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A grid of illustrated characters representing people experiencing different forms of acquired neurodivergence. Each square shows a person with a visual cue or facial expression suggesting confusion, fatigue, worry, or frustration. Illustrations include symbols like a head bandage, a bottle, a swirl indicating brain fog, a split face for dissociation, and thought bubbles, representing experiences like brain injury, alcohol use, cognitive dysfunction, or emotional regulation challenges.
April 1, 2025
• Aktualisiert am

What is acquired neurodivergence?

A guide to brain changes, trauma, and the full spectrum of neurodiversity

No items found.

Most people think of neurodivergence as something you’re born with. But neurodivergence can also be acquired over time.

Through trauma, illness, injury, or mental health changes, some people develop cognitive, sensory, or emotional differences later in life. This is known as acquired neurodivergence.

Neurodivergence is often used to describe lifelong conditions like Autism, ADHD, and learning differences, but that doesn’t reflect the full picture.

What is acquired neurodivergence?

Acquired neurodivergence refers to changes in how a person’s brain functions after birth, often as a result of trauma, illness, injury, or other neurological events. It might affect memory, attention, emotional regulation, processing speed, executive functioning, or sensory experiences.

For example, someone who experiences a traumatic brain injury (TBI) might develop executive functioning difficulties that resemble ADHD. A person living with post-traumatic stress disorder (PTSD) might experience sensory sensitivities, emotional dysregulation, or time blindness. A chronic illness like long COVID or lupus might affect memory and focus in ways that make daily life feel different than before.

What conditions can lead to acquired neurodivergence?

There’s no definitive list, but these conditions are commonly associated with changes in cognitive, emotional, or sensory functioning:

Traumatic brain injury (TBI)

Physical damage to the brain caused by impact or force often leading to challenges with memory, concentration, emotional regulation, and executive functioning.

Stroke or neurological illness

Interruptions in blood flow or disease in the brain can cause speech, motor, cognitive, and processing difficulties.

Post-traumatic stress disorder (PTSD)

A mental health condition triggered by traumatic events, often involving hypervigilance, flashbacks, dissociation, and difficulties with memory or focus.

Obsessive-compulsive disorder (OCD)

A condition involving unwanted intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that may interfere with daily functioning.

Epilepsy and seizure-related cognitive changes

Seizures can impact memory, processing speed, executive function, and mood regulation.

Psychosis or schizophrenia spectrum conditions

Involve altered perception, disorganized thinking, and sensory differences that can lead to challenges with communication, memory, and attention.

Alcohol-related brain damage (ARBD)

Long-term alcohol misuse can lead to structural brain changes, often affecting judgment, memory, planning, and coordination.

Lupus and autoimmune-related brain fog

Inflammation in the nervous system from autoimmune disorders like lupus can impair concentration, processing speed, and emotional regulation.

Long COVID cognitive dysfunction

Many people report ongoing difficulties with memory, attention, and fatigue following COVID-19 infection.

Early-onset dementias

Conditions like frontotemporal dementia can begin before age 65 and may impact behavior, judgment, and communication skills.

These conditions may affect executive functioning, sensory processing, language use, memory, or emotional regulation – often in ways that overlap with congenital neurodivergent experiences like ADHD and Autism.

Is it still neurodivergence if it’s not lifelong?

Yes. Neurodivergence doesn’t have to be present from birth. It can also emerge over time. That includes:

  • Temporary or fluctuating states (like post-viral brain fog)
  • Trauma-related changes in processing or memory
  • Later-life neurological conditions

Whether it lasts for months or years, if your brain works differently than it did before, and that difference impacts your everyday functioning, it’s valid to describe it as neurodivergent.

This also includes people who experience both acquired and congenital forms. For instance, someone with Autism might develop PTSD, or someone with ADHD might experience long COVID brain fog. Neurodivergent traits can overlap, interact, or shift over time.

How to understand and meet your own needs

If you’re experiencing cognitive or sensory changes after trauma, illness, or injury, it can be hard to know where to start. Here are some things to try:

  • Track what’s changed: Write down what feels harder now (e.g. memory, focus, energy, emotional regulation).
  • Identify patterns: Notice when symptoms are better or worse. What helps? What drains you?
  • Experiment with supports: Try external memory tools, visual routines, or time buffers. Explore apps like Tiimo for visual structure.

Planung, die zu deinem Gehirn passt

Tiimo wurde von neurodivergenten Menschen entwickelt. Mit KI-Planung, Check-ins und klaren Zeitplänen, die dir helfen, fokussiert und entspannt durch den Tag zu kommen.

Apple logo
Tiimo im App Store holen
Google logo
Tiimo bei Google Play holen
  • Name your needs: Give yourself permission to say, “I need more time,” or “I need quiet to concentrate.” You don’t need a diagnosis to deserve that.
  • Connect with others: Whether online or in person, community can be powerful. Others have walked this path, too.

How to support someone with acquired neurodivergence

The best way to support someone is to ask them what they need. No two people experience acquired neurodivergence in the same way. That said, some commonly helpful practices include:

  • Offer choices and flexibility rather than fixed expectations
  • Use clear, written communication (e.g. follow-up emails, shared notes)
  • Reduce sensory overload (soft lighting, headphones, options to step away)
  • Be patient with processing time or memory gaps
  • Validate rather than fix
  • Avoid assumptions about what someone can or can’t do

If you’re not sure? Just ask. Try: “What would help you feel more supported today?” or “Would you like me to do anything differently?”

Support doesn’t have to be perfect. It just has to be thoughtful.

The bottom line

Neurodivergence isn’t always something you’re born with. Sometimes, it develops through what life throws at you.

If your brain has changed, if your focus, memory, or emotional regulation feels different than it used to – that’s real. And support is not just for those with early diagnoses. It’s for everyone navigating a world that wasn’t built with their brain in mind.

Acquired neurodivergence is part of the neurodiversity spectrum. It deserves to be understood, supported and included.

Share this with a friend navigating life after brain injury, illness, or trauma. It might give them the words they didn’t know they needed.

Über die Autor*in

Beaux Miebach

Beaux ist Tiimos Lead für Inklusion und Zugehörigkeit, eine queere, neurodivergente Strateg*in, die inklusive Systeme gestaltet, bei denen Zugänglichkeit und Intersektionalität im Mittelpunkt stehen.

Mehr erfahren
April 1, 2025
• Updated:

What is acquired neurodivergence?

A guide to brain changes, trauma, and the full spectrum of neurodiversity

No items found.

Most people think of neurodivergence as something you’re born with. But neurodivergence can also be acquired over time.

Through trauma, illness, injury, or mental health changes, some people develop cognitive, sensory, or emotional differences later in life. This is known as acquired neurodivergence.

Neurodivergence is often used to describe lifelong conditions like Autism, ADHD, and learning differences, but that doesn’t reflect the full picture.

What is acquired neurodivergence?

Acquired neurodivergence refers to changes in how a person’s brain functions after birth, often as a result of trauma, illness, injury, or other neurological events. It might affect memory, attention, emotional regulation, processing speed, executive functioning, or sensory experiences.

For example, someone who experiences a traumatic brain injury (TBI) might develop executive functioning difficulties that resemble ADHD. A person living with post-traumatic stress disorder (PTSD) might experience sensory sensitivities, emotional dysregulation, or time blindness. A chronic illness like long COVID or lupus might affect memory and focus in ways that make daily life feel different than before.

What conditions can lead to acquired neurodivergence?

There’s no definitive list, but these conditions are commonly associated with changes in cognitive, emotional, or sensory functioning:

Traumatic brain injury (TBI)

Physical damage to the brain caused by impact or force often leading to challenges with memory, concentration, emotional regulation, and executive functioning.

Stroke or neurological illness

Interruptions in blood flow or disease in the brain can cause speech, motor, cognitive, and processing difficulties.

Post-traumatic stress disorder (PTSD)

A mental health condition triggered by traumatic events, often involving hypervigilance, flashbacks, dissociation, and difficulties with memory or focus.

Obsessive-compulsive disorder (OCD)

A condition involving unwanted intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that may interfere with daily functioning.

Epilepsy and seizure-related cognitive changes

Seizures can impact memory, processing speed, executive function, and mood regulation.

Psychosis or schizophrenia spectrum conditions

Involve altered perception, disorganized thinking, and sensory differences that can lead to challenges with communication, memory, and attention.

Alcohol-related brain damage (ARBD)

Long-term alcohol misuse can lead to structural brain changes, often affecting judgment, memory, planning, and coordination.

Lupus and autoimmune-related brain fog

Inflammation in the nervous system from autoimmune disorders like lupus can impair concentration, processing speed, and emotional regulation.

Long COVID cognitive dysfunction

Many people report ongoing difficulties with memory, attention, and fatigue following COVID-19 infection.

Early-onset dementias

Conditions like frontotemporal dementia can begin before age 65 and may impact behavior, judgment, and communication skills.

These conditions may affect executive functioning, sensory processing, language use, memory, or emotional regulation – often in ways that overlap with congenital neurodivergent experiences like ADHD and Autism.

Is it still neurodivergence if it’s not lifelong?

Yes. Neurodivergence doesn’t have to be present from birth. It can also emerge over time. That includes:

  • Temporary or fluctuating states (like post-viral brain fog)
  • Trauma-related changes in processing or memory
  • Later-life neurological conditions

Whether it lasts for months or years, if your brain works differently than it did before, and that difference impacts your everyday functioning, it’s valid to describe it as neurodivergent.

This also includes people who experience both acquired and congenital forms. For instance, someone with Autism might develop PTSD, or someone with ADHD might experience long COVID brain fog. Neurodivergent traits can overlap, interact, or shift over time.

How to understand and meet your own needs

If you’re experiencing cognitive or sensory changes after trauma, illness, or injury, it can be hard to know where to start. Here are some things to try:

  • Track what’s changed: Write down what feels harder now (e.g. memory, focus, energy, emotional regulation).
  • Identify patterns: Notice when symptoms are better or worse. What helps? What drains you?
  • Experiment with supports: Try external memory tools, visual routines, or time buffers. Explore apps like Tiimo for visual structure.

Planung, die zu deinem Gehirn passt

Tiimo wurde von neurodivergenten Menschen entwickelt. Mit KI-Planung, Check-ins und klaren Zeitplänen, die dir helfen, fokussiert und entspannt durch den Tag zu kommen.

Apple logo
Tiimo im App Store holen
Google logo
Tiimo bei Google Play holen
  • Name your needs: Give yourself permission to say, “I need more time,” or “I need quiet to concentrate.” You don’t need a diagnosis to deserve that.
  • Connect with others: Whether online or in person, community can be powerful. Others have walked this path, too.

How to support someone with acquired neurodivergence

The best way to support someone is to ask them what they need. No two people experience acquired neurodivergence in the same way. That said, some commonly helpful practices include:

  • Offer choices and flexibility rather than fixed expectations
  • Use clear, written communication (e.g. follow-up emails, shared notes)
  • Reduce sensory overload (soft lighting, headphones, options to step away)
  • Be patient with processing time or memory gaps
  • Validate rather than fix
  • Avoid assumptions about what someone can or can’t do

If you’re not sure? Just ask. Try: “What would help you feel more supported today?” or “Would you like me to do anything differently?”

Support doesn’t have to be perfect. It just has to be thoughtful.

The bottom line

Neurodivergence isn’t always something you’re born with. Sometimes, it develops through what life throws at you.

If your brain has changed, if your focus, memory, or emotional regulation feels different than it used to – that’s real. And support is not just for those with early diagnoses. It’s for everyone navigating a world that wasn’t built with their brain in mind.

Acquired neurodivergence is part of the neurodiversity spectrum. It deserves to be understood, supported and included.

Share this with a friend navigating life after brain injury, illness, or trauma. It might give them the words they didn’t know they needed.

About the author

Beaux Miebach

Beaux ist Tiimos Lead für Inklusion und Zugehörigkeit, eine queere, neurodivergente Strateg*in, die inklusive Systeme gestaltet, bei denen Zugänglichkeit und Intersektionalität im Mittelpunkt stehen.

More from the author
What is acquired neurodivergence?
April 1, 2025

What is acquired neurodivergence?

A guide to brain changes, trauma, and the full spectrum of neurodiversity

Tiimo coach of the month icon

Georgina Shute

Gina is an ADHD coach and founder of KindTwo, helping overwhelmed leaders reclaim time and build neuroinclusive systems that actually work.

No items found.

Most people think of neurodivergence as something you’re born with. But neurodivergence can also be acquired over time.

Through trauma, illness, injury, or mental health changes, some people develop cognitive, sensory, or emotional differences later in life. This is known as acquired neurodivergence.

Neurodivergence is often used to describe lifelong conditions like Autism, ADHD, and learning differences, but that doesn’t reflect the full picture.

What is acquired neurodivergence?

Acquired neurodivergence refers to changes in how a person’s brain functions after birth, often as a result of trauma, illness, injury, or other neurological events. It might affect memory, attention, emotional regulation, processing speed, executive functioning, or sensory experiences.

For example, someone who experiences a traumatic brain injury (TBI) might develop executive functioning difficulties that resemble ADHD. A person living with post-traumatic stress disorder (PTSD) might experience sensory sensitivities, emotional dysregulation, or time blindness. A chronic illness like long COVID or lupus might affect memory and focus in ways that make daily life feel different than before.

What conditions can lead to acquired neurodivergence?

There’s no definitive list, but these conditions are commonly associated with changes in cognitive, emotional, or sensory functioning:

Traumatic brain injury (TBI)

Physical damage to the brain caused by impact or force often leading to challenges with memory, concentration, emotional regulation, and executive functioning.

Stroke or neurological illness

Interruptions in blood flow or disease in the brain can cause speech, motor, cognitive, and processing difficulties.

Post-traumatic stress disorder (PTSD)

A mental health condition triggered by traumatic events, often involving hypervigilance, flashbacks, dissociation, and difficulties with memory or focus.

Obsessive-compulsive disorder (OCD)

A condition involving unwanted intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that may interfere with daily functioning.

Epilepsy and seizure-related cognitive changes

Seizures can impact memory, processing speed, executive function, and mood regulation.

Psychosis or schizophrenia spectrum conditions

Involve altered perception, disorganized thinking, and sensory differences that can lead to challenges with communication, memory, and attention.

Alcohol-related brain damage (ARBD)

Long-term alcohol misuse can lead to structural brain changes, often affecting judgment, memory, planning, and coordination.

Lupus and autoimmune-related brain fog

Inflammation in the nervous system from autoimmune disorders like lupus can impair concentration, processing speed, and emotional regulation.

Long COVID cognitive dysfunction

Many people report ongoing difficulties with memory, attention, and fatigue following COVID-19 infection.

Early-onset dementias

Conditions like frontotemporal dementia can begin before age 65 and may impact behavior, judgment, and communication skills.

These conditions may affect executive functioning, sensory processing, language use, memory, or emotional regulation – often in ways that overlap with congenital neurodivergent experiences like ADHD and Autism.

Is it still neurodivergence if it’s not lifelong?

Yes. Neurodivergence doesn’t have to be present from birth. It can also emerge over time. That includes:

  • Temporary or fluctuating states (like post-viral brain fog)
  • Trauma-related changes in processing or memory
  • Later-life neurological conditions

Whether it lasts for months or years, if your brain works differently than it did before, and that difference impacts your everyday functioning, it’s valid to describe it as neurodivergent.

This also includes people who experience both acquired and congenital forms. For instance, someone with Autism might develop PTSD, or someone with ADHD might experience long COVID brain fog. Neurodivergent traits can overlap, interact, or shift over time.

How to understand and meet your own needs

If you’re experiencing cognitive or sensory changes after trauma, illness, or injury, it can be hard to know where to start. Here are some things to try:

  • Track what’s changed: Write down what feels harder now (e.g. memory, focus, energy, emotional regulation).
  • Identify patterns: Notice when symptoms are better or worse. What helps? What drains you?
  • Experiment with supports: Try external memory tools, visual routines, or time buffers. Explore apps like Tiimo for visual structure.

  • Name your needs: Give yourself permission to say, “I need more time,” or “I need quiet to concentrate.” You don’t need a diagnosis to deserve that.
  • Connect with others: Whether online or in person, community can be powerful. Others have walked this path, too.

How to support someone with acquired neurodivergence

The best way to support someone is to ask them what they need. No two people experience acquired neurodivergence in the same way. That said, some commonly helpful practices include:

  • Offer choices and flexibility rather than fixed expectations
  • Use clear, written communication (e.g. follow-up emails, shared notes)
  • Reduce sensory overload (soft lighting, headphones, options to step away)
  • Be patient with processing time or memory gaps
  • Validate rather than fix
  • Avoid assumptions about what someone can or can’t do

If you’re not sure? Just ask. Try: “What would help you feel more supported today?” or “Would you like me to do anything differently?”

Support doesn’t have to be perfect. It just has to be thoughtful.

The bottom line

Neurodivergence isn’t always something you’re born with. Sometimes, it develops through what life throws at you.

If your brain has changed, if your focus, memory, or emotional regulation feels different than it used to – that’s real. And support is not just for those with early diagnoses. It’s for everyone navigating a world that wasn’t built with their brain in mind.

Acquired neurodivergence is part of the neurodiversity spectrum. It deserves to be understood, supported and included.

Share this with a friend navigating life after brain injury, illness, or trauma. It might give them the words they didn’t know they needed.

Illustration of two hands coming together to form a heart shape.

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