Introduction to ADHD
Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental condition that affects the regulation of attention, behaviour, motivation, emotions and executive functioning.
The brain does not manage these functions through one isolated area.
Instead, it uses interconnected brain networks, with a number brain regions working together and communicating across networks. See image above.
Different brain regions contribute to different functions, while working together and communicating through interconnected brain networks.
Dopamine and noradrenaline are chemical messengers that help regulate communication within these brain networks.
Different brain regions use these neurotransmitters to different degrees. Brain systems involved in executive control, attention, working memory, motivation, reward and behavioural inhibition are particularly influenced by efficient dopamine and noradrenaline signalling.
Dopamine signalling is influenced by experiences involving:
❑ Novelty ❑ Curiosity. ❑ Interest. ❑ Anticipation of reward. ❑ Achievement. ❑ Immediate feedback. ❑ Progress towards a goal. ❑ Learning something new. ❑ Urgency or challenge.
Dopamine and Noradrenaline in ADHD
ADHD is not simply caused by a constant lack of dopamine.
Research suggests that ADHD involves differences in the regulation of dopamine and noradrenaline signalling within brain networks responsible for:
❑ Planning and organisation
❑ Attention and working memory
❑ Motivation and reward
❑ Impulse control
❑ Task initiation and completion
❑ Emotional regulation
These differences can affect how efficiently the brain activates, coordinates and maintains the processes required for goal-directed behaviour.
Self Regulation
Less efficient functioning within the brain networks responsible for executive and inhibitory control can make it harder to pause, consider consequences and suppress an immediate response.
This may contribute to:
❑ Impulsive speech
❑ Acting before thinking
❑ Rapid decision-making
❑ Difficulty resisting distractions
❑ Strong or immediate emotional reactions
These difficulties may become more noticeable when a situation is highly stimulating, frustrating, rewarding or emotionally significant.
Regulation of Attention
ADHD commonly affects the regulation of attention, particularly when tasks are repetitive, provide little immediate reward, or are insufficiently stimulating.
Attention may become easier to engage and sustain when an activity provides:
❑ Interest
❑ Novelty
❑ Challenge
❑ Urgency
❑ Personal relevance
❑ Emotional significance
❑ Immediate reward
These differences can make it harder to activate and sustain attention based on the future importance of a task alone.
A person with ADHD may therefore fully understand that something is important and genuinely intend to do it, while still experiencing significant difficulty initiating, sustaining attention and following the task through to completion.
Executive Functioning
Interest, Motivation & Importance
Attention, Motivation and Dopamine in ADHD
ADHD is not caused by a simple lack of dopamine. Instead, research suggests that dopamine and noradrenaline signalling is regulated differently in ADHD, affecting brain networks involved in attention, motivation, reward and executive functioning.
Dopamine helps the brain decide:
❑ What is important.
❑ What deserves attention.
❑ What is rewarding.
❑ What is worth the effort.
❑ When to initiate action.
❑ Whether to keep going.
Dopamine signalling influenced by experiences involving:
❑ Novelty.
❑ Curiosity.
❑ Interest.
❑ Anticipation of reward.
❑ Achievement.
❑ Immediate feedback.
❑ Progress towards a goal.
❑ Learning something new.
❑ Urgency or challenge.
Interest-based rather than importance-based.
The ADHD brain can engage very strongly when something is:
❑ Interesting.
❑ Novel.
❑ Challenging.
❑ Urgent.
❑ Emotionally meaningful.
❑ Immediately rewarding.
In contrast, tasks that are routine, repetitive, administrative or have a delayed reward can be much harder to start and sustain.
A person may therefore fully understand that something is important and genuinely intend to do it, but still struggle to activate and maintain the attention and effort required to complete it.
Why Does This Happen?
Dopamine and noradrenaline help regulate communication within brain networks responsible for:
❑ Attention.
❑ Motivation.
❑ Working memory.
❑ Planning and organisation.
❑ Impulse control.
❑ Emotional regulation.
❑ Sustained mental effort.
❑ Goal-directed behaviour.
When this signalling is less efficiently regulated, it can be harder for the brain to consistently activate, prioritise and sustain behaviour towards a future goal.
This can contribute to difficulties with:
❑ Starting tasks.
❑ Sustaining attention.
❑ Maintaining motivation.
❑ Planning and organising.
❑ Holding information in working memory.
❑ Resisting distractions and impulses.
❑ Persisting with repetitive or low-interest tasks.
❑ Working towards rewards that are delayed.
The ADHD Reward System
ADHD is also associated with differences in how the brain responds to immediate versus delayed rewards.
Immediate rewards and feedback can have a stronger influence on behaviour, while rewards that are distant or delayed may provide a weaker motivational signal.
This helps explain why urgency, novelty, challenge and immediate feedback can make it much easier to become engaged.
Importance Does Not Always Create Activation
For many people with ADHD, knowing that a task is important is not always enough to activate attention and motivation.
A routine task may be extremely important but provide little immediate stimulation or reward. In contrast, an interesting or urgent task may rapidly engage attention and motivation.
This is why ADHD can sometimes be described as an interest-based rather than purely importance-based pattern of attention and motivation.
It does not mean that the person does not care or lacks motivation. Rather, the brain systems responsible for turning intention into sustained action are regulated differently.
Many people with ADHD therefore describe the difficulty as:
“I know what I need to do. The difficulty is getting my brain to start doing it—and keep doing it.”
Self-Motivation
Self-motivation refers to the ability to start, sustain, and complete tasks, particularly when they are routine, repetitive, low in interest, mentally effortful, or do not provide an immediate reward.
In ADHD, motivation is often more strongly influenced by immediate reward and stimulation than by the future importance of a task. A person may fully understand that something is important and genuinely intend to do it, yet still experience significant difficulty activating themselves to begin or sustaining effort through to completion.
People with ADHD may experience:
- Procrastination with routine, repetitive, or low-interest tasks.
- Difficulty starting tasks that do not provide an immediate or meaningful reward.
- Difficulty sustaining effort during lengthy or mentally demanding tasks that are not inherently engaging.
- Difficulty maintaining motivation once the initial interest or novelty wears off.
- Starting multiple projects but struggling to bring them through to completion.
- Difficulty working consistently towards long-term goals when the reward is distant or delayed.
- Inconsistent productivity — being highly productive in some situations but unable to get started in others.
- A sudden increase in motivation and productivity when a deadline becomes urgent.
- Strong engagement with activities that are interesting, novel, challenging, or stimulating.
- Reliance on deadlines, external accountability, feedback, or immediate consequences to initiate and complete tasks.
What Activates Motivation?
For many people with ADHD, attention and task engagement can be more readily activated by:
Interest • Novelty • Urgency • Immediate Reward • External Accountability • Immediate Consequences
This can create a characteristic pattern of inconsistent performance. A person may demonstrate exceptional concentration, persistence, and productivity when something is interesting, stimulating, rewarding, or urgent, while experiencing substantial difficulty initiating or sustaining routine, repetitive, or administratively demanding tasks.
Immediate vs Delayed Reward
In ADHD, events that are rewarding or stimulating now can exert a stronger influence on behaviour than outcomes that are important but further into the future.
This can look like:
- Knowing a task matters but still being unable to begin it.
- Choosing immediate relief or gratification over a longer-term benefit.
- Losing motivation when the reward is delayed.
- Becoming highly productive once a deadline creates urgency.
- Finding routine and repetitive tasks disproportionately effortful.
- Needing novelty, feedback, accountability, or immediate consequences to remain engaged.
Reward Sensitivity in ADHD
The issue is not that people with ADHD have a completely “different reward system.” More accurately, ADHD is associated with differences in reward processing, reinforcement, and sensitivity to the timing of rewards.
This can mean:
- Novelty captures attention more readily.
- Urgency can increase activation and motivation.
- Immediate rewards may exert greater motivational influence than delayed rewards.
- Delayed rewards may be less effective at sustaining behaviour.
- Repetitive or low-stimulation tasks may require substantially more effort to initiate and persist with.
Why Importance Alone May Not Be Enough
For many people with ADHD:
Immediate reward > delayed reward
Urgency > future importance
Interest and novelty > repetition
Immediate consequences > distant consequences
As a result, knowing that something is important does not necessarily generate enough immediate motivational activation to begin it.
This helps explain one of the apparent contradictions of ADHD: the same person can struggle significantly to begin a simple but unrewarding task, yet sustain intense effort and concentration on something that is interesting, novel, challenging, rewarding, or urgent.
Self-Management to Time
Self-management to time is the ability to perceive, estimate and organise time so that present behaviour is guided by future goals and consequences.
It supports the ability to:
- Sense the passage of time.
- Estimate how long tasks will take.
- Plan ahead and anticipate future demands.
- Prioritise competing tasks.
- Allocate enough time to complete activities.
- Pace work appropriately.
- Meet deadlines and appointments.
- Work consistently towards longer-term goals.
- Allow future consequences and rewards to influence present behaviour.
Difficulties with Self-Management to Time
Adults with ADHD may experience:
- Time blindness — reduced awareness of the passage of time.
- Underestimating how long tasks will take.
- Difficulty planning ahead for future events or responsibilities.
- Difficulty prioritising when several demands compete for attention.
- Procrastination and delayed task initiation.
- Running late despite intending to be punctual.
- Rushing tasks when time becomes limited.
- Last-minute completion of tasks.
- Difficulty pacing lengthy or multi-step activities.
- Becoming overwhelmed when organising complex tasks across time.
- Forgetting appointments, deadlines or future intentions.
- Reliance on external structure, reminders, deadlines or accountability.
- Difficulty allocating time to tasks that are repetitive, boring or offer little immediate reward.
- Hyperfocus during highly engaging or urgent activities, with reduced awareness of time and competing responsibilities.
Time Blindness
Time blindness refers to difficulty accurately perceiving the passage of time and using time as an internal guide for behaviour.
This may mean:
- Hours pass with little awareness.
- Tasks take considerably longer than expected.
- Future events feel psychologically distant.
- Deadlines do not feel immediate until they become urgent.
- There is difficulty judging how much can realistically be completed within a particular period.
- Planning and preparing for future demands is difficult.
As a result, urgency can become an external substitute for an internal sense of time. A task that has been difficult to initiate may suddenly become much easier to engage with when the deadline is close.
Future Rewards
Self-management to time also involves the ability to allow future goals, consequences and rewards to influence behaviour in the present.
In ADHD, delayed outcomes may have less influence over present behaviour than immediate stimulation or reward. A person may fully understand that something is important in the future while still finding it difficult to organise their behaviour around that future outcome.
This can contribute to:
- Immediate rewards being more motivating than delayed rewards.
- Difficulty sustaining effort towards distant goals.
- Procrastination when consequences are not immediate.
- Reliance on urgency or approaching deadlines to activate behaviour.
- Preference for activities that provide immediate interest, stimulation or reward.
- Difficulty delaying gratification when a more immediate alternative is available.
Professor Russell Barkley’s executive-functioning model emphasises the importance of using internal representations of the future to regulate behaviour in the present. From this perspective, ADHD can involve difficulty bringing the future psychologically close enough for it to consistently guide what a person does now.
Self-Organisation
This domain reflects the ability to perceive, estimate, monitor and use time to guide behaviour toward future goals.
This executive function refers to the ability to organise information, develop plans, sequence complex activities, solve problems efficiently, prioritise competing demands, and adapt strategies when circumstances change.
This looks like difficulties with:
❑ Estimating the time required to complete activities.
❑ Planning ahead and maintaining awareness of future demands.
❑ Prioritising and sequencing activities.
❑ Breaking larger tasks into manageable steps.
❑ Planning and managing projects.
❑ Maintaining organised systems.
❑ Meeting deadlines without external structure or urgency.
❑ Becoming overwhelmed when planning complex or multi-step activities.
❑ Running late despite intending to be punctual.
❑ Relying heavily on alarms, reminders, routines, and other external structures.
❑ Becoming intensely absorbed in highly engaging activities, with reduced awareness of time and competing responsibilities.
❑ remembering multiple components of tasks
❑ efficiently solving everyday problems.
❑ Planning often becomes inconsistent and inefficient.
❑ Tasks may be approached without a clear strategy, important steps overlooked, and priorities frequently change according to what is most immediately stimulating rather than what is most important.
❑ Multi-step activities can quickly become overwhelming, particularly when several demands compete simultaneously.
The presentation looks like :
❑ Poor awareness of the passage of time or “time blindness”
❑ Underestimating how long tasks will take
❑ Difficulty planning ahead and anticipating future demands
❑ Procrastination and delayed task initiation
❑ Difficulty prioritising according to importance
❑ Leaving tasks until deadlines become urgent
❑ Chronic lateness or rushing
❑ Difficulty pacing work across longer periods
❑ Losing awareness of time during highly engaging activities
❑ Knowing what needs to be done but struggling to translate future intentions into timely actione
❑ Important & not urgent
❑ Longer deadlines
❑ Repetitive activities
❑ Monotonous or boring activities
❑ Complex, requires concentration before starting
❑ Requires sustained mental effort or concentration
❑ Multi-step tasks
❑ Poorly defined activities
❑ Desire for task to be completed perfectly (perfectionism)
Self Restraint
Self-restraint refers to the brain’s ability to inhibit an immediate thought, emotion, or behaviour long enough to consider consequences, alternative responses, and future goals.
Without the ability to pause, the brain has less opportunity to engage planning, working memory, emotional regulation, and problem-solving.
Reduced self-restraint affects the brain’s ability to pause before
responding.
Rather than reflecting a lack of intelligence or motivation, these difficulties arise from reduced inhibitory control within the brain’s executive functioning networks.
Self-restraint represents the ability to inhibit immediate behavioural, cognitive and verbal responses.
It encompasses impulse control, delaying gratification, interrupting automatic reactions, thinking before acting, and suppressing responses that are inappropriate within a given context.
Difficulties in this domain affect virtually every aspect of self-control.
Individuals may experience marked difficulty interrupting conversations, waiting their turn, resisting impulses, delaying decisions, or preventing immediate emotional or behavioural reactions.
Thoughts are frequently expressed before they have been fully evaluated, resulting in comments or actions that are later regretted.
There may be impatience in queues, traffic, meetings, or social interactions, together with a tendency to make rapid decisions without fully considering future consequences.
Importantly, these behaviours are not typically deliberate or oppositional.
Rather, they reflect reduced inhibitory control arising from executive dysfunction.
The capacity to pause, mentally evaluate options, and intentionally choose a response is substantially compromised.
Cognitive Impulsivity
□ Makes decisions without pausing to think.
□ Responds before fully considering the situation.
□ Speaks without considering the impact of their words.
□ Makes important decisions impulsively without considering long-term consequences.
□ Feels compelled to express every thought or opinion immediately.
Behavioural Impulsivity
□ Acts before thinking through the consequences.
□ Has difficulty inhibiting automatic behavioural responses.
□ Has difficulty waiting for their turn during conversations and group activities.
□ Interferes with other people’s activities without being invited or when it is not appropriate.
□ Interrupts or takes over tasks that other people are completing.
Verbal Impulsivity
□ Speaks before thinking.
□ Has difficulty allowing other people opportunities to contribute during conversations.
□ Talks excessively during conversations.
□ Has difficulty stopping talking when it is appropriate to do so.
□ Has difficulty respecting other people’s personal, conversational, and social boundaries.
Distractability
Why Background Sound Can Improve Concentration in ADHD
Many people with ADHD find that background sound improves their ability to concentrate. Rather than being distracting, certain types of sound can provide the level of stimulation that helps the brain maintain alertness and sustain attention.
The ADHD brain seeks optimal stimulation
ADHD is associated with less efficient dopamine and noradrenaline signalling within the brain’s attention and executive functioning networks.
When environmental stimulation is too low, the brain may struggle to maintain an optimal level of alertness.
As a result:
□ Silence may provide insufficient stimulation to sustain attention.
□ The mind may wander more easily.
□ Internal thoughts become increasingly distracting.
□ The brain seeks alternative sources of stimulation.
Providing a moderate level of background sound may help increase cortical arousal and maintain an optimal level of attention.
This concept is consistent with the Optimal Stimulation Theory of ADHD.
Background sound may increase dopamine signalling
Certain forms of background sound, particularly predictable and enjoyable sounds, may help activate the brain’s reward and attention networks.
Potential benefits include:
□ Increasing motivation to begin tasks.
□ Improving task engagement.
□ Reducing the urge to seek stimulation elsewhere (such as checking a phone or changing activities).
□ Supporting sustained attention during repetitive or low-interest tasks.
Background sound helps reduce internal distraction
ADHD involves difficulty filtering both external and internal distractions.
When the environment is completely quiet:
□ Internal thoughts may become more intrusive.
□ Daydreaming and mind wandering may increase.
□ Worries or unrelated thoughts may compete for attention.
Consistent background sound provides a stable sensory input that may reduce awareness of distracting internal thoughts, allowing attention to remain on the task.
Rhythm supports sustained attention
Predictable rhythmic sounds may help regulate attention by supporting synchronisation within the brain’s attention networks.
Many individuals with ADHD find that steady rhythms improve:
□ Sustained attention.
□ Working memory.
□ Mental endurance.
□ Task persistence.
For this reason, many people prefer:
□ Instrumental music.
□ Lo-fi beats.
□ Brown noise.
□ White noise.
□ Rain or nature sounds.
Music with lyrics may be less helpful during reading or writing tasks because spoken words compete with the brain’s language processing systems.
Sound reduces boredom
One of the defining characteristics of ADHD is that attention is influenced more by interest, novelty, reward, and urgency than by importance alone.
Tasks that are:
□ Boring.
□ Repetitive.
□ Slow.
□ Mentally demanding.
□ Low in immediate reward.
are more likely to result in reduced attention and motivation.
Appropriate background sound can increase the level of stimulation sufficiently to make these tasks easier to initiate and sustain.
A Simple Analogy
A useful way to understand this is to think of the ADHD brain as an engine that naturally idles at a lower speed.
- Silence may provide too little stimulation, allowing attention to drift.
- Appropriate background sound acts like a gentle accelerator, increasing alertness and helping the brain maintain focus without becoming overwhelmed.
While not every person with ADHD finds background sound helpful, many discover that the right type of predictable, non-intrusive auditory stimulation improves concentration, reduces mind wandering, and makes sustained mental effort easier.
Emotional Regulation
Regulations of Emotions
Bipolar Affective Disorder (BPAD) & ADHD
Bipolar Affective Disorder (BPAD) & ADHD
Self-Regulation of Emotions
Self-regulation of emotions refers to the capacity to inhibit, modulate and recover from emotional responses in order to maintain behaviour consistent with long-term goals.
Individuals commonly experience emotions that are rapid in onset, intense in magnitude, and difficult to modify once activated.
Emotional responses frequently occur before conscious reflection, making it challenging to pause, evaluate the situation objectively, and respond proportionately.
Clinically, this may present as heightened frustration, irritability, impatience, sensitivity to criticism, emotional overwhelm, rapid mood shifts, reduced tolerance for stress, and prolonged recovery following emotionally
significant events.
Emotional responses often interfere with problem solving, decision-making, communication, and interpersonal relationships.
The difficulty lies not in experiencing emotions, but in managing their intensity, duration, and behavioural expression.
Impairment in this domain can significantly affect occupational functioning, intimate relationships, parenting, social interactions, and overall psychological wellbeing.
Lifetime co-occurring psychiatric disorders in newly diagnosed adults with
ADHD and Autism Spectrum Disorder. (2020)
Video : Anxiety & ADHD: How they are related By Dr Barkley
Perfectionism & ADHD & Anxiety By Dr Sharon Saline video
Emotional Dysregulation & Rejection Sensitivity Dysphoria
By Dr William Dodson Video (60 mins)
ADHD & Social Anxiety
By Dr Sharon Saline
Article: Females with ADHD: a lifespan approach in girls and women.
BMC Psychiatry (2020)
Article: Annual Research Review: ADHD in girls and women: underrepresentation,
longitudinal processes, and key directions.
Stephen P. Hinshaw. Journal of Child Psychology and Psychiatry (2021)
Article: Adverse experiences of women with undiagnosed ADHD and the invaluable role of diagnosis.
Holden, E., Kobayashi-Wood, H. Sci Rep 15, 20945 (2025).
Article: ADHD and Sex Hormones in Females: A Systematic Review .
J Atten Disord. 2025 Apr 18;29(9):706–723.
Article : Exploring Female Students’ Experiences of ADHD and its Impact on Social, Academic, and Psychological Functioning.
J Atten Disord. 2023 Aug;27(10):1129-1155.
ADHD in women and girls is frequently overlooked when anxiety or depression is present, because ADHD symptoms—especially inattention, restlessness, and emotional lability—are misattributed to the mood or anxiety disorder. Women with ADHD have a high likelihood of also experiencing anxiety disorders (generalised anxiety disorder, social anxiety, panic disorder, or phobias).
Studies estimate that 25–50% of women with ADHD meet criteria for at least one anxiety disorder at some point. Undiagnosed and untreated ADHD can frequently lead to a secondary presentation of general anxiety , triggered by the consequences , in home and work life, of challenges with procrastination, distractibility, time management, planning and setting and following through on priorities.
Frequently Woman are often treated first for anxiety and/or depression, delaying recognition of the under diagnosed ADHD.
Bipolar Affective Disorder (BPAD) & ADHD
Bipolar Affective Disorder (BPAD) & ADHD
Bipolar Affective Disorder (BPAD) & ADHD
This section is included to explain where misdiagnosis can occur. Misdiagnosis of Bipolar Affective Disorder when it may be ADHD.
The principle difference is that ADHD symptoms are contextual and situational, whereas bipolar symptoms are not triggered by any external factors. In a stimulating and positive environment, people with ADHD remain in a good internal state. If the environment is not stimulating enough, they can become bored or agitated. People with ADHD always experience life in this manner. Their sensibility and orientation toward the world is the same, even when they move through mood states of different intensities. Patients with ADHD can more often control their feelings by changing their environment and stimuli.
Depressive bipolar symptoms, on the other hand, can feel like a dark cloud emerging from an internal emotional state. No situational reasons trigger these feelings of depression; patients just wake up feeling fundamentally different when depressed and not depressed
At RMC we have an in depth understanding of the difference in both presentations.
Dr Lewis has a specialisation in the psychiatric treatment of combined ADHD and Bipolar Affective Disorder, and has 27 years of experience of psychiatric treatment of Bipolar 1 disorder and Bipolar 2 disorder.
An ADHD guide to Emotional Dysregulation & Rejection Sensitivity Dysphoria
By Dr William Dodson Video
Bipolar was formerly called manic-depressive illness or manic depression.
Bipolar Affective Disorder & ADHD share 14 features in common.Two studies, the STAR*D program
and the STEP-BD program, both found a tremendous overlap between the disorders.
For clients with bipolar disorder, there is a 40% chance of having ADHD as well.
ADHD:
With adult ADHD, you see a very di!erent pattern; the moods of an individual with
ADHD are clearly triggered. The ADHD symptoms of rejection sensitive dysphoria, for example,
is triggered by the perception that a person has been rejected, teased, or criticised.
An observer might not be able to point out the trigger, but the individual
with ADHD can say, “When my mood shifts, I can always see a trigger.
My mood matches my perception of the trigger.” In technical terms, ADHD moods are “congruent.”
Mood changes are instantaneous and intense in individuals with ADHD, much
more so than in a neuro-typical person.
ADHD moods rarely persist for more than a few hours. It is extremely
rare for them to last two weeks. Typically, the mood can be altered by
the person with ADHD finding a new interest or occupation that
captures their interest and distracts them from the intense emotion.
Bipolar Mood Disorder:
Unlike ADHD, bipolar is a classic mood disorder that has a life of its own separate from
the events of a person’s life, outside of the person’s conscious will and control.
Bipolar moods aren’t necessarily triggered by something; they just come and they stay.
Usually, the onset is very gradual over a period of weeks to months.
To meet the bipolar definition, the mood must be continuously present for at least
two weeks and then its resolution must be gradual over a period of weeks to months.
Depression and anxiety are often the most visible coexisting conditions experienced by women who have ADHD. Both conditions can be present as separate disorders or as the result of struggling with undiagnosed or poorly treated ADHD for a very long time.
The two conditions frequently prompt women to seek medical and mental health care and can lead to a diagnosis of ADHD.
When treating a woman or girl who has ADHD and a co-occurring condition, the clinician or treatment specialist needs to address the condition causing the most difficulty at that moment, especially conditions that can be life-threatening if untreated.
Rejection Sensitivity
Rejection Sensitivity Explained
Rejection sensitivity (often termed Rejection Sensitivity Dysphoria, RSD) is
A pattern of intense emotional pain and rapid mood shifts
Triggered by perceived or actual rejection, criticism, or failure.
Test for Rejection Sensitivity
❑ Rejection sensitive dysphoria (RSD) is an intense vulnerability to the perception — not necessarily the reality — of being rejected, teased, or criticised by important people in your life.
❑ The response is well beyond all proportion to the nature of the event that triggered it.
❑ Rejection sensitive dysphoria is not a formal diagnosis, but rather one of the most common and disruptive manifestations of emotional dysregulation a but under-researched and oft-misunderstood symptom of ADHD, particularly in adults.
❑ RSD is a brain-based symptom that is likely an innate feature of ADHD.
❑ Often, this intense emotional reaction is hidden from other people. People experiencing it don’t want to talk about it because of the shame they feel over their lack control, or because they don’t want people to know about this intense vulnerability.
❑ RSD causes extreme emotional pain that may also be triggered by a sense of failure, or falling short — failing to meet either your own high standards or others’ expectation.
❑ Dysphoria is the Greek word meaning unbearable; its use emphasise the severe physical and emotional pain suffered by people with RSD when they encounter real or perceived rejection, criticism, or teasing.
What RSD looks like
❑ A Disproportionate emotional response (e.g., shame, sadness, anger) to minor criticism or neutral feedback
❑ A Rapid onset and intensity, often described as overwhelming or unbearable
❑ Threat-based interpretation of social cues (e.g., assuming disapproval or abandonment)
❑ Behavioural consequences: avoidance, people-pleasing, withdrawal, rumination, or sudden anger
Why it occurs in ADHD
❑ Emotion regulation deficits: ADHD involves reduced top-down modulation from prefrontal networks, limiting the ability to dampen emotional responses once triggered.
❑ Heightened limbic reactivity: Increased sensitivity of threat-detection systems (e.g., amygdala) amplifies perceived social threat.
❑ Learning history: Repeated experiences of criticism, failure, or misunderstanding (especially in undiagnosed ADHD) condition strong emotional responses to feedback.
❑ Dopaminergic vulnerability: Fluctuations in reward and motivation systems increase sensitivity to social evaluation.
Rejection Sensitivity Resources
Deficient Emotional Self Regulation in ADHD Video by Dr Barkley
An ADHD guide to Emotional Dysregulation & Rejection Sensitivity Dysphoria
By Dr William Dodson Video
Rejection Sensitivity & Social Anxiety By Dr Sharon Saline Video
The 7 Truths about Emotions & ADHD Video by Dr William Dobson
Managing Rejection Sensitivities in Real Time video By Dr Sharon Saline
How ADHD shapes perception, motivations & emotions Video
by Dr William Dobson
Managing big emotions in ADHD Video by Dr Sharon Saline
Article: 3 Defining Features of ADHD That Everyone Overlooks
Article: Exaggerated Emotions: How and Why ADHD Triggers Intense Feelings
Article: Rejection Sensitivity Is Worse for Girls and Women with ADHD
Article: How ADHD Ignites RSD: Meaning & Medication Solutions
Article: New Insights Into Rejection Sensitive Dysphoria
Article: RSD Vs Bipolar Disorder
How RSD presents
Internalised RSD:
Presents as sudden, intense sadness that can imitate a major mood disorder, sometimes with suicidal ideation. This rapid shift in mood is often misdiagnosed as rapid-cycling bipolar disorder or major depressive episodes.
Externalised RSD:
Manifests as instantaneous rage toward the person or situation perceived as rejecting
Can be mistaken for anger dysregulation or oppositional behaviour .
Anticipatory RSD:
Leads individuals to constantly scan for potential rejection, even when uncertain.
May resemble social phobia, though the core fear is different
Social Anxiety Vs Rejection Sensitivity:
Social phobia: fear of public humiliation or negative scrutiny.
RSD: fear of losing love, approval, or respect.
Subjective Experience:
People often struggle to put RSD into words. They describe it as Intense, Awful, Terrible, Overwhelming
The emotional reaction is consistently tied to a perceived or real loss of approval, love, or respect.
Neurodivergent Trauma
Articles on Neurodivergent Insights
Neurodivergent trauma describes the traumatic impact that can arise when autistic, ADHD, or AuDHD individuals repeatedly experience environments that do not accommodate their neurological differences.
While neurodivergence itself is not traumatic, ongoing experiences of misunderstanding, exclusion, sensory overload, social rejection, and pressure to conform can contribute to chronic stress and, for some people, symptoms of trauma or complex trauma.
According to studies by Adler et al., (2004) and Kessler et al. (2006), ADHD is actually a risk factor for developing PTSD. But there are a few other factors that contribute to this overlap too.
People with ADHD are at a higher risk for experiencing traumatic events in the first place (Ford et al., 2009). The nervous systems are more sensitive, which means that traumatic events can hit us even harder and make us more likely to develop PTSD (Biederman et al., 2012),
According to Crenshaw and Mayfield, (2021), early life trauma can act as a trigger for those who are genetically predisposed to ADHD.
Autism and trauma often co-occur, yet this intersection remains under-researched and seldom highlighted in clinical training. Autistic people are at a significantly higher risk of developing PTSD after experiencing trauma due to several factors that intertwine their neurobiology with their social experiences.
A recent study highlighted that even when criteria A of PTSD (Big T Trauma) is not met, Autistic people will often develop PTSD symptoms (Rumball et al., 2020).
While there are several factors, here are a few of the reasons Autistic people may be more vulnerable to developing PTSD following a traumatic experience.
□ We have more vulnerable neurobiology (more reactive nervous systems)
□ Increased risk of victimisation
□ Sensitive sensory profiles that encode memory with more intensity
□ The chronic stress and invalidation of navigating an allistic world.
Chronic Invalidation:
Many neurodivergent people experience repeated misunderstanding, criticism, bullying, social rejection, or pressure to behave in neurotypical ways. Over time, these experiences can contribute to persistent feelings of shame, hypervigilance, low self-worth, and difficulties trusting others.
Sensory Overload:
Everyday environments containing bright lights, loud noise, crowded spaces, unexpected touch, or strong smells may repeatedly overwhelm the nervous system. Frequent sensory overload can contribute to chronic stress, fatigue, emotional dysregulation, and heightened threat responses.
Masking:
Many autistic and AuDHD individuals consciously or unconsciously suppress natural ways of communicating, moving, or responding in order to fit social expectations. Although masking may reduce social conflict in the short term, maintaining it over long periods has been associated with increased anxiety, depression, exhaustion, autistic burnout, and reduced wellbeing.
Repeated Social Rejection:
Many neurodivergent people experience repeated experiences of being excluded, criticised, misunderstood, or feeling “different.” Over time, these experiences can increase sensitivity to rejection, reduce self-confidence, and contribute to chronic stress and trauma-related symptoms. This is particularly relevant for individuals with ADHD who experience significant rejection sensitivity.
ADHD Burnout
Understanding ADHD Burnout: Causes, Symptoms, and Coping Strategies
Living with ADHD (Attention Deficit Hyperactivity Disorder) means navigating a brain that works differently. While it comes with strengths—like creativity, energy, and unique problem-solving—it also brings daily challenges around focus, organization, and emotional regulation. Add in the constant pressure to keep up in a fast-paced world, and many people with ADHD eventually hit a wall: ADHD burnout.
This type of burnout is often misunderstood, but it’s a very real and overwhelming experience.
Let’s dive into what it is, why it happens, and how to recover when you feel completely drained.
What Is ADHD Burnout?
ADHD burnout is a state of mental, emotional, and physical exhaustion. It happens when someone with ADHD pushes themselves too hard—often trying to meet external expectations—while also managing the everyday demands that ADHD makes harder.
Some of the key drivers include:
- Constant overwhelm from tasks that feel impossible to finish
- Pressure to “keep up” with neurotypical peers
- The heavy mental load of masking symptoms in work or social settings
- Lack of rest, self-care, or proper support
Over time, this pressure adds up, leaving you feeling depleted, stuck, and hopeless.
Causes of ADHD Burnout
There isn’t just one reason ADHD burnout happens—it’s usually a mix of factors. Here are some of the most common:
Cognitive Overload
Because ADHD impacts executive function, everyday tasks like planning, prioritizing, or meeting deadlines require extra effort. That constant mental strain leads to fatigue.
Hyperfocus (and the Crash After)
When someone with ADHD locks into a task, they can work for hours straight—forgetting meals, breaks, or rest. Eventually, the body and brain crash, creating burnout.
Inconsistent Motivation
Tasks that feel boring can be almost impossible to start, while interesting ones may lead to overwork. That rollercoaster creates stress and imbalance.
Social and Emotional Stress
ADHD often comes with feeling misunderstood, judged, or “not enough.” Social interactions can feel draining, and emotional stress compounds the burnout cycle.
Masking
Trying to hide ADHD traits in professional or social settings takes huge effort. Over time, that performance is exhausting.
Sleep Struggles
Many people with ADHD wrestle with insomnia, racing thoughts, or irregular sleep patterns. Poor rest makes recovery from burnout even harder.
Signs and Symptoms of ADHD Burnout
ADHD burnout can look different for everyone, but some common signs include:
- Emotional exhaustion – feeling empty, drained, or numb
- Difficulty prioritizing – getting stuck, unable to decide what to do first
- Physical fatigue – tired no matter how much you rest
- Impulsivity – turning to quick “escapes” like shopping, eating, or scrolling
- Social withdrawal – avoiding people because it feels overwhelming
- Brain fog – struggling to concentrate, even on things you enjoy
- Mood swings or irritability – snapping over small things
- Declining performance – work, school, or relationships start to suffer
- Hopelessness – believing you’ll never “catch up”
Coping Strategies: How to Recover from ADHD Burnout
The good news is: recovery is possible. It takes patience, self-compassion, and strategies that work with your ADHD brain—not against it. Here are some steps to help you reset:
1. Recognize the Signs Early
Burnout sneaks up on you. Noticing the red flags (irritability, brain fog, emotional fatigue) gives you a chance to pause before things get worse.
2. Lower the Bar
Set realistic expectations. Perfectionism and impossible standards feed burnout—aim for “good enough” instead of “perfect.”
3. Use ADHD-Friendly Tools
- Break tasks into smaller steps
- Use timers (Pomodoro method works well)
- Create visual reminders like task boards or sticky notes
4. Build in Breaks
Schedule downtime the way you would schedule a meeting. Your brain needs recovery time.
5. Practice Self-Compassion
ADHD isn’t about laziness or weakness—it’s neurological. Speak to yourself kindly and give yourself permission to rest.
Causes of ADHD
Prenatal and Early Life Risk Factors of ADHD: What Research Says — and What Parents Can Do.
Additude Article September 2025
For most people with ADHD, many genetic and environmental risk factors accumulate to cause the disorder (Faraone et al., 2015).
The environmental risks for ADHD exert their effects very early in life, during the fetal or early postnatal period. In rare cases, however, ADHD-like symptoms can be caused by extreme deprivation early in life (Kennedy et al., 2016), a single genetic abnormality (Faraone and Larsson, 2018), or traumatic brain injury early in life (Stojanovski et al., 2019).
These findings are helpful to understand the causes of ADHD but are not useful for diagnosing the disorder.
The associations between aspects of the environment and the onset of ADHD have attained a very high level of evidential support. Some have strong evidence for a causal role but, for most, the possibility remains that these associations are due to correlated genetic and environmental effects.
For this reason, we refer to features of the pre- and post-natal environments that increase risk for ADHD as correlates, rather than causes.
The genetic and environmental risks described below are not necessarily specific to ADHD.
ADHD can also be the result of rare single gene defects (Faraone and Larsson, 2018) or abnormalities of the chromosomes (Cederlof et al., 2014). When the DNA of 8000+ children with autism spectrum disorder (ASD) and/or ADHD and 5000 controls was analyzed, those with ASD and those with ADHD had an increased rate of rare genetic mutations compared with controls (Satterstrom et al., 2019).
A review of 37 twin studies from the United States, Europe, Scandinavia, and Australia found that genes and their interaction with the environment must play a substantial role in causing ADHD (Faraone and Larsson, 2018; Larsson et al., 2014a; Pettersson et al., 2019).
In a genomewide study, an international team analysed DNA from over 20,000 people with ADHD and over 35,000 without ADHD from the United States, Europe, Scandinavia, China, and Australia. They identified many genetic risk variants, each having a small effect on the risk for the disorder (Demontis et al., 2019).
This study confirmed a polygenic cause for most cases of ADHD, meaning that many genetic variants, each having a very small effect, combine to increase risk for the disorder. The polygenic risk for ADHD is associated with general psychopathology (Brikell et al., 2020) and several psychiatric disorders (Lee et al., 2019a,b
Family, twin, and DNA studies show that genetic and environmental influences are partially shared between ADHD and many other psychiatric disorders (e.g. schizophrenia, depression, bipolar disorder, autism spectrum disorder, conduct disorder, eating disorders, and substance usedisorders) and with somatic disorders (e.g. migraine and obesity) (Demontis et al., 2019) (Faraone and Larsson, 2018) (Ghirardi et al., 2018) (Lee et al., 2019a,b) (Lee et al., 2013) (Anttila et al., 2018; Tylee et al., 2018) (van Hulzen et al., 2017) (Vink and Schellekens, 2018) (Brikell et al., 2018) (Chen et al., 2019a) (Yao et al., 2019).
However, there is also a unique genetic risk for ADHD.
Evidence of shared genetic and environmental risks among disorders suggest that these disorders also share a pathophysiology in the biological pathways that dysregulate neurodevelopment and create brain variations leading to disorder onset.
Very large studies of families suggest that ADHD shares genetic or familial causes with autoimmune diseases (Li et al., 2019), hypospadias (Butwicka et al., 2015), and intellectual disability (Faraone and Larsson, 2018).
ADHD Brain
References
Foundational ADHD Neurobiology
- Russell A. Barkley (2015). Attention-Deficit Hyperactivity Disorder: A Handbook for Diagnosis and Treatment (4th ed.). Guilford Press.
- Russell A. Barkley (1997). Behavioral inhibition, sustained attention, and executive functions: Constructing a unifying theory of ADHD. Psychological Bulletin, 121(1), 65–94.
Dopamine and ADHD
- Nora D. Volkow, Wang, G. J., Newcorn, J., et al. (2011). Motivation deficit in ADHD is associated with dysfunction of the dopamine reward pathway. Molecular Psychiatry, 16(11), 1147–1154.
- Nora D. Volkow, Wang, G. J., Kollins, S. H., et al. (2009). Evaluating dopamine reward pathway in ADHD: Clinical implications. JAMA, 302(10), 1084–1091.
- Philip Asherson, Buitelaar, J., Faraone, S. V., & Rohde, L. A. (2016). Adult ADHD and comorbid disorders: Clinical implications of a dimensional approach. BMC Psychiatry, 16, 301.
Salience, Motivation and Reward Processing
- Edmund Sonuga-Barke (2005). Causal models of ADHD: From common simple deficits to multiple developmental pathways. Biological Psychiatry, 57(11), 1231–1238.
- Edmund Sonuga-Barke (2011). Neuropsychological heterogeneity in ADHD: Reward and motivational pathways. Behavioral Brain Research, 215(1), 1–8.
- Samuele Cortese, Kelly, C., Chabernaud, C., et al. (2012). Toward systems neuroscience of ADHD: A meta-analysis of functional MRI studies. American Journal of Psychiatry, 169(10), 1038–1055.
Executive Functioning and Dopamine Networks
- Adele Diamond (2005). Attention-deficit disorder and the prefrontal cortex. In Development and Psychopathology, 17(3), 807–825.
- Adele Diamond (2013). Executive functions. Annual Review of Psychology, 64, 135–168.
- Arnsten, A. F. T. (2009). The emerging neurobiology of attention deficit hyperactivity disorder: The key role of the prefrontal association cortex. Journal of Pediatrics, 154(5), I–S43.
Current Consensus Reviews
- Faraone, S. V., Asherson, P., Banaschewski, T., et al. (2021). The World Federation of ADHD International Consensus Statement: 208 evidence-based conclusions about ADHD. Neuroscience & Biobehavioral Reviews, 128, 789–818.
- Cortese, S., Adamo, N., Del Giovane, C., et al. (2018). Comparative efficacy and tolerability of medications for ADHD in children, adolescents, and adults: A systematic review and network meta-analysis. The Lancet Psychiatry, 5(9), 727–738.