Canada: Concussions, Sleep And Good Health

Last Updated: December 22 2016
Article by Michael J. Henry

English dramatist, Thomas Dekker once said "sleep is the golden chain that ties health and our bodies together." But can sleep ever be dangerous to a person's health? For many years, people mistakenly believed that sleeping after sustaining a concussion could result in a coma or death. However, current medical evidence shows that the "golden chain" is stronger than we once believed as crucial rest in the form of sleeping actually helps the post-concussion healing process. In this blog, I review the nature and effect of a concussion, assessment and treatment, the effect of sleep on a concussion and post-concussion treatment recommendations.

The Nature and Effect of a Concussion

A concussion is an acquired brain injury (ABI) that is not related to congenital or degenerative disease. Concussions occur by a swirling movement of the brain within the skull. It can be the result of a direct blow to person's head or body, or from a sudden and jarring whiplash effect. A person does not necessarily lose consciousness when they experience a concussion. These types of brain injuries can be temporary or permanent, and can cause partial or functional disability.

The Brain Injury Association of Canada characterizes a concussion as "a mild type of Traumatic Brain Injury" which, depending on severity, may have the following effects: headache, nausea and vomiting, impaired vision, sensitivity to light or noise, vertigo, dizziness, and issues with balance, seizure, disorientation or confusion, memory loss, fatigue, malaise or sluggishness, cognitive impairment, inability to focus and/or increased irritability or frustration.

Assessment and Treatment

The most common medical tests for assessing the effects and severity of a concussion include:

  • Neurological Assessment – a neuropsychological test which evaluates motor and sensory skills, cranial nerve functioning, hearing, vision, speech, balance, coordination, cognitive ability, mood, temperament and behaviour.
  • Computed Tomography (CT-Scan) – a medical imaging procedure that produces detailed images of the brain. This test is typically used to determine whether a patient's brain is bleeding or swelling.
  • Magnetic Resonance Imaging (MRI) – using non-invasive magnetic field and radio waves, a medical imaging test creates a detailed picture of the brain.

CT-Scans and MRIs sometimes do not reveal signs of a concussion, but the damage from a concussion may still be present in the brain. Such negative results do not necessarily indicate a lack of injury.

Effect of Sleep on Concussions

Some doctors who specialize in brain injury treatment state that rest is the best course of care for a concussion. To use an analogy, if the brain is an engine, following a concussion it runs out of gas at a much faster rate. Rest is the only way to refill the brain's gas tank. Rest is also critical to recovery because your brain continues to heal even after all concussion symptoms disappear. Complete rest for concussions is both physical and cognitive. You must not watch television, listen to music, read, text or use a telephone in any way, or use a computer or game system.

Rest also includes sleep. Modern medical evidence has confirmed that it is not always necessary for a concussed patient to remain awake. In order to determine whether it is safe for a person who sustained a concussion to sleep, the person must demonstrate the following: complete alertness, ability to maintain a conversation, stable walking, non-dilated pupils, and lack of nausea and vomiting.

Although it is safe to allow a person to sleep if they satisfy the above criteria, it is also paramount to monitor them and initially to wake them every four hours. During post-concussion recovery, you may feel more fatigued than usual. Sufficient sleep is essential to give your brain adequate time to recover.

Post-Concussion Treatment Recommendations

For the first 24-48 hours following a concussion, in addition to rest, it is critical that you do not drive. Do not drive until you are able to concentrate and focus without difficulty. Do not consume alcohol, recreational drugs, or sleeping pills. Do not participate in any sports or activities that require physical exertion.

You should start to feel better within a few days of sustaining a concussion and barring any complications, you should be completely recovered within approximately four weeks. A family doctor should monitor your symptoms and refer you to a brain injury specialist if you do not improve within four weeks to three months.

In some cases, physical, mental, emotional and behavioural issues may persist. Commonly referred to as "post-concussive syndrome," this condition can include persistent headaches, prolonged inability to focus, concentrate or reason, continued memory impairment, significant dizziness and balance issues, tinnitus (ringing in the ears), mood swings and a "short-fuse" temper, anxiety or depression, and an inability to sleep or disrupted sleep. Treatment of post-concussive syndrome typically involves consultation with a neurologist or neuropsychologist.

Life Post-Concussion

Although the prognosis for recovery from concussions is generally good, the potential for an acquired brain injury to significantly impact your life is very real. Long-term effects of such an injury can cause permanent damage to you and your loved ones. If you believe that you have suffered an acquired brain injury as the result of an accident, it is imperative to seek out the best possible care immediately and have proper support during your recovery.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

To print this article, all you need is to be registered on

Click to Login as an existing user or Register so you can print this article.

In association with
Up-coming Events Search
Font Size:
Mondaq on Twitter
Register for Access and our Free Biweekly Alert for
This service is completely free. Access 250,000 archived articles from 100+ countries and get a personalised email twice a week covering developments (and yes, our lawyers like to think you’ve read our Disclaimer).
Email Address
Company Name
Confirm Password
Mondaq Topics -- Select your Interests
 Law Performance
 Law Practice
 Media & IT
 Real Estate
 Wealth Mgt
Asia Pacific
European Union
Latin America
Middle East
United States
Worldwide Updates
Check to state you have read and
agree to our Terms and Conditions

Terms & Conditions and Privacy Statement (the Website) is owned and managed by Mondaq Ltd and as a user you are granted a non-exclusive, revocable license to access the Website under its terms and conditions of use. Your use of the Website constitutes your agreement to the following terms and conditions of use. Mondaq Ltd may terminate your use of the Website if you are in breach of these terms and conditions or if Mondaq Ltd decides to terminate your license of use for whatever reason.

Use of

You may use the Website but are required to register as a user if you wish to read the full text of the content and articles available (the Content). You may not modify, publish, transmit, transfer or sell, reproduce, create derivative works from, distribute, perform, link, display, or in any way exploit any of the Content, in whole or in part, except as expressly permitted in these terms & conditions or with the prior written consent of Mondaq Ltd. You may not use electronic or other means to extract details or information about’s content, users or contributors in order to offer them any services or products which compete directly or indirectly with Mondaq Ltd’s services and products.


Mondaq Ltd and/or its respective suppliers make no representations about the suitability of the information contained in the documents and related graphics published on this server for any purpose. All such documents and related graphics are provided "as is" without warranty of any kind. Mondaq Ltd and/or its respective suppliers hereby disclaim all warranties and conditions with regard to this information, including all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement. In no event shall Mondaq Ltd and/or its respective suppliers be liable for any special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of information available from this server.

The documents and related graphics published on this server could include technical inaccuracies or typographical errors. Changes are periodically added to the information herein. Mondaq Ltd and/or its respective suppliers may make improvements and/or changes in the product(s) and/or the program(s) described herein at any time.


Mondaq Ltd requires you to register and provide information that personally identifies you, including what sort of information you are interested in, for three primary purposes:

  • To allow you to personalize the Mondaq websites you are visiting.
  • To enable features such as password reminder, newsletter alerts, email a colleague, and linking from Mondaq (and its affiliate sites) to your website.
  • To produce demographic feedback for our information providers who provide information free for your use.

Mondaq (and its affiliate sites) do not sell or provide your details to third parties other than information providers. The reason we provide our information providers with this information is so that they can measure the response their articles are receiving and provide you with information about their products and services.

If you do not want us to provide your name and email address you may opt out by clicking here .

If you do not wish to receive any future announcements of products and services offered by Mondaq by clicking here .

Information Collection and Use

We require site users to register with Mondaq (and its affiliate sites) to view the free information on the site. We also collect information from our users at several different points on the websites: this is so that we can customise the sites according to individual usage, provide 'session-aware' functionality, and ensure that content is acquired and developed appropriately. This gives us an overall picture of our user profiles, which in turn shows to our Editorial Contributors the type of person they are reaching by posting articles on Mondaq (and its affiliate sites) – meaning more free content for registered users.

We are only able to provide the material on the Mondaq (and its affiliate sites) site free to site visitors because we can pass on information about the pages that users are viewing and the personal information users provide to us (e.g. email addresses) to reputable contributing firms such as law firms who author those pages. We do not sell or rent information to anyone else other than the authors of those pages, who may change from time to time. Should you wish us not to disclose your details to any of these parties, please tick the box above or tick the box marked "Opt out of Registration Information Disclosure" on the Your Profile page. We and our author organisations may only contact you via email or other means if you allow us to do so. Users can opt out of contact when they register on the site, or send an email to with “no disclosure” in the subject heading

Mondaq News Alerts

In order to receive Mondaq News Alerts, users have to complete a separate registration form. This is a personalised service where users choose regions and topics of interest and we send it only to those users who have requested it. Users can stop receiving these Alerts by going to the Mondaq News Alerts page and deselecting all interest areas. In the same way users can amend their personal preferences to add or remove subject areas.


A cookie is a small text file written to a user’s hard drive that contains an identifying user number. The cookies do not contain any personal information about users. We use the cookie so users do not have to log in every time they use the service and the cookie will automatically expire if you do not visit the Mondaq website (or its affiliate sites) for 12 months. We also use the cookie to personalise a user's experience of the site (for example to show information specific to a user's region). As the Mondaq sites are fully personalised and cookies are essential to its core technology the site will function unpredictably with browsers that do not support cookies - or where cookies are disabled (in these circumstances we advise you to attempt to locate the information you require elsewhere on the web). However if you are concerned about the presence of a Mondaq cookie on your machine you can also choose to expire the cookie immediately (remove it) by selecting the 'Log Off' menu option as the last thing you do when you use the site.

Some of our business partners may use cookies on our site (for example, advertisers). However, we have no access to or control over these cookies and we are not aware of any at present that do so.

Log Files

We use IP addresses to analyse trends, administer the site, track movement, and gather broad demographic information for aggregate use. IP addresses are not linked to personally identifiable information.


This web site contains links to other sites. Please be aware that Mondaq (or its affiliate sites) are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of these third party sites. This privacy statement applies solely to information collected by this Web site.

Surveys & Contests

From time-to-time our site requests information from users via surveys or contests. Participation in these surveys or contests is completely voluntary and the user therefore has a choice whether or not to disclose any information requested. Information requested may include contact information (such as name and delivery address), and demographic information (such as postcode, age level). Contact information will be used to notify the winners and award prizes. Survey information will be used for purposes of monitoring or improving the functionality of the site.


If a user elects to use our referral service for informing a friend about our site, we ask them for the friend’s name and email address. Mondaq stores this information and may contact the friend to invite them to register with Mondaq, but they will not be contacted more than once. The friend may contact Mondaq to request the removal of this information from our database.


This website takes every reasonable precaution to protect our users’ information. When users submit sensitive information via the website, your information is protected using firewalls and other security technology. If you have any questions about the security at our website, you can send an email to

Correcting/Updating Personal Information

If a user’s personally identifiable information changes (such as postcode), or if a user no longer desires our service, we will endeavour to provide a way to correct, update or remove that user’s personal data provided to us. This can usually be done at the “Your Profile” page or by sending an email to

Notification of Changes

If we decide to change our Terms & Conditions or Privacy Policy, we will post those changes on our site so our users are always aware of what information we collect, how we use it, and under what circumstances, if any, we disclose it. If at any point we decide to use personally identifiable information in a manner different from that stated at the time it was collected, we will notify users by way of an email. Users will have a choice as to whether or not we use their information in this different manner. We will use information in accordance with the privacy policy under which the information was collected.

How to contact Mondaq

You can contact us with comments or queries at

If for some reason you believe Mondaq Ltd. has not adhered to these principles, please notify us by e-mail at and we will use commercially reasonable efforts to determine and correct the problem promptly.