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Insomnia

By the AllHealth UK editorial teamLast reviewed Next review due Compiled from published NHS and NICE guidance. Not reviewed by a clinician.

Key facts

Insomnia is difficulty falling asleep, staying asleep, or waking too early and not being able to get back to sleep. It is a common problem and can significantly affect how you function during the day.

Most often affects:WomenAdults over 60Shift workersPeople with mental health conditions

What commonly causes insomnia

  • Stress and anxiety — racing thoughts at bedtime
  • Poor sleep habits — irregular schedule, screens in bed
  • Caffeine, alcohol, or nicotine — especially in the evening
  • Depression or other mental health conditions
  • Chronic pain or discomfort
  • Medication side effects (steroids, antidepressants, beta-blockers)
  • Sleep apnoea — snoring or breathing that stops and starts at night, leaving you tired in the day
  • The menopause — night sweats and disturbed sleep
  • An overactive thyroid or restless legs syndrome

What helps at home

  • Only go to bed when you're sleepy — not at a fixed clock time
  • Avoid all screens (phone, TV, laptop) for 1 hour before bed
  • Keep your bedroom cool, dark and quiet — blackout curtains or an eye mask, and earplugs, can help
  • Do not drink alcohol, tea or coffee — or smoke — in the 6 hours before bed
  • Try a relaxing bedtime routine — warm bath, reading, gentle stretching
  • If you can't sleep after 20 minutes, get up and do something calm, then return
  • Get up at the same time every day, even after a bad night, and do not nap during the day

When to get help

These three levels are different. Getting the level right is the single most useful thing this page can do for you.

Non-urgent advice: see a GP if

  • Insomnia has lasted more than 4 weeks despite changing your sleep routine
  • Daytime sleepiness is affecting your work or your driving
  • Your partner reports loud snoring with pauses in breathing
  • You feel persistently low in mood as well as unable to sleep
  • You are relying on sleeping tablets or alcohol to get to sleep

Urgent advice: ask for an urgent GP appointment or call 111 if

  • You have not slept at all for several nights and feel unable to cope
  • You are falling asleep during the day while driving or at work
  • You feel hopeless or unsafe as well as unable to sleep
  • You stopped sleeping tablets suddenly and now feel shaky or unwell

Immediate action required: call 999 or go to A&E if

  • Extreme sleep deprivation causing hallucinations or confusion

What to do next

If things feel unmanageable right now, start at the top. All of these are free, and you can refer yourself to NHS talking therapies without going through a GP.

Questions people ask about insomnia

Reducing the chance of it coming back

  • Go to bed and get up at roughly the same times, including at weekends
  • Use your bed only for sleep and intimacy — not work or scrolling
  • Get daylight exposure in the morning — it sets your circadian clock
  • Exercise regularly during the day, but not in the 4 hours before bed

Conditions this can be part of

Listed alphabetically, not by likelihood — this page does not tell you which one you have.

  • Chronic fatigue syndrome
  • Depression
  • Restless leg syndrome
  • Sleep apnoea

Sources and further reading

This page was written from the following published guidance. All links checked 26 August 2026.

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