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Autism Spectrum Disorders

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Presentation on theme: "Autism Spectrum Disorders"— Presentation transcript:

1 Autism Spectrum Disorders
Judith A. Axelrod, M.D. Developmental-Behavioral Pediatrician Square One Specialists in Child and Adolescent Development Professor of Pediatrics University of Louisville School of Medicine

2 Disclosures A. “I have no relevant financial relationships with the manufacturers of any commercial products and/or provider of commercial services discussed in this CME activity.” B. “I do not intend to discuss an unapproved/investigative use of a commercial product/device in my presentation.”


4 Autism Spectrum Disorder
Described in 1943 by Dr. Leo Kanner Study of 11 children Early infantile autism Characterized by social differences Dr. Hans Asperger Described milder form of disorder Asperger syndrome

5 Autism Spectrum Disorder/ Pervasive Developmental Disorders
DSM-IV-TR (APA, 2000) 5 disorders under the PDD umbrella Qualitative impairments of communication Qualitative impairments of social skills Restricted, repetitive, and stereotyped patterns of behavior, interests, and activities

6 PDD Umbrella Asperger’s Autism Childhood Disintegrative N.O.S. Rett’s

7 Autism Spectrum Disorders
Social communication skills<cognitive skills PDD-NOS Sub-threshold Autism Asperger Syndrome Social interaction deficits and restricted interests Child Disintegrative Disorder Normal development for first 2 years of life Rett Syndrome

8 Social Communication Disorders
Autism Asperger’s Disorder Pervasive Developmental Disorder, NOS

9 Development of social communication
Within the first and second year of life children develop: Sense of self Capacity to judge form evidence Ability to integrate ideas from past experience Ability to appreciate psychological state of another person

10 Social communication Teasing Helping Comforting

11 Development of social communication
During the first and second year of life children Show interest in other people Show curiosity about feelings and thoughts

12 Pretend Make believe play

13 Social Communication requires:
Joint attention Effective reciprocity or emotional sharing The ability to realize that another person has thoughts and ideas similar to you

14 Theory of Mind Understanding the desires of another
Understanding the emotional state of another person Having the ability to figure out what a person’s intentions are Knowledge that what you are thinking can be conveyed to others through nonverbal means

15 Case study Joseph is a 2 ½ year old male who lives “in his own world”. During his first year of life he was playful and interactive. He spoke single words at 8 months. At 15 months he had a 9-15 word vocabulary. At 18 months an insidious regression of his language and communication skills began. By 2 years, Joseph spoke 4 words; he did not give eye contact. He did not share his joys.


17 Autism Spectrum Disorder
Neurobiological disorder Inconsistency of development Expression of symptoms varies with age and developmental level of person

18 Autism Universally considered a neurobiological disorder
No specific etiology Likely complex etiology Genetics Environmental factors Associated conditions

19 Genetic Aspects 5% recurrence risk
Concordance in 90% monozygotic twins Concordance in <10% dizygotic twins Mild associations with genetic syndromes Fragile X syndrome (3%) Tuberous Sclerosis (2-5%)

20 Associated with Autism perhaps by chance
Neurofibromatosis Cornelia de Lange Syndrome Angelman Syndrome Down Syndrome Intrauterine exposure to: Rubella CMV Varicella

21 Autism Facts Common (1:160) More common in boys
Occurs across all populations Cause is not known Considered a spectrum disorder

22 Associated medical conditions
Mental retardation Seizures Two phases of presentation Early childhood Late adolescence Linked to evidence of brain dysfunction/damage

23 Autism through the lifespan
Infants and toddlers Easy going “too good” baby Baby with sensory processing abnormalities Difficulty regulating behavior Overexcited, fussy, crying inconsolably

24 Infants and Toddlers Poor imitation Abnormality in eye contact
Under responsive to people Bland facial expressions with less smiling High tolerance to pain, cold, or heat Hypersensitive to taste, touch


26 Early Indicators Lack of pretend play No point to express interest
Poor joint attention Inefficient use of eye gaze Communication deficits Poor response to name

27 Other Indicators Speech delay Acts as if cannot hear well/ignores
In own world Abrupt decline in use of words mos. Repetitive play Unusual play/TV preferences


29 Early Childhood Typically most obvious signs and symptoms of Autism
Ages 4-5 years standard age in determining severity of Autism Repetitive and stereotypic behaviors emerge and peek at 5-7 years Special interests and sameness emerge Obsessions and compulsions

30 Common Features Repeated body movements/stereotypies
Hand flapping, pacing, unusual inspection, opening and shutting doors, staring at lights Attachments to objects Resistance to change Difficulties with transitions Aggression Self injurious behaviors (rare)

31 Common Features, continued
Sensory issues Difficulty with generalization Overselectivity Splinter skills


33 Middle Childhood Subtypes emerge Stereotypies diminish
Aloof Passive Active but odd Stereotypies diminish Divergence of population with language acquisition and developing cognitive skills

34 Associated findings Clumsiness Dyspraxia
Sensory processing difficulties Hypotonia Joint laxity Toe walking

35 Adolescents Continued difficulty with social and pragmatic language
Some seek to develop social skills Refinement of special interests Increased anxiety, some have deterioration but regain later

36 Adults Vastly differing outcomes
1/3 able to care for self, achieve some independence, have some friends, live independently or with support, work Nearly 70% have fair to good language Marriage is rare

37 Adults continued About 45% have poor outcome
Dependent on family or living in residential setting Major seizures, behavioral problems, continued dependency Increased rates of depression and anxiety

38 PDD Umbrella Asperger’s Autism Childhood Disintegrative N.O.S. Rett’s

39 Asperger syndrome continued
No apparent cognitive impairment No apparent receptive or expressive language impairment

40 Asperger Syndrome Impairment in social interaction
Restricted, repetitive, and stereotyped patterns of behavior

41 Ian is a 12 yr old who is described as a bright,
witty, intelligent youngster who talks constantly. He is curious and persistent. He is anxious, argumentative and has trouble with transitions. Ian has a history of repetitive behaviors described as facial grimacing, finger rituals. He has unusual speech patterns. Adults are more tolerant of him than same aged peers. He has few friends. Parents report that Ian is an only child because life is very difficult with him and he requires much time and effort. Ian has Asperger Disorder.

42 Asperger Syndrome Normal language development
No delay in receptive and expressive language milestones Language skills are defined as normal especially in early life No delay in cognition or adaptive behaviors in early life

43 Asperger Syndrome Qualitative impairments in social interaction
1. Impaired nonverbal behavior Poor eye gaze Poor use of facial expression Poor use of gestures to regulate interaction

44 Asperger Syndrome Qualitative impairments in social interaction
Impaired social communication Rigid Excessive or tedious Pedantic Narrow range of interests

45 Nonverbal Learning Disorders
Some experts believe that NLD and Asperger Syndrome are one and the same Clinical presentation is similar with Asperger Syndrome

46 NLD Characteristics Composed of a constellation of skill deficits that impact all aspects of living. Poor nonverbal problem solving Significant discrepancy between verbal and nonverbal cognitive abilities Much lower nonverbal than verbal

47 NLD continued Difficulty correctly processing and attending to tactile and visual modalities. Psychomotor coordination difficulties or physical awkwardness. Specific weaknesses in social perception and social judgment. Significant problems in adapting to new or complex situations.

48 NLD Risks Social withdrawal and social isolation which may worsen as they get older. Predisposed to have internalizing psychological disorders such as depression and anxiety. Often diagnosed (misdiagnosed?) with ADHD due to poor organizational skills, poor planning and impulse control difficulties. Perceptual difficulties of NLD can interfere with reading, math, spelling.

49 PDD Umbrella Asperger’s Autism Childhood Disintegrative N.O.S. Rett’s

50 PDD:NOS/Atypical Autism
Criteria not met for another ASD/PDD Impairments in social interaction WITH Impairments in verbal and nonverbal interactions OR stereotyped behaviors, interests or activities

51 Autism Spectrum Disorders: Associated problems
Attention problems Impulse control difficulties Sleep problems Obsessive compulsive behaviors Self-injurious behaviors Tics Depression Anxiety

52 PDD Umbrella Asperger’s Autism Childhood Disintegrative N.O.S. Rett’s

53 Childhood Disintegrative Disorder
Normal development 1st 2 years Significant loss of skills (before 10 years) in at least 2 areas: Expressive or receptive language Social skills or adaptive behavior Bowel or bladder control Play Motor skills

54 Childhood Disintegrative con’t
Abnormalities of functioning in at least 2 of the following areas: Qualitative impairment in social interaction Qualitative impairments in communication Restricted, repetitive, and stereotyped patterns of behavior, interests, and activities

55 Level One Assessment A screening
Developmental surveillance by providers performed at every well child visit A starting level evaluation for children referred for developmenal difficulties

56 Level One, continued Use broad-band screening questionnaires
Listen to parental concerns about child’s development Ask specific developmental probes regarding speech-language, social, and behavioral development

57 Examples of Parent Concerns
Acts as if cannot hear well Not talking like should Acts as if in his own world A loner Does same play over and over Odd interests

58 Absolute Indicators for Level Two Evaluation
No babbling by 12 months No gesturing by 12 months No single words by 16 months No 2-word spontaneous phrases by 24 months Any loss of any language or social skills at any age

59 Diagnosis and Assessment of Autism
Level Two Evaluation Diagnosis and Assessment of Autism

60 Diagnostic Toolbox Input from team Input from parents
Input from school Direct observation Cognitive measures Adaptive measures Diagnostic measures Clinical judgment

61 Cognitive Measures No cognitive pattern confirms or excludes a diagnosis of Autism (but may help in differentiation of Asperger Syndrome or Nonverbal Learning Disorder). Essential for educational planning Provides a full range of standard scores (floor)

62 Adaptive Measures Essential in the diagnosis of mental retardation
Provides information regarding social and communication functioning Example: Vineland Adaptive Behavior Scales

63 Input from Speech-Language Pathologist
Measures of receptive language Measures of expressive language, including both communicative means (how) and communicative functions (why) Measures/observations of play and social skills Pragmatics

64 Medical Diagnostic Measures
Comprehensive Physical and Neurological examination Laboratory evaluation High resolution chromosome analysis DNA for Fragile X Syndrome Thyroid function testing Plasma amino acid screen Urine Organic acids Comparative Genomic Hybridization Study

65 Medical Diagnostic Measures
MRI of brain Sleep deprived EEG

66 Screening and Diagnostic Measures
Various standardized questionnaires and structured interviews are part of a thorough assessment for ASD. Standardized measures can help by providing information regarding: Symptoms Primary domains of deficits Severity of symptoms / deficits

67 Screening and Diagnostic Measures
Autism Diagnostic Interview – Revised Autism Diagnostic Observation Schedule Childhood Asperger Syndrome Test Checklist for Autism in Toddlers Social Communication Questionnaire Gilliam Autism Rating Scale Childhood Autism Rating Scale


69 Intervention Early identification Speech-Language Therapy
Occupational Therapy Physical Therapy Interaction with same aged normal peers

70 Intervention Development of a communication system
Picture Exchange Communication System (PECS) Visual schedules Visual cues Social skills training Social stories Play groups

71 Intervention Analysis of behavior for appropriate behavioral intervention (e.g., ABA) Intensive behavioral approach Goal is to teach children how to learn by focusing on building blocks of development Developmental, individual-difference, relationship-based (DIR) / Floortime Use of play to build relatedness (e.g., warmth, pleasure, meaningful communication, creativity)


73 Educational Intervention
Teachers need specific training in the education of children with Autism Intensive Speech-Language therapy Collaboration between therapist, parents, and teacher is critical Promote behaviors with positive behavioral strategies Use of visual and manipulative educational materials

74 Educational Intervention
Visual communication aids Visual schedule, chart of daily activities Social skills training Buddy system Social stories Positive reinforcement for positive behaviors

75 Key Issues for Intervention
Early intervention is critical Communication Social Skills Development Gradual increase in prosocial behaviors Development of self & awareness of others

76 Medication There are no medications that “cure”
Autism. Medication should be used for specific symptoms.

77 Specific symptoms for medication
Anxiety Obsessive-Compulsive behaviors Depression Self abusive behaviors Aggression Sleep deprivation

78 Medications Used Selective Sertonin Reuptake Inhibitors (SSRI)
Prozac (Fluoxetine) Zoloft (Sertraline) Celexa (Citalopram) Neuroleptics Risperdal(Risperidone) Zyprexa (Olanzapine) Geodon (Ziprasidone) Abilify (Aripiprazole)

79 Medications Used Continued
Alpha adrenergic agonists Clonidine Guanfacine Mood stabilizers Depakote (Valproic acid) Tegretol (Carbamazepine) Antiopiod Naltrexone

80 Alternative Therapies unproved
Gluten-Casein Free Diet Based on toxicologic opioid hypothesis Nutritional Supplements Based on hypothesis that minerals and/or vitamins improve “autistic behaviors” Immune globulin therapy Based on assumption Autism is an autoimmune abnormality Secretin Intravenous hormone that stimulates pancreas and liver to manage “autistic behaviors” Chelation Based on hypothesis that mercury exposure is cause of Autism

81 Autism and learning The child with autism can learn skills for
communication, can develop the skills for emotional and social relationships, and can learn to diminish stereotypical behavior. No one particular program works for all children.

82 Autism Autism is a lifelong developmental disorder.

83 Autism There is no “cure” for Autism.
Prognosis is dependent on cognition and the ability to develop social skills. Early intervention is critical and optimizes treatment.

84 The following organizations can offer information and support:
Autism Society of America (ASA) Woodmont Avenue, Suite 300, Bethesda, Maryland , AUTISM, National Autism Hotline, P.O. Box 507, Huntington, West Virginia , (304) , fax (304) Autism Research Institute, Adams Avenue, San Diego, California 92116, (619) , fax MAAP, More Advanced individuals with Autism, Asperger’s syndrome and Pervasive Developmental Disorder,

85 Information and Support
Autism Society of Kentuckiana P.O. Box 90, Pewee Valley, KY 40056, Autism Society of the Bluegrass Shady Lane, Lexington, KY , (859) Indiana Resource Center for Autism Susan Pieples, President P.O. Box 1064, Carmel, Indiana (317) ,

86 Information and Support
University of Louisville Autism Center at Kosair Charities, 1405 E. Burnett Avenue, Louisville KY 40217, (502) FEAT of Louisville 1100 East Market Street Louisville KY (502)

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