CTE Awareness Month: Brain Injury, Mood Changes, and Mental Health

Some of the hardest changes a brain injury brings are the ones no one can see. The forgotten name. The temper that arrives faster than it used to. The low mood that settles in and will not lift. For a former athlete, a veteran, or anyone who has taken too many hits over the years, these changes can feel like becoming a stranger in your own life. And the people who love you feel it too.

CTE Awareness Month is a chance to talk about that quieter part of brain injury, the part that lives in mood and mental health. This guide explains what chronic traumatic encephalopathy is, how brain injury can change mood, what signs to watch for, and how therapy can support the people and families living with it. We will be honest about what we can help with and what we cannot. You do not have to carry this fog alone.

What Is Chronic Traumatic Encephalopathy (CTE)?

Chronic traumatic encephalopathy, or CTE, is a brain disease linked to repeated head injuries over time, not one single concussion. It is diagnosed by medical specialists, and at present it can only be confirmed after death. Early signs can include changes in memory and thinking. Later, mood changes such as low mood, anxiety, and irritability can appear. Saalvio does not diagnose CTE.

According to Concussion Legacy Foundation Canada, CTE is a degenerative brain disease linked to repeated head injuries, including concussions and the smaller, non-concussive hits that add up over years. In CTE, a protein called tau (a protein that normally helps hold the structure of brain cells together) misfolds and spreads in a pattern unique to the disease. This is why CTE is not about one bad knock. It is about many, over a long time.

A concussion, by contrast, is a single brain injury, usually from one impact. CTE is associated with repeated head injuries rather than a single event. If you are searching for what is chronic traumatic encephalopathy because you played contact sports or served in a role with repeated head impacts, that question deserves a real medical answer from a clinician who can examine you, not a self-diagnosis from a website.

How Does Brain Injury Change Mood?

When the brain is injured, the systems that steady our emotions can work differently. People may feel low, anxious, or quick to anger in ways that feel unlike them. These mood changes are a result of the injury, not a character flaw. They are common, they are real, and talking to a therapist can help you cope with them.

This is the part families often miss at first. The brain injury and mental health connection is not a sign of weakness or a person “giving up.” It is wiring. When the brain’s emotional brakes are weaker, small frustrations spill into anger faster, sadness sits heavier, and worry can feel constant. Many people describe brain injury mood changes as feeling like a stranger in their own skin. Our clinical team often hears the same thing from clients and from the family members who love them.

These shifts can show up in adults of any background. In younger people, the awareness conversation matters too, though support for anyone under 18 belongs with services built for children and youth. More on that below.

What Are the Signs of CTE-Related Mood and Mental Health Changes?

Watch for changes that last and feel unlike the person you knew. These can include memory and concentration trouble, low mood that does not lift, anxiety that feels constant, increased irritability or anger, sleep problems, and pulling away from people. None of these confirm CTE on their own. They are reasons to talk to a medical clinician and to look after mental health.

Here is what people and families describe most often:

• Being more forgetful than usual, or losing the thread of a task that used to be simple.
• A constant, on-edge feeling that does not match what is actually happening.
• Irritability after head injury, where anger arrives faster and bigger than the moment calls for.
• Low mood (a heavy, flat sadness) that lingers for weeks.
• Sleep that will not come, or sleep that never feels like rest.
• Stepping back from friends and activities, sometimes out of fear of forgetting a name or losing your temper.

That last one matters. Pulling away can quietly make everything harder. As Canadian Mental Health Association BC explains, social isolation is tied to depression, anxiety, and cognitive decline, and meaningful connection is part of how people recover. If you notice yourself or someone you love withdrawing, that is a reason to reach toward help, not away from it.

These signs are for awareness, not self-diagnosis. CTE symptoms overlap with many other conditions, and only a qualified medical clinician can assess what is actually going on.

Why Is There Irritability or Anger After a Head Injury?

After a head injury, the brain’s brakes on strong feelings can be weaker. Small frustrations can spill into anger faster than before, and worry can feel constant. This is common, and it is the injury talking, not the person. Naming it, and getting support, makes it easier to live with for both the person and their family.

It helps to say this plainly, because so much shame hides in it. A person who snaps at the people they love is rarely choosing to. Head injury and anxiety, head injury depression, and sudden anger are not character failures. When families understand the change as medical rather than personal, the whole house can breathe a little easier, and the work of coping becomes a shared task instead of a private blame.

Can Therapy Help with Mood Changes After a Brain Injury?

Therapy does not treat the brain injury itself, and it cannot reverse or slow CTE. What it can do is support the low mood, anxiety, and irritability that often come alongside brain injury. Approaches like CBT help you notice and respond to hard thoughts and feelings. In Ontario, Saalvio’s registered psychotherapists and registered social workers offer this support online.

We want to be careful and honest here, because this is where it would be easy to overpromise. Saalvio works with regulated talk-therapy professionals. We do not employ physicians, psychiatrists, psychologists, or neurologists, and we do not diagnose or treat brain disease. What our clinical team can do is sit with the mental-health weight that travels alongside a brain injury, and help you find ways to carry it.

A few approaches that can support mood, anxiety, and depression:

• **Cognitive behavioural therapy (CBT)**, a structured talk therapy that helps you catch hard thoughts before they pull your mood down, and respond to them differently.
• **Dialectical behaviour therapy (DBT)**, which builds practical skills for steadying strong feelings and sudden spikes of anger.
• **Acceptance and commitment therapy (ACT)**, which helps you stop fighting what you cannot change and put your energy toward a life that still means something to you.
• **Somatic approaches** (body-based therapy), which help reconnect the mind and body when an injury has left them feeling far apart.

None of these is a cure, and none of them fixes the injury. They are tools for living better alongside it. Many people find that having a regular place to bring the hard days makes those days less frightening. If low mood is part of what you are carrying, our guide to depression may help, and if the constant on-edge feeling is the harder part, our anxiety resources speak to that.

If you are looking for therapy after brain injury in Ontario, or wider brain injury support in Ontario, this kind of mental-health support is available through online therapy in Ontario with Saalvio’s registered psychotherapists and registered social workers. For information about acquired brain injury itself, Brain Injury Canada is a trusted national resource. It reports that over 1.5 million Canadians live with an acquired brain injury, which is part of why this conversation matters to so many families.

How Can Families Support Someone with a Brain Injury?

Learn about the injury so you can see behaviour changes as medical, not personal. Be patient, keep daily routines steady, and look after your own mental health too. Many family members find their own therapy helpful. If someone under 18 is struggling, contact Kids Help Phone at 1-800-668-6868, or text CONNECT to 686868, for support built for children and youth.

CTE and brain injury do not happen to one person. They happen to a whole family. The partner who learns to read a hard day before it lands. The adult child who quietly takes on more. Supporting a family member with brain injury is real work, and it can wear you down in ways you do not notice until you are already running on empty.

A few things that help:

• **Learn the medical picture.** Understanding that the mood changes come from the injury makes patience easier to find.
• **Keep routines steady.** Predictable days lower stress for everyone in the home.
• **Protect your own wellbeing.** You cannot pour from an empty cup. Your own support is not a luxury, it is part of caring for them.

If you are the family member carrying this, you are allowed to get help for yourself. Saalvio’s therapy in Ontario is for adults, and a partner, parent, or adult child can be the client in their own right, working on the stress, grief, and exhaustion that caregiving brings. You do not have to wait until you are in crisis to deserve support.

Lifestyle Habits That Support Mood and Brain Health

Daily habits do not treat CTE, but they can support mood, sleep, and overall wellbeing while you live with a brain injury. Steady sleep, gentle movement, balanced meals, and keeping the mind gently active are reasonable, low-risk supports that many people find helpful alongside professional care, not instead of it.

• **Keep a steady sleep schedule.** Going to bed and waking at the same time helps the brain rest, and a tired brain copes with everything less well.
• **Move gently.** A short walk keeps the blood flowing without overdoing it. Check with a healthcare provider about what is safe for you.
• **Eat in a way that supports you.** Regular, balanced meals help steady energy and mood across the day.
• **Keep the mind gently active.** Reading, puzzles, or small daily tasks can help, paced so they do not become a source of frustration.

These are general wellbeing habits, not a treatment, and they work best in partnership with the medical and mental-health professionals in your corner.

Where to Start

You do not have to figure this out alone, and you do not have to decide everything tonight. If the mood changes that travel with a brain injury are wearing you or someone you love down, support is within reach.

In Ontario, Saalvio offers online therapy delivered by registered psychotherapists and registered social workers who can support the low mood, anxiety, and irritability that often come alongside brain injury. Before you book anything, you can message a therapist before you book and ask whatever you need to ask: whether they have worked with someone in your situation, whether their approach fits, whether they will understand what your family is going through. There is no cost and no commitment. Messaging is not therapy by text and it is not crisis support, just a conversation to help you decide. Every Canadian’s first therapy session with a Saalvio clinician is free, so choosing to try therapy is not a financial gamble on whether the fit will be right.

The Saalvio mobile app, available across Canada and North America on the Apple App Store and Google Play, carries the full self-help platform, including mood tracking, a private journal, guided practices, sleep tools, and structured self-assessments you can fill out at your own pace. Therapy sessions with a Saalvio clinician are offered in Ontario today, on both the app and the web client portal at client.saalvio.com. If you are not sure where to begin, our guide on how to find a therapist walks through it, and our crisis resources page is there if today is a hard day.

For more on acquired brain injury and national support, Brain Injury Canada and the Government of Canada mental health information page are reliable starting points.

Frequently Asked Questions

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Saalvio Editorial Team

Clinically reviewed by Usman Khan, RP (CRPO #13456)