnia guidelines: the European update 2023. 2024
  15. Waterman et al. Insomnia and its treatment in North Central London. BJPsych Open, 2026
  16. The Sleep Charity. Insomnia; Sleep diary

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