Neurodevelopmental Disorders Flashcards

IDD, ADHD, ASD (59 cards)

1
Q

What are the two main symptom groups in ADHD?

A

Inattention
Hyperactivity and impulsivity

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2
Q

Describe the basic criteria for ADHD

A

Required that at least 6 of the 9 inattention and 6 of the 9 hyperactivity/impulsivity symptoms be present for at least 6 months and with the onset being before the age of 12 years

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3
Q

What are the subtypes of ADHD

A

Predominently hyperactivity or inattention or mixed

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4
Q

What is the “impairment” requirement for diagnosis of ADHD?

A

Impairment must be in two areas or more

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5
Q

How does the diagnosis of ADHD change in those aged 17 or older

A

Only 5 symptoms of inattention and 5 symptoms of hyperactivity or impulsivity are required.

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6
Q

Which gene has been linked to ADHD in genetic studies

A

Dopamine transporter gene

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7
Q

Other than familial history, what are some other risk factors associated with ADHD?

A

maternal substance abuse, obstetric complications, malnutrition, exposure to toxins, viral infections

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8
Q

Which areas of the brain are found to have abnormalities in children with ADHD?

A

Prefrontal cortex
Basal ganglia
Cerebellum

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9
Q

Persistence of ADHD symptoms into adolescence and adulthood are predicted by which factors?

A

Family history of the disorder
Negative life events
Comorbidity with conduct symptoms, depression and anxiety disorders.

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10
Q

What are some of the psychosocial interventions for ADHD?

A

Psychoeducation
Parent training - positive reinforcement, closely monitor the environment to minimize distractions
Behavior modification in the classroom and at home
CBT
Social skills training

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11
Q

What is the basic MOA of methylphenidate?

A

Inhibits the reuptake of dopamine and norepinephrine in the brain which increases the activity of these two neurotransmitters

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12
Q

What is the typical weight based dosing of methylphenidate?

A

0.3mg/kg before breakfast and lunch

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13
Q

What is the typical dose increase increments for methylphenidate

A

Increase by 0.1mg/kg/week

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14
Q

What is the maximum dosage of methylphenidate

A

2mg/kg or 60mg/day

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15
Q

What are some contraindications of methylphenidate

A

Anxiety
Cardiac conditions
Motor tics
Tourettes
Glaucoma
Use with MAO inhibitor or use within 14 days of discontinuation of a MAO inhibitor

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16
Q

What are some serious side effects of methylphenidate?

A

Tachycardia
Hypertension
Seizures
Thrombocytopenia
Arrythmias
Worsening of Tourette’s syndrome
Psychosis
Growth retardation
Dermatitis
Erythema multiforme

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17
Q

Which groups of patients should methylphenidate be used with caution?

A

Hypertension
Diabetes
Seizure disorder
Cardiac disorders
Drug abuse
EEG abnormalities
Dementia

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18
Q

What is some advice you would give to those using methylphenidate

A

Take the last dose with lunch to avoid insomnia
Do not mix with caffeine
Use OTC drugs with caution

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19
Q

What are three other classes of drugs that can be used in the treatment of ADHD and examples of drugs in each class?

A
  • Norepinephrine reuptake inhibitor (Atomoxetine)
  • Alpha-agonist (Clonidine)
  • Antidepressant (Bupropion)
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20
Q

List the DSM 5 criteria for ADHD

A

A - a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development as characterized by (1) and/or (2)
(1) Inattention - 6 (or 5 in older children) or more of the the following symptoms have persisted for at least 6 months to a degree that is inconsistent with developmental level and that negatively impaccts directly on social and academic/occupational activities.
(2) Hyperactivity - same as above

B - several of the symptoms were present prior to the age of 12 years
C - several of the symptoms are present in two or more settings
D - clear evidence that they interfere with or reduce the quality of social, academic or occupational functioning
E - do not occur exclusively during the course of SCZ or another psychotic disorder and are not better explained by another psychiatric disorder.

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21
Q

What are the 9 inattention symptoms?

A

1 - often fails to give close attention to details or makes careless mistakes in schoolwork, at work, or during activities
2 - often has difficulty sustaining attention in tasks or play activities
3 - often does not seem to listen when spoken to directly
4 - often does not follow-through on instructions and fails to finish tasks
5 - often has difficulty organizing tasks and activities
6 - often avoids dislikes or is reluctant to engage in tasks that require sustained mental effort
7 - often loses things necessary for tasks or activities
8 - often is easily distracted by extraneous stimuli
9 - often forgetful in daily activities

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22
Q

What are the 9 hyperactivity symptoms of ADHD?

A

1 - often fidgets or taps hands/feet or squirms in seat
2 - often leaves seat in situations where remaining in seat is expected
3 - often runs about or climbs in situations where it is inappropriate
4 - often unable to play or engage in leisure activities quietly
5 - is often “on the go” or acting as if “driven by a motor”
6 - often talks excessively
7 - often blurts out the answer before a question has been completed
8 - often has difficulty waiting his or her turn
9 - often interrupts or intrudes on others

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23
Q

What are the specifiers for ADHD?

A
  • combined presentation
  • predominantly inattentive presentation
  • predominantly hyperactive/impulsive presentation
  • in partial remission
  • mild
  • moderate
  • severe
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24
Q

What are some differentials for ADHD?

A

Conduct disorder
Oppositional defiant disorder
Disruptive Mood dysregulation disorder
IDD
Intermittent explosive disorder

25
What are some common side effects of Ritalin?
Insomnia Loss of appetite Headaches GI upset Anxiety Irritability Raised BP and pulse rate Growth deceleration
26
What is the basic MOA of Buproprion
Dopamine and Norepinephrine reuptake inhibitor
27
What are two alternative stimulants to methylphenidate?
Dexamphetamine Lisdexamphetamine (prodrug)
28
What is the basic MOA of lisdexamphetamine?
This is dexamphetamine that has been complexed with lysine to make an inactive form and this is gradually broken down into the active forms inside red blood cells which acts similar to the extended release forms of methylphenidate
29
29
In which situations would atomoxetine be an appropriate choice? What warning should you give to parents?
Children who do not respond to stimulants Where there are dopaminergic adverse effects such as tics, anxiety and stereotypies. Suicidal thoughts and liver disease.
30
What are the DSM 5 criteria for Autism Spectrum Disorder?
A - persistent deficits in social communication and social interaction across multiple contexts, as manifested by the following, currently or by history (examples are illustrative, not exhaustive; see text): 1 - Deficits in social-emotional reciprocity, ranging, for example, from abnormal social approach and failure of normal back-and-forth conversation; to reduced sharing of interests, emotions, or affect; to failure to initiate or respond to social interactions. 2 - Deficits in nonverbal communicative behaviors used for social interaction, ranging, for example, from poorly integrated verbal and nonverbal communication, to abnormalities in eye contact and body language or deficits in understanding and use of gestures, to a total lack of facial expressions and nonverbal communication. 3 - Deficits in developing, maintaining, and understanding relationships, ranging, for example, from difficulties adjusting behavior to suit various social contexts; to difficulties in sharing imaginative play or in making friends; to absence of interest in peers. SPECIFY Severity - based on social communication impairments and restricted, repetitive patterns of behavior. (B) Restricted, repetitive patterns of behavior, interests, or activities, as manifested by at least two of the following, currently or by history (examples are illustrative, not exhaustive): 1 - Stereotyped or repetitive motor movements, use of objects, or speech 2 - Insistence on sameness, inflexible adherence to routines, or ritualized patterns of verbal and non-verbal behavior 3 - Highly restricted, fixated interests that are abnormal in intensity or focus 4 - Hyper- or hypo-reactivity to sensory input or unusual interest in sensory aspects of the environment. SPECIFY severity based on social communication impairments and restricted, repetitive patterns of behavior. C - Symptoms must be present in the early developmental period (may not become fully manifested until social demands exceed limited capacities, or may by masked by learned strategies in later life) D - Symptoms cause clinically significant impairment in social, occupational, or other important areas of current functioning. E - These disturbances are not better explained by intellectual disability or global developmental delay. ID and ASD frequently co-occur; to make comorbid diagnoses of autism spectrum disorder and ID, social communication should be below that of expected for general developmental level.
31
Quick and easy summary of the DSM5 criteria for ASD?
A - Deficits social communication and social interaction multiple contexts 1 - Social-emotional reciprocity 2 - Nonverbal communicative behaviors used for social interaction 3 - Developing, maintaining and understanding relationships B - Restrictive, repetitive patterns of behavior, interests or activities 1 - Stereotyped or repetitive motor movements, use of objects or speech 2 - Sameness, routines, patterns 3 - Fixated interests 4 - Hyper or hyporeactivity to sensory input C - present since early developmental period D - clinically significant impairment E - not better explained by ID or global developmental delay
32
What are the autism specifiers?
1. With or without accompanying intellectual impairment 2. With or without accompanying language impairment 3. Associated with a known medical or genetic condition or environmental factor 4. Associated with another neurodevelopmental, mental or behavioral disorder 5. With catatonia 6. Severity for both criterion A and B
33
What are the severity specifier levels for ASD?
Level 1 - Requiring support Level 2 - Requiring substantial support Level 3 - Requiring very substantial support
34
Which disorders from the DSM IV are now grouped under the single diagnosis of ASD?
Autistic disorder Asperger's disorder Childhood disintegrative disorder Pervasive developmental disorder
35
Comment on epidemiology and risk factors for ASD
Prevalence is about 1-2% Risk factors: Environmental: advanced parental age, extreme prematurity, in utero exposure to certain drugs or teratogens, low birth weight Genetic: 15% of cases of ASD appear to be associated with genetic mutation. Majority of these cases appear to be polygenic with hundreds of genetic loci making relatively small contributions Prognostic: presence or absence of associated intellectual developmental disorder and language impairment and mental health problems affects the prognosis. More common in boys than girls in a ratio of about 4:1
36
What are some features associated with ASD but are not strictly part of the DSM V criteria?
Intellectual and language impairment Theory-of-mind deficits (difficulty seeing the world from another's perspective) Executive function deficits Difficulty with central coherence - inability to understand context, overfocus on the details Motor deficits (odd gait, clumsiness, walking on tip toes) Self injury - head banging, biting the wrist
37
What are some differentials for ASD?
ADHD IDD Language and communication disorders Selective mutism Stereotypic movement disorder Retts Syndrome Anxiety disorders Personality disorders OCD SCZ
38
Co-morbidities with ASD
IDD Language disorders Anxiety, depression, ADHD Restrictive food intake disorder Epilepsy Constipation
39
Comment on the treatment of ASD
Varied according to age, level of impairment, co-morbidities, family, social situation Goal is to increase the patient's ability to function Speech therapy and OT Special school placement or grants (SW) Behavior and communication therapy Establishing a clear and consistent routine Family support and counseling Pharmacotherapy only indicated for certain reasons. Antipsychotics may be used in aggressive behavior or self-harming activity SSRIs can be used for motor stereotypies and anxiety Mood stabilizers such as Epilim, Carbamazepine can be used to limit troublesome behaviors. Referral to a subspecialist in Child or Adolescent Psychiatry is recommended in cases where management has proved difficult
40
What are some red flags for ASD in the early developmental period?
Deficits in eye tracking Lack of response to their name Milestone regression or plateau from approximately 17 months
41
Comment on the epidemiology of IDD
- more common in boys than girls - prevalence is approximately 1% of the general population - children with mild disorder represent the majority of cases constituting approximately 85% - children with moderate disorder constitute roughly 10% of those identified `
42
What is IQ?
Intelligence Quotient: score on a test that rates the person's intellectual function, or cognitive ability, as compared to the general population. IQ tests, for example the Wechsler Intelligence Scale for Children or the Wechsler Adult Intelligence Scales, use a standardized scale normed for particular populations, with a mean score of 100. On most tests, a score between 85 and 115 indicates average intelligence. An intellectual disability may be diagnosed when the IQ score is 2 or more standard deviations below the population mean, including a margin of error of measurement of 5 points. IQ score of 65-75.
42
Define IDD (Intellectual Developmental Disorder)
Characterized by deficits in general mental abilities and impairment in everyday adaptive functioning, with overall onset in early developmental period.
43
What is adaptive functioning?
The ability to adapt to the needs of everyday living and required conceptual, social and practical skills.
44
What are the DSM V criteria for IDD?
Intellectual disability (intellectual developmental disorder) is a disorder with onset during the developmental period that includes both intellectual and adaptive functioning deficits in conceptual, social, and practical domains. The following three criteria must be met: A. Deficits in intellectual functions, such as reasoning, problem solving, planning, abstract thinking, judgment, academic learning, and learning from experience, confirmed by both clinical assessment and individualized, standardized intelligence testing. B. Deficits in adaptive functioning that result in failure to meet developmental and sociocultural standards for personal independence and social responsibility. Without ongoing support, the adaptive deficits limit functioning in one or more activities of daily life, such as communication, social participation, and independent living, across multiple environments, such as home, school, work, and community. C. Onset of intellectual and adaptive deficits during the developmental period.
45
What are the specifiers for IDD?
Mild Moderate Severe Profound These are graded in each of 3 domains: - conceptual - social - practical
46
What are some of the intellectual functions that are affected in IDD?
Reasoning Problems solving Planning Abstract thinking Judgement Academic learning Learning from experience
47
What are some of the adaptive functions affected in IDD?
Failure to meet developmental and socio-cultural standards Limitation of activities of daily living such as: Communication Social participation Independent living skills
48
Describe the conceptual (academic) domain
Competence in memory language reading writing mathematic reasoning acquisition of practical knowledge problem solving judgement in novel situations
49
Describe the social domain
Awareness of other's thoughts, feelings, and experiences, empathy, interpersonal communication skills, friendship abilities, and social judgement.
50
Describe the practical domain
Involves learning and self-management across life settings, including personal care, job responsibilities, money management, recreation, self-management of behavior, and school and work task organization, among others.
51
What are some genetic risk factors for IDD?
Autosomal abnormalities such as down syndrome Sex chromosome abnormalities such as Kleinfelter's syndrome Other genetic abnormalities such as fragile X syndrome, prader-willi syndrome, phenyketonuria, retts disorder, neurofibromatosis, tuberous sclerosis, lesch-nyhan synndrome.
52
What are some prenatal acquired causes of IDD?
Infections - HIV, syphilis, rubella Toxins - FASD, prescribed medications Maternal illness (HPT, DM, HIV) Metabolic disorders
53
What are some perinatal causes of IDD?
Birth trauma/asphyxia Infections (HIV, gonorrhea) Enddocrine disorders Kernicterus Neonatal disorders Preterm or very low birth weight
54
What are some post-natal causes of IDD
Infections - TBM Head injury/trauma Seizure disorders Toxins Malnutrition Neurodegenerative disorders Some sociocultural factors: - poverty, social deprivation, lack of environmental stimulations, lack of opportunities to learn or practice skills
55
Which psychometric tests are most commonly used in SA for the assessment of IDD?
Grover Counter Test Vineland Adaptive Behavior Scales
56
What are the physical facial features of FAS?
Small head Small eye opening Low nasal bridge Flat midface Smooth philtrum Thin upper lip
57
What are some other features of FASD?
Low body weight Short height Sleep and sucking difficultiies Vision and hearing problems Delayed speech and language development Difficulty concentrating and short attention span Hyperactivity Learning disabilities Low IQ Poor coordination Poor reasoning and judgement Poor school performance Poor short-term memory