ADHD symptoms are stress symptoms
The World Health Organization, WHO, points out in the ADHD screening test it developed, “The symptoms of this disorder are often misidentified as stress.”1 Nigg formulates: “…adversity can cause a child to look just like he has ADHD.”2 and says nothing else than that stress can generate very confusable symptoms to ADHD. Individual studies also address the relationship between stress and ADHD symptoms.3
We believe that almost all ADHD symptoms are “normal” stress symptoms. This does not mean that ADHD and stress are the same thing. Chronic uncontrollable stress, i.e. severe (and often psychological) stress that is perceived as threatening or frightening, can - completely independently of ADHD - trigger almost identical symptoms as can be caused by ADHD. Cognitive impairment can be caused by psychological as well as physical stress.4
Conversely, however, not all stress symptoms are also ADHD symptoms - although the degree of correspondence is quite impressive. In this article, we only present ADHD symptoms that are also stress symptoms.
The fact that ADHD symptoms can also be caused by other causes than ADHD is already being balanced by differential diagnostics during the ADHD history. ⇒ Differential diagnostics in ADHD
We have added the manifestation of the corresponding ADHD symptoms in italics.
In each case, the references refer to the symptom as a stress symptom.
At ⇒ Symptoms of ADHD For each ADHD symptom, we have also integrated the source references from the stress literature that prove that the respective symptom is also known to be a stress symptom.
The initially somewhat surprising fact that all ADHD symptoms are also stress symptoms becomes apparent when one understands the utility of stress symptoms. At ⇒ Stress benefits-the survival-enhancing purpose of stress symptoms We explain the term stress benefit and describe the stress benefit of the particular stress/ADHD symptom.
We explain that ADHD thus mediates its symptoms by causing a disruption of the stress response systems in which they chronically overreact, so that affected individuals suffer from symptoms of significant stress even in the absence of an external stressor, in our article ⇒ ADHD as a chronicized stress regulation disorder. To avoid misunderstanding, this does not mean that ADHD would be a consequence of still ongoing chronic stress and would end with elimination of the stressor. This is the essential difference between ADHD and chronic stress: stress goes with the stressor, ADHD stays.
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1. Cognitive symptoms
- 1.1. Attention problems
- 1.2. Concentration problems
- 1.3. Forgetfulness
- 1.4. Blocks to thinking
- 1.5. Brooding; thoughts focus on the stressor
- 1.6. Deteriorated self-awareness until inability to recover
- 1.7. Delay Aversion / Delay Aversion
- 1.8. Delay Discounting / Devaluation of later reward
- 1.9. Decision problems
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2. Behavior
- 2.1. Increased locomotor activity (urge to move, restlessness to move)
- 2.2. Unrest
- 2.3. Aggression
- 2.4. Listlessness
- 2.5. Social withdrawal
- 2.6. Performance impaired
- 2.7. Drug / nicotine / alcohol abuse (addiction)
- 2.8. More risky decisions
- 2.9. Impulsivity
- 2.10. Sexual problems / loss of libido (not an ADHD symptom)
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3. Emotional symptoms
- 3.1. Mood swings (often sad / depressed)
- 3.2. Self-esteem issues
- 3.3. Irritability
- 3.4. Anger / Rage
- 3.5. Listlessness/motivation problems
- 3.6. Feeling of being overwhelmed
- 3.7. Fear/anxiety
- 3.8. Increased sensitivity
- 3.9. Alexithymia (reduced perception of feelings)
- 3.10. Frustration Intolerance
- 3.11. Easier to get sick
- 4. Physical symptoms
1. Cognitive symptoms
1.1. Attention problems
Attention problems as stress symptoms.5678
- Almost any mental disorder will cause attention problems,9 for example:
- Psychosis
- Tourette
- Mania
- Panic disorders
- Obsessive Compulsive Disorder
Specific to ADHD is the (attentional) impairment to perform a preconceived future directed action. ADHD sufferers are distracted by unimportant stimuli from the environment, but selective attention is hardly impaired.10
In our view, however, task switching problems are common in ADHD and are a consequence of impaired controllability of attentional orienting.
The norepinephrine and dopamine levels, which are elevated during acute stress, impair the functionality of the PFC above a certain level.4 While slightly elevated norepinephrine levels increase the ability to think, very high norepinephrine levels decrease this ability and behavioral control is transferred from the PFC to the posterior cortex.11
Stress directly influences12
- Arousal
- Vigilance
- focused attention.
1.2. Concentration problems
Concentration problems as stress symptoms.851361415
For the alteration of the functions of the PFC due to the very elevated level of noradrenaline during stress, see under 1.1. Attention problems.
Identical for ADHD.
1.3. Forgetfulness
Forgetfulness5 or memory problems as a symptom of stress:1651415
- Implicit memory impaired17
- Declarative memory impaired17
- Working memory impaired17
- For the alteration of the functions of the PFC due to the very elevated level of norepinephrine during stress, see under 1.1. Attention problems
All of the above symptoms also occur in ADHD, but not in all sufferers.18
1.4. Blocks to thinking
Thought blocks are a symptom of stress.514
For the alteration of the functions of the PFC by very elevated levels of norepinephrine during stress, see under 1.1. Attention Problems. The shutdown of the PFC by very high levels of norepinephrine and dopamine during severe stress blocks
- The ability to think analytically
- Decision-making processes
Thought blocks are a typical ADHD symptom.
1.5. Brooding; thoughts focus on the stressor
Rumination is a symptom of stress.8
- for ADHD: circling of thoughts
- in ADHD: Compulsion as a frequent comorbidity
1.6. Deteriorated self-awareness until inability to recover
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Low emotional self-control, spontaneity of feelings or avoidance of feelings (coolness, emotional dysregulation) is a symptom of stress.19
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with ADHD: not being able to enjoy
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in ADHD and procrastination: aversion to mindfulness / reduced mindfulness
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See also: Alexithymia under feelings
1.7. Delay Aversion / Delay Aversion
Delay aversion is a stress symptom. It is understood as an impulsivity reaction. It correlates with impulsivity under stress, in women at the same time with increasing heart rate.2021
Stress-reducing measures simultaneously reduce delay aversion.22
Expressions:
- Impatience
- Can not wait
Occurs identically in ADHD.
Although not included in the ICD 10 / DSM IV symptom lists, delay aversion is one of the core symptoms of ADHD.
1.8. Delay Discounting / Devaluation of later reward
Delay Discounting is a stress symptom. This is also called Discounting of Delayed Rewards, Temporal Discounting or Reward Prediction Error (RPE).222319
Rewards that are immediate are preferred to the same degree as by people without stress.
Rewards that are distant in time are considered less attractive than by people without stress.
Delay Discounting has several forms of expression:
1.8.1. Procrastination
1.8.2. Addictive tendencies
1.8.3. Clutter
1.8.4. Self-regulatory ability impaired
Self-regulatory ability is an even greater predictor of career success than intelligence.
1.9. Decision problems
Decision-making problems are well-known symptoms of stress.222425
for ADHD identical
- ADHD-HI: impulsive, non-thought-out, spontaneous decisions
- ADHD-I: Difficulty making decisions
2. Behavior
2.1. Increased locomotor activity (urge to move, restlessness to move)
Hyperactivity is a symptom of stress.262728
Increased locomotor activity is a direct effect of the stress hormone CRH.2930
In ADHD-HI this symptom is called hyperactivity (occurs mainly in children).
2.2. Unrest
(Inner) restlessness5 and restlessness56 28 15 are symptoms of stress.
Inner restlessness is a typical symptom of the approaching end state of burnout.31
In ADHD-HI: inner drive, always having to do something (primarily adults)
2.3. Aggression
Aggression is a symptom of stress.326
In ADHD-HI (with hyperactivity), aggression often occurs as a comorbidity.
2.4. Listlessness
Listlessness is a symptom of stress856
Listlessness is a typical symptom of the approaching end state of burnout.31
In ADHD: dysphoria with inactivity
2.5. Social withdrawal
Social withdrawal is known as a typical symptom of severe stress.68
A reduction in social contacts during stress is attributed to the fact that3319
- No positive or even negative response is expected (avoidance or aggression, see the article on Rejection Sensitivity)
- The need for security and control is too great (too much closeness, ambivalence, closeness-distance pendulum)
Increased withdrawal behavior is a direct effect of the stress hormone CRH.2930
An increasing restriction of social contacts is a typical symptom of burnout.31
In ADHD, social withdrawal is common and goes as far as social phobia.
2.6. Performance impaired
When stress is severe, performance is impaired.61415
Obstruction of effort, due to lack of satisfaction from success or lack of expectation of success (listlessness, shutting down, denial) are symptoms of stress.19
Slight exhaustibility, lack of energy and daytime fatigue are typical symptoms of the approaching end state of burnout.31
Occurs identically in ADHD.
2.7. Drug / nicotine / alcohol abuse (addiction)
Medication / nicotine / alcohol abuse (addiction) is a symptom of stress68
Smoking correlates with stress.23
For ADHD:
- significantly increased rate of smokers
- frequent comorbidity addiction
2.8. More risky decisions
Riskier decisions are a symptom of stress.34
Occurs identically in ADHD-HI (with hyperactivity):
- Risk affinity
- spontaneous, rash decisions
2.9. Impulsivity
Impulsivity is a symptom of stress.22
Occurs identically in ADHD-HI (with hyperactivity).
2.10. Sexual problems / loss of libido (not an ADHD symptom)
Sexual problems / loss of libido are a symptom of stress568
Libido suppression is a direct effect of the stress hormone CRH.2930
Sexual problems or listlessness are not typical ADHD symptoms, but they do occur in ADHD.
In ADHD, disturbed sexuality tends to be mentioned as a common comorbidity.35 Sexuality is further mentioned as an addictive object and a means of tension relief in ADHD.36 One study found less sexual satisfaction, more sexual desire, more sexual dysfunction, and riskier sexual behavior in ADHD sufferers.37
The number of sexual partners in ADHD is typically increased, and first sex occurs earlier on average than in unaffected individuals. A decrease in libido is sometimes cited in conjunction with medication for ADHD38 or depression.
3. Emotional symptoms
3.1. Mood swings (often sad / depressed)
Mood swings are a symptom of stress.15
Frequent sadness is known as a stress symptom.8
Being frequently depressed / depression are also stress symptoms.1656515
Despair is a direct effect of the stress hormone CRH.3930 In contrast, noise or movies rarely trigger cortisolergic stress.
In ADHD: dysphoria with inactivity as the main symptom; in addition, true depression often occurs as a comorbidity.
3.2. Self-esteem issues
Self-esteem problems are typical symptoms of severe stress.3319
- Low self-worth
- Self-hate
- Suicidal tendency
- Guilt and shame
This is equally true of listlessness,56 which could be considered the equivalent of dysphoria when inactive and feeling depressed.406
In particular, a perceived uncontrollable threat to self-esteem leads to cortisol release.4142
Feelings of inferiority and failure are typical symptoms of the final state of burnout.31
In ADHD: emotional dysregulation is a typical symptom.
3.3. Irritability
Frequent irritability is a symptom of stress.56 Irritability is a typical symptom of the approaching end state of burnout.31
In ADHD and extraverted personality (ADHD-HI, ADHD-C): often
3.4. Anger / Rage
Anger / rage are well-known symptoms of stress.6
In ADHD and extraverted stress phenotypes (ADHD-HI, ADHD-C): often
3.5. Listlessness/motivation problems
Listlessness/motivation problems are common symptoms of stress.5615 Listlessness is presented here as the emotional side of listlessness.
For listlessness see above under 2.4.
Motivation and drive problems are common in ADHD.
3.6. Feeling of being overwhelmed
Feeling overwhelmed is a symptom of stress.56
This is also common in ADHD.
3.7. Fear/anxiety
Increased anxiety is a symptom of stress.62815
Increased anxiety, increased fear conditioning, and increased caution in unfamiliar environments, open field, elevated plus maze, and conflict are direct effects of the stress hormone CRH.4330
Anxiety is often elevated in ADHD, especially ADHD-I. Anxiety disorders are a common comorbidity of ADHD and can develop from untreated ADHD.
3.8. Increased sensitivity
Increased sensitivity is a symptom of stress.4415
ADHD always includes (at least partial) high sensitivity.
3.8.1. Frightfulness
Increased startle responses are a direct effect of the stress hormone CRH.2930
3.8.2. Increased alertness / attention
Increased alertness and attention is a direct effect of the stress hormone CRH.2930
3.8.3. Increased acoustic perception
Increased auditory perception is a direct effect of the stress hormone CRH.2930
3.8.4. Sensory overload
Overstimulation is a symptom of stress.44
Heightened sensitivity can also be referred to as high sensitivity.
In ADHD: stimulus filter too wide open.
3.9. Alexithymia (reduced perception of feelings)
- Reduced perception of own feelings45
- Low emotional self-control, spontaneity of feelings or avoidance of feelings (coolness, emotional dysregulation)19
- Emotional flattening (with persistent sickliness) is a typical symptom of the end state of burnout.31
In contrast to many other symptoms mentioned here, alexithymia does not seem to be a directly neurophysiologically mediated symptom, but rather a frequent consequence of or associated with an insecure-avoidant attachment style.
Emotional poverty / inner emptiness / alexithymia is a possible symptom in ADHD.
3.10. Frustration Intolerance
Frustration intolerance is a typical symptom of the end state of burnout.31
Frustration intolerance is a typical ADHD symptom.
3.11. Easier to get sick
Increased sickliness is a typical symptom of the end state of burnout.31
Increased sickliness is a very common ADHD symptom. We call it Rejection Sensitivity there.
4. Physical symptoms
Somatic complaints could be the only type of stress that occurs significantly less in ADHD sufferers than in non-affected persons.46 This circumstance would be most astonishing and not plausible without more detailed research and explanation. As is well known, this does not apply to sleep disorders. However, our own research also indicates - to our own astonishment - that somatic stress symptoms are significantly underrepresented in adult ADHD sufferers. Exceptions exist only in sleep disturbances (very clearly) and exhaustion states and muscle tension (still clearly). All other somatic stress symptoms, however, are (still significantly) lower than in non-affected persons.
4.1. Sleep disorders
Sleep disorders are a symptom of stress.4730682815
Increased wakefulness and decreased deep sleep is a direct effect of the stress hormone CRH.2930
Frequent nightmares are also mentioned as a symptom of stress.828
Sleep disturbances are very common in ADHD.
4.2. Muscle twitching
Muscle twitching is a symptom of stress.85
In ADHD: often similar muscle twitching to a mild form of restless legs when falling asleep
4.3. Increased muscle tension
Increased muscle tension is a symptom of stress.64828
Increased muscle tone can lead, for example, to back pain and even vertebral blockages.
In combat, increased muscle tone protects against injury.
4.4. Increased sensitivity to pain
Increased sensitivity to pain is a symptom of stress.15
4.5. Exhaustion states
Exhaustion is a symptom of stress.6
4.6. Cardiovascular complaints
Cardiovascular complaints are a symptom of stress.5628
ADHD-HI and ADHD-C (less ADHD-I) often correlate with elevated blood pressure and susceptibility to heart problems.
4.7. Loss of appetite / ravenous hunger
Eating disorders are a symptom of stress.68293015
Loss of appetite is a direct effect of the stress hormone CRH.2930
Obesity is at least twice as common in ADHD as in non-affected individuals. Eating disorders are up to 8 times more common in ADHD sufferers than in non-affected individuals. More on this in the article ⇒ ADHD, obesity, and eating disorders.
4.8. Headache
Headaches are a well-known symptom of stress.56828
4.9. Abdominal pain
Abdominal pain is a common symptom of stress,68 especially in children.
Nausea is also known as a symptom of stress.28
4.10. Frequent colds
Frequent colds are a symptom of stress.5
An increased susceptibility to infections is a typical symptom of the approaching end state of burnout.31
Stress hormones (adrenaline, CRH, ACTH) are able to artificially boost the immune system for a certain time. For the Homo sapiens species, it was simply conducive to survival in situations of hardship, where survival had to be fought for at great expense, when not exactly simple (preventable) diseases occurred. The stress hormones adrenaline and CRH therefore cause a (temporary) pro-inflammatory increase in the activity of the immune system.
However, on the one hand, this increase is energy-sapping and, on the other hand, during the first stress pause, the body now takes the necessary regeneration and starts actively fighting disease - e.g. through fever and other mechanisms with which the body protects itself against pathogens.
This is the reason why many people get sick during the first week of vacation - when the stress subsides.
In addition to its stress symptom-mediating effects, cortisol also has the task of terminating the stress response (by inhibiting the hormones secreted at the beginning of the stress chain and thus limiting its own release over time). Cortisol simultaneously reduces the pro-inflammatory effects of adrenaline and CRH and instead promotes other immune responses directed primarily against bacteria and parasites. Depending on the direction in which the stress systems are out of balance, excessive inflammation (e.g. of the intestinal mucosa in morbus crohn’s or of the skin in neurodermatitis) or excessive immune reactions against external pathogens (e.g. allergies) can occur.
4.11. Increasing respiratory rate
Panting is a symptom of stress.49650
Increased breathing rate is not known to be an ADHD symptom.
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