This page explains why these symptoms happen, what they look like, how they relate to post‑traumatic amnesia (PTA), fatigue, medication, and the risk of epilepsy, and how families can support recovery safely.

1. Why Delusions and Psychosis Happen After a Brain Injury

Delusions and psychosis after trauma are usually caused by:
• injury to the frontal and temporal lobes
• disrupted communication between memory, emotion and reasoning centres
• post‑traumatic amnesia (PTA)
• severe confusion
• sleep disruption
• medication side‑effects
• infection or metabolic disturbance
• seizures or post‑ictal confusion
• overwhelming fatigue
• sensory overload

These symptoms are neurological, not psychiatric in the traditional sense. They do not mean the person has developed a lifelong mental health condition.

2. What Delusions Look Like

Delusions are fixed beliefs that feel completely real to the injured person, even when they are not accurate.
Common examples include believing:
• staff or family are trying to harm them
• they are somewhere else (home, work, school)
• they must leave urgently
• people are imposters
• objects have special meaning
• someone is watching or following them
• they are in danger
• they are being kept against their will

These beliefs arise from confusion, memory gaps, fear, and disrupted brain networks — not from personality or intention.

3. What Psychosis Look Like

Psychosis after brain injury may include:
• hearing or seeing things that are not there
• misinterpreting sounds or movements
• believing events have hidden meanings
• intense fear or agitation
• pacing, restlessness or trying to leave
• talking to unseen people
• sudden emotional swings
• difficulty distinguishing imagination from reality

Psychosis after trauma is usually short‑lived, especially when linked to PTA, infection, medication or seizures.

4. Confabulation: Filling in the Gaps

Confabulation is when the brain “fills in” missing memories with stories that feel true to the person.
Examples include:
• describing events that didn’t happen
• giving explanations that sound plausible but are inaccurate
• mixing real memories with imagined details
• confidently recalling things that are not correct

Confabulation is not lying. It is a neurological response to memory gaps. It is extremely common in PTA and early recovery.

5. Post‑Traumatic Amnesia (PTA) and Delusions

PTA is one of the strongest predictors of delusions and confabulation. During PTA, people may:
• not recognise where they are
• not recognise familiar people
• misinterpret conversations
• become frightened or agitated
• repeat questions
• forget what has just happened
• behave out of character
• say things that don’t make sense
• wandering or try to leave

Delusions during PTA are normal and usually resolve as orientation returns.

6. Fatigue, Overload and Emotional Distress

Fatigue after brain injury is profound. When exhausted, people may:
• misinterpret situations
• become paranoid or fearful
• lose emotional control
• become overwhelmed by noise or movement
• struggle to process information
• react impulsively

Fatigue can make delusions feel stronger or more distressing.

7. Medication and Delirium

Some medications can contribute to confusion or delusional thinking, especially:
• strong painkillers
• sedatives
• anti‑seizure medication
• sleep medication
• steroids

Hospital delirium can also cause:
• hallucinations
• agitation
• disorientation
• fear
• misinterpretation

These symptoms often settle when medication is adjusted or delirium resolves.

8. Seizures and Post‑Ictal Confusion

The risk of epilepsy is higher after a brain injury. Seizures can cause:
• sudden confusion
• agitation
• fear
• hallucinations
• disorientation
• temporary psychosis
• memory gaps
• emotional instability

Post‑ictal confusion (the period after a seizure) can last minutes or hours and may include delusional thinking. Any new seizure activity should be discussed with medical professionals.

9. How Neuropsychology Helps

Neuropsychologists support recovery by:
• assessing memory, orientation and reasoning
• explaining why delusions are happening
• helping families respond calmly
• reducing triggers
• supporting emotional regulation
• creating structured routines
• helping rebuild insight and awareness

They are essential in the rehabilitation of cognitive and behavioural symptoms.

10. How Neuropsychiatry Helps

Neuropsychiatrists specialise in psychiatric symptoms caused by neurological injury. They help with:
• delusions
• hallucinations
• agitation
• severe anxiety
• emotional instability
• impulsivity
• risk management
• medication
• sleep disturbance
• post‑ictal psychosis

They also support families when symptoms affect safety or decision‑making.

11. Safety and Risk Management
Delusions can sometimes lead to:
• wandering
• attempts to leave hospital
• fear‑based behaviour
• impulsive decisions
• vulnerability
• conflict with staff or family

Risk management may involve:
• supervision
• calm redirection
• reducing sensory overload
• medication
• structured routines
• environmental adjustments
• involvement of the Mental Capacity Act
• support from the Court of Protection (in rare cases)

These measures protect the person until confusion settles.

12. Supporting Someone With Delusions
Families can help by:
• staying calm
• offering reassurance
• avoiding arguments about the delusion
• gently redirecting the conversation
• reducing noise and stress
• keeping routines predictable
• using short, simple explanations
• giving extra time to process information
• avoiding confrontation during fatigue
• taking breaks when needed

Delusions feel real to the injured person. Kindness and patience make a huge difference.

Key Message
Delusions, psychosis and confabulation after a brain injury are frightening but common, understandable, and often temporary. They are neurological symptoms, not signs of permanent mental illness. With specialist support, structure, and time, most people regain clarity, stability and emotional balance.

If you are reading this page and have questions, you are welcome to call or message me on 07584131931/Email:rose@seriousinjurylawyer.online