Months after the fever broke and the positive test became a distant memory, you’re still lying awake at 2am, exhausted but wired. This is one of the most common and least talked-about parts of long Covid: the infection has gone, but your sleep hasn’t come back. If this sounds familiar, you’re not imagining it, and you’re not alone.
How common is insomnia after long Covid?
Sleep problems are one of the most frequently reported long Covid symptoms. A Cleveland Clinic analysis of nearly 1,000 adults living with long Covid found that 41% reported moderate to severe sleep disturbance, alongside 67% reporting moderate to severe fatigue. The two tend to travel together: the more disrupted the sleep, the worse the daytime exhaustion, and the harder the whole condition feels to live with.
A UK cohort study added an interesting twist: people who already had poorer sleep quality before catching Covid were more likely to go on to develop long Covid in the first place. Sleep, it turns out, isn’t just a casualty of long Covid, it may also be part of what makes some people more vulnerable to it.
Why does Covid disrupt sleep so long after the infection clears?
There’s rarely a single cause. In practice, several things tend to overlap:
- Lingering inflammation and a disrupted body clock. Viral illness can temporarily unsettle the systems that regulate your sleep-wake rhythm, and for some people that disruption outlasts the infection itself.
- Hypervigilance to bodily sensations. After weeks or months of unpredictable symptoms, it’s natural to become more alert to every twinge, breathlessness or racing heartbeat, including at night, which keeps the nervous system too activated to drop into sleep.
- Anxiety about health and the future. Worry about whether you’ll “ever feel normal again” is exhausting in itself, and worry is one of the most reliable ways to keep a brain awake at bedtime.
- Daytime napping and resting in bed. Understandably, many people with long Covid rest frequently during the day to manage fatigue. But extra time in bed, and naps that eat into your overall sleep drive, can quietly erode your ability to sleep solidly at night.
The vicious cycle: when fatigue and insomnia feed each other
This is the part that catches people out. Long Covid fatigue pushes you towards more rest, less activity and more time in bed. But your body only has so much “sleep pressure” to spend each day, and if it’s used up lying down at 3pm, there’s less of it left to carry you through the night. Poor sleep then deepens the fatigue, which pushes you towards even more daytime rest, and the cycle tightens.
It’s a pattern we see often in people recovering from illness, not only long Covid, and it’s exactly why generic advice to “just rest more” can backfire. Our guide on why you wake up in the middle of the night looks at a closely related mechanism, where conditioned arousal, rather than tiredness itself, is what’s keeping sleep fragmented.
When it isn’t “just” long Covid: signs to see your GP
Not every sleep problem after Covid is insomnia in the clinical sense, and it’s important not to assume it is. Speak to your GP if, alongside poor sleep, you also notice:
- Loud snoring, gasping or pauses in breathing during sleep, which can point towards sleep-disordered breathing such as obstructive sleep apnoea
- Severe, unrefreshing daytime sleepiness rather than the wired-but-tired feeling typical of insomnia
- Chest pain, significant breathlessness, or new palpitations
- Low mood or anxiety that feels unmanageable day to day
Your GP can rule out these overlapping conditions and make sure any investigation or treatment for long Covid itself is properly coordinated alongside sleep support.
Why rest and sleeping pills alone don’t fix it
It’s a reasonable instinct to reach for more rest, or to ask for something to help you sleep. But clinical guidance for GPs managing long Covid notes that patients often don’t see lasting improvement from medication alone, and the evidence for supplements such as melatonin specifically in long Covid sleep problems is still thin. Sleeping tablets can also mask the underlying pattern that’s keeping your body clock disrupted, rather than resolving it. If you’re currently taking sleep medication and wondering about your options, our article on insomnia treatment without medication explains what the alternatives look like, and you should always speak to your GP before making any change to medication you’ve been prescribed.
CBT-I: the evidence-based insomnia treatment for long Covid
Cognitive behavioural therapy for insomnia (CBT-I) is the approach recommended as first-line insomnia treatment by NICE, and it’s increasingly being studied specifically in people recovering from Covid. A 2024 study in the Journal of Clinical Sleep Medicine identified insomnia as common after Covid infection and suggested that evidence-based approaches like CBT-I are well suited to treating it. Early trials, including a six-week CBT-I programme in healthcare workers with long Covid, have reported meaningful improvements in insomnia severity alongside gains in mood.
CBT-I works because it addresses the habits and thought patterns that keep insomnia going, long after the original trigger (in this case, a viral infection) has passed. Rather than fighting sleep harder, it rebuilds your body’s confidence that bed is a place where sleep reliably happens. You can read more about the mechanism behind this in why CBT-I works.
How CBT-I is adapted for people with long Covid
Standard CBT-I is already a careful, structured process, but when fatigue and energy limits are part of the picture, a few adjustments matter:
- Gentler pacing of sleep restriction. This core CBT-I technique narrows time in bed to match actual sleep, but with long Covid it needs to be balanced against the risk of post-exertional symptom flare-ups.
- Working with naps, not just against them. Rather than banning daytime rest outright, treatment looks at timing and length so naps support recovery without undermining night-time sleep.
- Addressing health anxiety directly. Because hypervigilance to symptoms is so common, CBT-I for long Covid often incorporates specific strategies for calming that nighttime body-scanning.
- Realistic, flexible goals. Progress is measured gradually, in step with the broader recovery from long Covid, rather than expecting sleep to “snap back” on its own timetable.
This is a genuine, structured insomnia treatment, not a quick fix, and for most people it takes a few weeks of consistent practice to see the shift. If you want a sense of what the process actually involves, our full CBT-I insomnia treatment page walks through it step by step, and our complete guide to insomnia is a good place to start if you’re new to all of this.
Where to start tonight
You can’t force your way back to normal sleep through sheer rest, and you shouldn’t have to just live with it either. A good first step is noticing your actual pattern: when you’re in bed, when you’re actually asleep, and when the naps are creeping in. Our article on how to fall asleep fast covers some immediately useful techniques, though if your insomnia has been going on for more than a few weeks, it’s worth looking at the bigger picture rather than just the bedtime routine.
Frequently asked questions
Does long Covid insomnia go away on its own?
For some people it eases gradually as the wider long Covid recovery progresses, but for many the sleep disruption becomes self-sustaining, maintained by habits like extra time in bed and worry about not sleeping, rather than by the virus itself. In these cases it tends not to resolve without some change to the pattern that’s keeping it going.
Is it safe to do CBT-I if I’m still fatigued from long Covid?
Yes, but it should be paced carefully. CBT-I for long Covid typically uses a gentler version of sleep restriction and factors in your current energy levels, rather than applying a standard, one-size-fits-all programme. This is one reason it helps to work with a specialist who understands long Covid rather than following generic advice alone.
Should I nap during the day if I have long Covid and insomnia?
Short, well-timed rest can be genuinely helpful for long Covid fatigue, but long or late-afternoon naps can reduce your drive to sleep at night and deepen insomnia. A CBT-I specialist can help you find a nap pattern that supports daytime recovery without sabotaging the night.
Could my sleep problem be something other than insomnia?
It’s possible. Loud snoring, breathing pauses, or very heavy unrefreshing daytime sleepiness can point to a separate issue such as sleep apnoea, which needs a different approach. Speak to your GP if you notice any of these alongside your sleep difficulties.
In summary
Insomnia after long Covid is common, understandable, and treatable. It’s rarely solved by rest alone, and sleeping pills tend to mask the pattern rather than change it. CBT-I, adapted carefully for the fatigue and health anxiety that so often come with long Covid, is the evidence-based route back to reliable sleep. If sleep hasn’t come back along with the rest of you, it’s worth finding out exactly what’s keeping it away. Start with our free insomnia self-assessment to get a clearer picture of your pattern, or get in touch if you’d like to talk it through with Dr Jonathan Kushnir directly.