If you have chronic insomnia, the first-line treatment is not a sleeping pill. It is cognitive behavioural therapy for insomnia, or CBT-I. The American College of Physicians, the American Academy of Sleep Medicine, and the UK NICE all recommend CBT-I as the first treatment to try, ahead of any medication. The good news for people with schizophrenia is that CBT-I works in this population too — and may improve more than just sleep.
CBT-I is a structured, time-limited psychotherapy that combines sleep restriction, stimulus control, cognitive restructuring, and relaxation training, with growing evidence that it is feasible, well-tolerated, and effective for insomnia in people with schizophrenia.
Why behavioural treatment works
Chronic insomnia is rarely "just" insomnia. It is shaped by behaviours and thoughts that develop around bad nights — staying in bed for hours hoping to fall asleep, napping during the day, lying awake worrying about not sleeping, drinking more caffeine to compensate, going to bed earlier and earlier. Each adaptation makes future sleep worse. CBT-I targets those maintaining factors directly, retraining the relationship between bed, sleep, and the mind.
The core components
Sleep restriction
Counterintuitive but powerful. The therapist asks the person to spend less time in bed, matching time in bed to actual time asleep. If you sleep 5.5 hours but spend 8 hours in bed, your time in bed is restricted to 6 hours initially. Once sleep efficiency rises above ~85% for several nights, the window expands by 15–30 minutes. This builds sleep pressure and consolidates sleep into a single block.
Stimulus control
Reassociates the bed with sleep, not wakefulness. The classic rules:
- Use the bed only for sleep (and sex)
- Get out of bed if not asleep within ~20 minutes
- Do something quiet and dim, then return to bed when sleepy
- Get up at the same time every morning
- No daytime napping unless agreed with the therapist
Cognitive restructuring
Identifies and challenges unhelpful sleep beliefs. "If I do not sleep eight hours I cannot function." "Bad sleep will trigger another episode." These thoughts amplify arousal and perpetuate insomnia. Therapy helps the person hold them more lightly.
Relaxation training
Progressive muscle relaxation, slow breathing, body scans, and other techniques to reduce arousal at bedtime.
Sleep hygiene education
The basics — caffeine, light, alcohol, screens, room environment. Necessary but not sufficient on its own.
The evidence in schizophrenia
The most cited modern study is the BEST trial led by Daniel Freeman at Oxford, published in The Lancet Psychiatry (2015), which showed that CBT for insomnia in students with persecutory paranoia improved sleep and reduced paranoia. Subsequent work has extended these findings to people with diagnosed psychotic disorders. Smaller trials in people with schizophrenia have shown improvements in sleep parameters, with reasonable acceptability and no signal of harm.
What a typical course looks like
CBT-I is short — typically 4 to 8 sessions, weekly or biweekly. A course usually includes:
- Assessment. Sleep history, two-week sleep diary, screening for sleep apnea and other contributors.
- Education and rationale. Why CBT-I, what to expect, what sleep restriction will feel like in week one.
- Sleep restriction and stimulus control launched together.
- Weekly review. Diary review, window adjustment, troubleshooting.
- Cognitive work. Identifying unhelpful thoughts about sleep.
- Relapse prevention. Building a plan for future bad nights or stressful periods.
Adaptations for schizophrenia
Some practical adaptations make CBT-I more accessible in this population:
- Slower sleep restriction. Aggressive sleep restriction can be overwhelming. Many clinicians use a more gradual reduction in time in bed.
- Coordination with antipsychotic timing. If a sedating antipsychotic is on board, sleep restriction is tailored around the medication.
- Attention to nightmares and voices at night. Stimulus control can be combined with grounding techniques for nighttime symptoms.
- Family or peer support. Having someone aware of the plan can help with consistency.
- Tracking with apps. Sleep diaries can be replaced with a wearable or app like Frida.
What to expect, week by week
Week 1 is usually the hardest. Sleep restriction acutely worsens daytime sleepiness because total sleep time temporarily drops. By weeks 2 to 3, sleep usually consolidates. By weeks 4 to 6, total sleep time and sleep quality are typically improved. By the end of the course, most people have a sustainable sleep pattern they can maintain on their own.
You are at high risk of relapse, sleep restriction triggers significant symptom worsening, or you operate heavy machinery or drive long distances during the early weeks of treatment. These are not exclusions, but they are reasons to plan carefully.
How to access it
- In-person therapists trained in CBT-I, often through the Society of Behavioral Sleep Medicine directory.
- Digital CBT-I programs like Sleepio, SHUTi, or Somryst — telehealth or app-based, with growing evidence.
- Sleep clinics at academic medical centres often offer CBT-I as part of a broader sleep evaluation.
- VA sleep programs for veterans with insomnia and PTSD.
What CBT-I does not do
It is not a cure for severe sleep apnea (treat the apnea), severe nightmares (image rehearsal therapy or trauma-focused work), or acute psychosis-driven insomnia (medication adjustment is often needed first). CBT-I is one tool among several.
Bottom line
CBT-I is well-studied, effective, and increasingly accessible. In schizophrenia, the evidence base is smaller than in the general population but consistent. If you have chronic insomnia, ask your prescriber or therapist about CBT-I before escalating sleep medications. The skills are yours to keep.
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified mental health professional. If you or someone you know is in crisis, call or text 988 in the US, or your local emergency number.