Sleep Problems After Concussion: How CBT-I Can Help Recovery

Lorraine Irlam, Registered Clinical Counsellor
1 day ago
5 min read

June is Brain Injury Awareness Month in Canada — an important reminder that the effects of concussion and traumatic brain injury (TBI) often extend far beyond the initial injury itself. While symptoms such as headaches, dizziness, and memory problems are widely recognized, one of the most common and disruptive consequences of brain injury is frequently overlooked: chronic sleep problems.

Hand holding a white brain model against a dark green background

Many people experience insomnia after concussion or TBI, even months or years later. Difficulty falling asleep, waking repeatedly during the night, vivid dreams, poor-quality sleep, excessive daytime fatigue, and feeling “tired but wired” are all common complaints after brain injury.

Unfortunately, poor sleep after concussion can also worsen many other symptoms associated with TBI — including depression, anxiety, irritability, pain, fatigue, cognitive difficulties, and emotional regulation.

The good news is that research increasingly shows that treating insomnia after brain injury can improve not only sleep, but also overall recovery and quality of life. The most evidence-based approach for chronic insomnia is Cognitive Behavioural Therapy for Insomnia (CBT-I), an effective, medication-free treatment that helps retrain the brain and body for healthier sleep.

How Common Are Sleep Problems After Concussion and TBI?

Sleep disturbances are extremely common after traumatic brain injury.

Research suggests that approximately 30% to 70% of individuals develop significant sleep problems following concussion or TBI, depending on the severity of the injury and how sleep disturbance is measured. Insomnia is among the most frequently reported long-term symptoms.

A major meta-analysis published in Sleep Medicine found that roughly half of individuals experience ongoing sleep disturbances after traumatic brain injury, while many develop chronic insomnia that can persist for years.

Sleep problems can occur after both mild concussions and more severe brain injuries. Even individuals whose scans appear “normal” may still struggle with persistent insomnia, fatigue, and unrefreshing sleep.

Common Sleep Problems After Brain Injury

People recovering from concussion or TBI may experience:

Difficulty falling asleep
Frequent awakenings
Early morning waking
Non-restorative sleep
Excessive daytime sleepiness
Irregular sleep schedules
Nightmares or vivid dreams
Anxiety about sleep
Increased sensitivity to stress and stimulation

Some individuals also develop other sleep disorders after brain injury, such as sleep apnea or circadian rhythm disruptions.

Because sleep affects nearly every aspect of brain functioning, ongoing insomnia after concussion can significantly interfere with symptom recovery.

Person lying awake in bed at night with dramatic light and shadow across their face, representing insomnia, sleep disturbance, fatigue, or difficulty sleeping after concussion or brain injury.

How Poor Sleep Can Worsen Concussion and TBI Symptoms

Sleep plays a critical role in cognitive functioning, emotion regulation, memory consolidation, pain processing, nervous system regulation, and overall brain health. The deep restorative stage of sleep - known as "slow wave sleep" - is responsible for cellular and tissue and muscle repair. This is crucial in recovering from injuries, including TBI.

When insomnia becomes chronic after brain injury, it often intensifies many other symptoms people are already struggling with.

Research has linked sleep disturbance after TBI with:

Increased depression
Higher anxiety levels
Greater irritability
Poor concentration and focus
Memory difficulties
Slower cognitive processing
Increased fatigue
More pain and headaches
Reduced quality of life
Poorer rehabilitation outcomes

For many individuals, poor sleep becomes part of a frustrating cycle: the worse sleep becomes, the harder it becomes to cope emotionally and cognitively — and increased stress then further worsens insomnia.

Why Chronic Insomnia Often Persists After Concussion

Many people assume insomnia after concussion is caused solely by the brain injury itself. While neurological changes may absolutely contribute initially, chronic insomnia is often maintained over time by additional physiological, behavioural, and psychological factors.

For example, people understandably begin:

Spending more time in bed trying to catch up on sleep
Napping excessively during the day
Worrying intensely about not sleeping
Monitoring symptoms constantly
Developing fear and frustration around bedtime
Sleeping irregular hours
Avoiding activity due to fatigue

Unfortunately, these very understandable coping strategies – which can be quite helpful in the short term - can unintentionally train the nervous system to remain hyper-alert and perpetuate insomnia long after the initial injury.

This is one reason why targeted insomnia treatment is often necessary.

What Is CBT-I (Cognitive Behavioural Therapy for Insomnia)?

CBT-I is considered the first-line treatment for chronic insomnia by multiple sleep medicine organizations.

Unlike sleeping pills, CBT-I addresses the underlying factors that maintain insomnia. It is a structured, evidence-based, medication-free therapy designed to help restore healthier sleep patterns and reduce sleep-related anxiety and hyperarousal.

CBT-I may include:

Sleep scheduling strategies
Rebuilding healthy sleep drive
Reducing prolonged wakefulness in bed
Addressing anxiety about sleep
Calming physiological hyperarousal
Cognitive strategies targeting unhelpful thoughts about sleep
Improving consistency and sleep confidence

Importantly, CBT-I is not simply “sleep hygiene.” While sleep hygiene tips can be useful, chronic insomnia usually requires more comprehensive treatment. What most people don't know is that sleep hygiene is used as a placebo in sleep research! On its own, it may not be enough.

Research on CBT-I for Concussion and Brain Injury

Research on CBT-I for traumatic brain injury continues to grow and is increasingly encouraging.

A pilot randomized controlled trial involving adolescents with persistent post-concussion symptoms found that CBT-I significantly improved insomnia symptoms and sleep quality.

More recent research involving individuals with moderate-to-severe traumatic brain injury has also shown promising improvements in sleep following CBT-I-based interventions.

Additional studies involving veterans and military personnel with TBI have found that CBT-I can meaningfully reduce insomnia severity and improve overall functioning.

Importantly, improving insomnia may also positively affect:

Mood
Anxiety
Emotional resilience
Daytime functioning
Fatigue
Pain coping
Cognitive performance
Overall quality of life

This is especially important because sleep and mental health are so closely interconnected after concussion and TBI.

CBT-I Is a Medication-Free Approach to Better Sleep

Many people with post-concussion insomnia worry they will need sleeping pills indefinitely. While medication can sometimes play a short-term role, many individuals prefer a non-medication approach or want to reduce reliance on sleep aids over time.

CBT-I helps individuals develop long-term skills for improving sleep naturally and sustainably.

For many people recovering from concussion or traumatic brain injury, improving sleep becomes an important foundation for improving emotional well-being, coping, energy, concentration, chronic pain, and day-to-day functioning.

Recovery After Brain Injury Is Often Non-Linear

One of the most emotionally difficult aspects of concussion and TBI recovery is that progress is rarely perfectly linear. Symptoms often fluctuate, and many people feel discouraged when recovery takes longer than expected.

Persistent insomnia can add another layer of stress, hopelessness, and exhaustion.

The encouraging news is that chronic insomnia is highly treatable — even when it has persisted for months or years - especially years! Addressing sleep problems directly may help support broader recovery and improve quality of life after brain injury.

Brain Injury and Concussion Resources in Canada

BC Brain Wellness Program

The BC Brain Wellness Program offers education, wellness resources, and support for individuals living with neurological conditions, including concussion and brain injury.

Mindful Concussion

A Canadian resource focused on concussion recovery, mindfulness, education, and symptom management.

Brain Injury Canada Resource Site

National Canadian resources, education, advocacy, and support services related to brain injury recovery.