What Is Paranoia?

Paranoia involves excessive suspicion or mistrust of other people.

Someone may begin believing:

People are talking about them
Others are lying to them
Family members are hiding things
Friends have bad intentions
Professionals cannot be trusted

These thoughts often feel completely real to the person experiencing them.

Why Can Brain Injury Cause These Symptoms?

Distorted thinking refers to patterns of thinking that lead someone to interpret situations inaccurately.

Examples include:

Jumping to Conclusions

Reaching a conclusion before all the facts are known.

Assuming the Worst

Believing the worst possible explanation is the correct one.

Mind Reading

Believing they know what others are thinking.

Personalising

Assuming events or comments are directed at them when they are not.

Black and White Thinking

Viewing situations as all good or all bad.

Why Might This Be More Common in Probable CTE?

Families affected by probable CTE sometimes report:

Increased suspicion
Mistrust
Personality changes
Emotional dysregulation
Impulsive thinking

Researchers are still working to understand these changes, but difficulties with emotional regulation, judgement, and behaviour may contribute.

Not everyone with probable CTE experiences these symptoms.

Why Can This Happen After Brain Injury?

Several factors may contribute.

Changes in Brain Function

Brain injuries can affect areas involved in:

Judgement
Reasoning
Emotional regulation
Social understanding
Impulse control

These changes may make it harder to accurately interpret situations and people's intentions.

Memory Difficulties

When someone struggles to remember events clearly, the brain sometimes tries to fill in the gaps.

Unfortunately, those gaps may be filled with assumptions rather than facts.

Anxiety and Hypervigilance

Many people living with brain injury or probable CTE experience increased anxiety.

When the brain feels constantly on alert, it may begin looking for threats even when none exist.

Trauma

Many individuals with brain injury have also experienced traumatic events.

Examples include:

Military service
Domestic abuse
Serious accidents
Violence

Trauma can make the brain more likely to expect danger or betrayal.

Fatigue

Families often notice these symptoms become worse when their loved one is:

Exhausted
Stressed
Overwhelmed
Sleep deprived

Fatigue reduces the brain's ability to challenge unhelpful thoughts.

What It Feels Like for Your Loved One

One of the most important things to understand is this:

The fear is real.

Even if the belief itself is inaccurate, the emotional distress often isn't.

Your loved one may genuinely feel:

Threatened
Betrayed
Rejected
Unsafe

Trying to understand this distinction can help reduce conflict.

Why Logic Often Doesn't Work

Families frequently respond by presenting evidence.

For example:

"That's not true."

"You know I wouldn't do that."

"Look at the facts."

While understandable, logic alone often does not resolve the situation.

This is because the emotional part of the brain may be driving the belief more strongly than the rational part.

The more someone feels threatened, the harder it can become for them to accept alternative explanations.

Common Mistakes Families Make

Most families make these mistakes because they are trying to help.

Arguing About the Facts

Long debates often lead to:

More frustration
More defensiveness
More conflict

rather than resolution.

Taking It Personally

This is incredibly difficult when accusations are directed at you.

Remember:

The suspicion is often a symptom.

It is not necessarily a reflection of how your loved one truly feels about you.

Constant Reassurance

While occasional reassurance can help, repeatedly trying to "prove" something may unintentionally reinforce the cycle.

Dismissing Their Feelings

Saying:

"You're being ridiculous."

"That's nonsense."

often increases distress and damages trust.

How to Support Someone

Stay Calm

Your calmness can help regulate the situation.

Responding with anger usually increases tension.

Acknowledge the Emotion

Instead of focusing only on whether the belief is true, focus on the feeling underneath it.

For example:

"I can see this is really upsetting you."

"That sounds frightening."

This validates their emotions without agreeing with the belief.

Avoid Direct Confrontation

Instead of saying:

"That's not true."

Try:

"I can see why you might feel that way."

"I see things a little differently."

This often reduces defensiveness.

Gently Encourage Alternative Explanations

Ask questions such as:

"Could there be another explanation?"

"What evidence do we have for that?"

The goal is curiosity rather than argument.

Recognise Triggers

Many families notice symptoms worsen during periods of:

Fatigue
Stress
Pain
Illness
Sensory overload

Identifying patterns can be helpful.

Encourage Professional Support

If symptoms are affecting:

Relationships
Wellbeing
Daily life

professional support may be beneficial.

Protect Your Own Wellbeing

This symptom can be emotionally exhausting.

Being repeatedly accused, mistrusted, or questioned can take a toll.

Remember:

You are allowed to:

Feel hurt
Take breaks
Seek support
Set boundaries

Supporting someone does not mean sacrificing your own mental health.

When Behaviour Becomes Unsafe

Most suspicious thinking does not lead to dangerous behaviour.

However, seek professional help if paranoia is becoming:

Severe
Escalating
Aggressive
Threatening

Safety should always come first.

A Message for Families

If you are living with this symptom, please know:

You are not alone.

Many families affected by brain injury and probable CTE experience similar challenges.

It can be exhausting.

It can be heartbreaking.

And sometimes it can feel impossible to know what the right thing to do is.

Remember that you are not responsible for fixing every thought or solving every problem.

Sometimes your role is simply to provide support while encouraging professional help when needed.

What Not to Forget

Behind the suspicious thoughts is usually someone who is frightened, confused, overwhelmed, or struggling.

Many people experiencing paranoia feel isolated and distressed.

Approaching them with empathy often works better than approaching them with confrontation.

A Message of Hope

Paranoia and distorted thinking can place enormous strain on individuals and families.

But understanding what is happening is often the first step towards managing it.

Many people learn to recognise triggers, challenge unhelpful thought patterns, and develop coping strategies over time.

Families who understand the symptom often find they are better able to respond with compassion rather than conflict.

Progress may not always be quick.

But support, understanding, and healthy boundaries can make a meaningful difference.

Key Takeaways

Paranoia and distorted thinking can occur after brain injury and in some people with probable CTE.
These symptoms may be influenced by changes in brain function, memory problems, anxiety, trauma, and fatigue.
The emotional distress behind the thoughts is often very real.
Logic alone may not resolve suspicious beliefs.
Validating feelings is often more effective than arguing about facts.
Families should support their loved one while maintaining healthy boundaries.
Professional support may be helpful when symptoms become distressing or disruptive.
You do not have to face these challenges alone.

Continue Exploring

Living With Someone Who Has Probable CTE
Emotional & Personality Changes
How to Communicate With Someone Who Has a Brain Injury
When Behaviour Becomes Unsafe
Caregiver Burnout
Family Support Group

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