Autism Spectrum Disorder: Main Intendance Principles

Am Fam Physician. 2016 Dec xv;94(12):972-979A.

Patient information: Meet related handout on autism spectrum disorder, written by the authors of this article.

This clinical content conforms to AAFP criteria for continuing medical instruction (CME). See the CME Quiz Questions.

Writer disclosure: No relevant financial affiliations.

Article Sections

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Direction
  • Prognosis
  • References

Autism spectrum disorder is characterized past difficulty with social communication and restricted, repetitive patterns of behavior, interest, or activities. The Diagnostic and Statistical Manual of Mental Disorders, 5th ed., created an umbrella diagnosis that includes several previously dissever conditions: autistic disorder, Asperger syndrome, childhood disintegrative disorder, and pervasive developmental disorder not otherwise specified. There is bereft evidence to recommend screening for autism spectrum disorder in children 18 to 30 months of age in whom the disorder is not suspected; however, there is a growing body of bear witness that early intensive behavioral intervention based on applied behavior analysis improves cerebral ability, language, and adaptive skills. Therefore, early identification of autism spectrum disorder is important, and experts recommend the use of a validated screening tool at 18- and 24-calendar month well-child visits. Medications tin be used as adjunctive handling for maladaptive behaviors and comorbid psychiatric weather, but there is no single medical therapy that is effective for all symptoms of autism spectrum disorder. Prognosis is heavily afflicted past the severity of diagnosis and the presence of intellectual disability. Children with optimal outcomes receive earlier, more intensive behavioral interventions and less pharmacologic treatment.

Autism was first described by psychiatrist Leo Kanner in 1943 as a disorder in children who had bug relating to others and a loftier sensitivity to changes in their environment.one Although it appeared to be a rare disorder at that time, the prevalence of autism spectrum disorder (ASD) steadily increased. The Centers for Disease Control and Prevention's (CDC's) monitored network of 11 locations has described an autism prevalence of one in 68 children, with a male-to-female person ratio of 4.5-to-1.2 These data correlate with other studies beyond multiple nations and widely separated locations.3,4 The increase in ASD prevalence may exist partially attributed to the evolving diagnostic criteria prior to the publication of Diagnostic and Statistical Manual of Mental Disorders, fifth ed. (DSM-5), an increase in social awareness, and mandatory availability of treatments. Additionally, school-aged children with college functioning are being diagnosed with previously unrecognized ASD.five7 In 2013, DSM-5 created the umbrella diagnosis of ASD, consolidating iv previously separate disorders: autistic disorder, Asperger syndrome, childhood disintegrative disorder, and pervasive developmental disorder not otherwise specified.8

WHAT IS NEW ON THIS TOPIC: AUTISM SPECTRUM DISORDER

The U.S. Preventive Services Task Force concluded that electric current show is insufficient to assess the balance of benefits and harms of screening for autism spectrum disorder in young children for whom no concerns of autism spectrum disorder have been raised by their parents or a clinician.

In 2014, an Agency for Healthcare Research and Quality systematic review found a growing body of evidence that an practical behavior analysis–based early intensive behavioral intervention, delivered over an extended time frame, improves cognitive ability, language, and adaptive skills in autistic children.

More than than 80% of patients with autism spectrum disorder retain the aforementioned level of severity on echo assessment over an 8- to 10-year interval.

SORT: KEY RECOMMENDATIONS FOR Do

Clinical recommendation Testify rating References

Screening for autism spectrum disorder with a validated tool is recommended at 18- and 24-month well-kid visits to help with early detection.

C

33, 35

In children with autism spectrum disorder, an practical behavior analysis–based early on intensive behavioral intervention delivered over an extended time frame improves cognitive ability, language, and adaptive skills.

B

39

Cerebral behavior therapy is effective at lowering anxiety in older children with autism spectrum disorder who have an average or above-boilerplate IQ.

A

39

Melatonin helps manage sleep disorders, improves daytime behavior, and has minimal adverse effects in children with autism spectrum disorder.

A

25, 26


Etiology

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Management
  • Prognosis
  • References

Studies of the genetic heritability of ASD range from 40% to 90%, with most contempo estimates at virtually l% genetic liability. The genetic contribution to ASD occurs via a diverse group of mutational mechanisms along many biologic pathways.ix12 Additional risk is associated with environmental factors. Prenatal risks include advanced paternal or maternal historic period and maternal metabolic conditions, such as diabetes mellitus, hypertension, and obesity.13 In utero risks include valproate (Depacon) exposure, maternal infections, traffic-related air pollution, and pesticide exposure.13 Perinatal events such every bit low birth weight and preterm delivery increase the risk of ASD every bit a function of the greater overall risk of neurodevelopmental injury.13 Previous concerns for causality related to thimerosal-based vaccines have been conclusively disproven. A summary of this bear witness is bachelor to review with concerned parents on the CDC's website at http://world wide web.cdc.gov/vaccinesafety/concerns/autism.html.14

Clinical Presentation

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Management
  • Prognosis
  • References

Key diagnostic features of children with ASD include deficits in social advice and restricted, repetitive patterns of behavior, involvement, or activities. The diagnostic criteria be on a continuum of severity and functional impairment (Tabular array 1 and Table 2).8 Some signs and symptoms may emerge between six and 12 months of age. In many cases, a reliable diagnosis can exist fabricated by 24 months of age.1517 Social deficits and delays in spoken language are the most prominent features in children younger than three years. Joint attention is the power to coordinate ane's own attention between another person and a distant object to share interest. Neurotypical children respond to joint attention at 12 months of historic period and initiate it by 14 months of age. Those not demonstrating articulation attending afterward 15 months of age should exist evaluated for ASD. Parents may present with a business concern for hearing loss because children with ASD may not respond afterward multiple attempts to get their attention by calling their proper noun.xviii21

Table ane.

Diagnostic Criteria for Autism Spectrum Disorder

A. Persistent deficits in social communication and social interaction across multiple contexts, as manifested by the following, currently or past history (examples are illustrative, not exhaustive; come across text):

1. Deficits in social-emotional reciprocity, ranging, for instance, from abnormal social approach and failure of normal back-and-along chat; 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 instance, from poorly integrated exact and nonverbal communication; to abnormalities in eye contact and body linguistic communication or deficits in understanding and use of gestures; to a total lack of facial expressions and nonverbal communication.

iii. Deficits in developing, maintaining, and understanding relationships, ranging, for example, from difficulties adjusting beliefs to arrange various social contexts; to difficulties in sharing imaginative play or in making friends; to absence of interest in peers.

Specify electric current severity: Severity is based on social advice impairments and restricted, repetitive patterns of behavior (see Tabular array 2).

B. Restricted, repetitive patterns of behavior, interests, or activities, as manifested by at least ii of the following, currently or past history (examples are illustrative, not exhaustive; see text):

1. Stereotyped or repetitive motor movements, use of objects, or speech (e.g., simple motor stereotypies, lining up toys or flipping objects, echolalia, idiosyncratic phrases).

2. Insistence on sameness, inflexible adherence to routines, or ritualized patterns of verbal or nonverbal behavior (e.thousand., extreme distress at small-scale changes, difficulties with transitions, rigid thinking patterns, greeting rituals, need to take same route or eat same food every day).

3. Highly restricted, fixated interests that are abnormal in intensity or focus (e.g., strong attachment to or preoccupation with unusual objects, excessively confining or perseverative interests).

4. Hyper- or hyporeactivity to sensory input or unusual interest in sensory aspects of the environment (e.grand., apparent indifference to pain/temperature, adverse response to specific sounds or textures, excessive smelling or touching of objects, visual fascination with lights or movement).

Specify electric current severity: Severity is based on social advice impairments and restricted, repetitive patterns of behavior (run into Table 2).

C. Symptoms must be present in the early developmental period (but may not become fully manifest until social demands exceed limited capacities, or may be masked past learned strategies in later life).

D. Symptoms crusade clinically meaning impairment in social, occupational, or other important areas of electric current functioning.

Due east. These disturbances are not better explained by intellectual disability (intellectual developmental disorder) or global developmental delay. Intellectual disability and autism spectrum disorder frequently co-occur; to make comorbid diagnoses of autism spectrum disorder and intellectual disability, social communication should be below that expected for full general developmental level.

Notation: Individuals with a well-established DSM-Four diagnosis of autistic disorder, Asperger's disorder, or pervasive developmental disorder not otherwise specified should be given the diagnosis of autism spectrum disorder. Individuals who accept marked deficits in social communication, simply whose symptoms do not otherwise meet criteria for autism spectrum disorder, should be evaluated for social (pragmatic) communication disorder.

Specify if:

With or without accompanying intellectual impairment

With or without accompanying language impairment

Associated with a known medical or genetic condition or ecology cistron (Coding note: Use boosted code to identify the associated medical or genetic condition.)

Associated with another neurodevelopmental, mental, or behavioral disorder (Coding annotation: Use additional lawmaking[s] to identify the associated neurodevelopmental, mental, or behavioral disorder[s].)

With catatonia (refer to the criteria for catatonia associated with some other mental disorder, pp. 119–120, for definition) (Coding notation: Use additional code 293.89 [F06.ane] catatonia associated with autism spectrum disorder to signal the presence of the comorbid catatonia.)


Tabular array two.

Severity Levels for Autism Spectrum Disorder

Severity level Social communication Restricted, repetitive behaviors

Level 3

Severe deficits in exact and nonverbal social communication skills cause severe impairments in performance, very limited initiation of social interactions, and minimal response to social overtures from others. For case, a person with few words of intelligible speech who rarely initiates interaction and, when he or she does, makes unusual approaches to encounter needs only and responds to only very directly social approaches.

Inflexibility of behavior, extreme difficulty coping with change, or other restricted/repetitive behaviors markedly interfere with functioning in all spheres. Great distress/difficulty changing focus or action.

"Requiring very substantial back up"

Level ii

Marked deficits in exact and nonverbal social communication skills; social impairments apparent fifty-fifty with supports in place; limited initiation of social interactions; and reduced or aberrant responses to social overtures from others. For case, a person who speaks simple sentences, whose interaction is limited to narrow special interests, and who has markedly odd nonverbal communication.

Inflexibility of behavior, difficulty coping with change, or other restricted/repetitive behaviors appear ofttimes enough to be obvious to the coincidental observer and interfere with functioning in a multifariousness of contexts. Distress and/or difficulty changing focus or action.

"Requiring substantial support"

Level 1

Without supports in place, deficits in social communication crusade noticeable impairments. Difficulty initiating social interactions, and clear examples of singular or unsuccessful responses to social overtures of others. May announced to have decreased interest in social interactions. For instance, a person who is able to speak in total sentences and engages in communication but whose to-and-fro conversation with others fails, and whose attempts to brand friends are odd and typically unsuccessful.

Inflexibility of beliefs causes significant interference with functioning in one or more contexts. Difficulty switching betwixt activities. Bug of organization and planning hamper independence.

"Requiring support"


Delayed language development should heighten concerns. Language delay at 18 to 24 months of age without compensatory pointing or gesturing may help differentiate between ASD and expressive language delay. Echolalia used as the but linguistic communication in a child older than 24 months is associated with ASD.1821

A restricted range of involvement and repetitive behaviors are required for diagnosis of ASD. These may exist less apparent in younger children and exist on a continuum. Change in routine is oftentimes a significant challenge for children with ASD. Unusual play patterns may be noted, such equally focus on only part of a toy. Children with ASD may demonstrate stereotypic movements, such as mitt flapping, toe walking, or finger flicking virtually their eyes1821 (Tabular array 318). A confounding variable for diagnosis is that children with ASD may take several coexisting weather that touch on the severity of the harm (Table 4 2,18,2229).

Tabular array 3.

Clinical Probes for Autism Surveillance

Historic period Social skill probes* Language probes Restricted interests or repetitive behavior probes

9 months

(−) Turning and making eye contact when hearing his or her name called (social orienting)

(−) Blathering

(−) Taking turns vocalizing dorsum and forth

(−) Developing more varied vocalizations

(−) Waving "bye-bye" or raising arms to be lifted

(−) Responding to caregiver'south voice likewise equally environmental sounds

(+) Making unusual or high-pitched sounds

(+) Conveying an unusual comfort item (eastward.g., hard items such equally pens, sticks, rocks)

(+) Demonstrating unusual or intense attachments, stereotypic movements, cocky-injurious behaviors, or unusually severe temper tantrums with transitions or for no credible reason

(+) Engaging in repetitive behaviors, such as lining objects in a row

12 months

Echo social orienting probes from nine months

(−) Turning and looking if the caregiver or physician points at an object beyond the room and asks the kid to look (joint attention)

(−) Pointing to request an object (imperative pointing)

Repeat language probes from ix months

Echo restricted interests or repetitive behavior probes from nine months

15 months

Echo joint attending and imperative pointing probes from 12 months

(+) Repeating only what he or she hears (echolalia)

(+) Demonstrating regression in language milestones

Echo restricted interests or repetitive behavior probes from ix months

18 months

(−) Pointing for experience sharing (declarative pointing)

(−) Engaging in pretend play

Repeat language probes from 15 months

Repeat restricted interests or repetitive beliefs probes from 9 months

24 months

(−) Engaging in declarative pointing and showing of objects (joint attention)

Repeat language probes from 15 months

Repeat restricted interests or repetitive behavior probes from nine months


Table 4.

Conditions Associated with Autism Spectrum Disorder

Condition Frequency Characteristic

Psychiatric weather condition

63% to 96%

Loftier prevalence for anxiety, attending-deficit/hyperactivity disorder, depression22

Motor impairments

51% decreasing to 38% over time

Can include hypotonia, apraxia, clumsiness, toe walking, and gross motor delays; may improve through therapy or naturally over time23

Insomnia

50% to 80%

Commonly reported past parents; melatonin tin improve slumber; also important to accost sleep hygiene2427

Intellectual disability

twenty% to 50%

The Autism and Developmental Disabilities Monitoring Network classified 32% of children with autism spectrum disorder in the range of intellectual disability (IQ score ≤ lxx or the presence of an examiner'south statement of intellectual disability), 25% were classified in the borderline range (IQ = 71 to 85), and 44% were classified in the average or above boilerplate range (IQ > 85 or the presence of an examiner's statement of average or to a higher place average intellectual ability)2

Epilepsy

12% to 26%

Increased take a chance in older adolescents and patients with lower cognitive ability 28

Gastrointestinal problems

9% to 91%

Chronic constipation, diarrhea, and abdominal pain29


Screening

  • Abstruse
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Management
  • Prognosis
  • References

Screening tools help identify children who may need a more thorough diagnostic assessment. Formal screening is more effective than relying on clinical judgment alone.30 Notwithstanding, there are no randomized clinical trials assessing the effectiveness of screening for ASD in children three years or younger based on long-term outcomes. The American Academy of Family Physicians and the U.S. Preventive Services Job Strength establish insufficient evidence to make a recommendation for screening in children 18 to thirty months of age in whom no concerns of ASD are suspected.31,32 Routine developmental screening is suggested at nine-, xviii-, and 24- or 30-calendar month well-child visits.33,34 The American University of Pediatrics recommends targeted screening for ASD with a validated screening tool at xviii and 24 months of age for early identification.33,35 The Modified Checklist for Autism in Toddlers (1000-CHAT) is the well-nigh widely used screening tool. All the same, when used lone, it has poor positive predictive value and a high false-positive rate. The authors of that tool have since published the Modified Checklist for Autism in Toddlers–Revised, with Follow-Upwards (Yard-Conversation-R/F).36 The M-Conversation-R/F is a 2-stage parent-reported screening tool to assess the risk of ASD. The K-CHAT-R/F may exist downloaded free of charge for clinical, research, and educational purposes at http://mchatscreen.com/wp-content/uploads/2015/09/M-Chat-R_F.pdf. A positive screening test consequence or parental concerns at any age should be followed by a structured interview and, if indicated, a referral for diagnostic cess.33,35

Referral and Diagnosis

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Direction
  • Prognosis
  • References

Evaluation for ASD should include a comprehensive assessment, preferably past an interdisciplinary team33,35 (eTable A). The evaluation aims to definitively diagnose ASD, exclude conditions that mimic ASD, place comorbid conditions, and determine the child'south level of functioning. In the absence of a team, an private clinician with expertise in evaluating ASD (e.g., child psychologist, developmental pediatrician) is appropriate. The evaluation should include a consummate history and directly assessment of social communication skills and restricted, repetitive behaviors using a semi-structured tool (e.g., the Autism Diagnostic Observation Schedule, 2nd ed.) with standardized testing of language and cognitive skills. The diagnosis must exist confirmed using the DSM-5 criteria for ASD.3336

eTable A.

Interdisciplinary Assessment Team for Children with Autism Spectrum Disorder

Team member Role

Audiologist

Evaluates for hearing loss as contributor to developmental delay

Developmental pediatrician, kid neurologist, physician

Performs medical evaluation

Identifies and treats associated conditions

Geneticist and genetic counselor

Performs evaluation when an underlying medical condition or genetic syndrome is suggested by family history, examination, or clinical form

Counsels family unit on recurrence risk

Occupational therapist

Evaluates for fine and gross motor deficits

Evaluates for sensory processing deficits

Develops programme for treatment

Psychiatrist

Evaluates and treats associated psychiatric conditions and maladaptive behaviors

Psychologist

Administers cognitive or developmental testing

Administers diagnostic tools

Identifies associated psychiatric conditions and develops behavioral treatment plan

Social worker

Identifies family needs

Refers family unit to formal and informal support agencies and organizations

Spoken communication-language pathologist

Evaluates for expressive, receptive, and pragmatic linguistic communication deficits

Develops plan for treatment


Behavioral Treatments

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Management
  • Prognosis
  • References

Early intensive behavioral intervention is an immersive behavioral therapy for at least 25 hours per week that is recommended for preschool- to early on school–anile children with ASD.37 Applied behavior analysis is a cornerstone of most early intensive behavioral intervention approaches. Information technology seeks to teach new skills by reinforcing desirable behaviors, encouraging generalization of these skills, and decreasing undesirable behaviors. In a landmark written report published in 1987 based on the principles of practical behavior analysis, i-half of the patients assigned to handling were able to be placed in a neurotypical classroom and consummate first grade.38 In 2014, the Agency for Healthcare Enquiry and Quality updated a systematic review of existing and new randomized clinical trials and accomplice studies. This rigorous review constitute a growing body of evidence that an applied beliefs analysis–based early intensive behavioral intervention delivered over an extended time frame leads to improvement in cognitive ability, linguistic communication, and adaptive skills.39 These effects were clinically and statistically significant.

Strong show shows that cerebral behavior therapy essentially reduces anxiety symptoms in older children with ASD who accept average to above-boilerplate IQ.39 Several other behavioral interventions have also been examined but have limited evidence of benefit. Targeted play has led to improvements in early social advice skills.39 Social skills training has demonstrated brusk-term improvement in social skills and emotional recognition in school-aged children without intellectual dysfunction.39 Parent training and education programs amend linguistic communication skills and decrease disruptive behavior in children.39,40

Medical Management

  • Abstract
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Management
  • Prognosis
  • References

Although there is no medication available to treat the composite symptoms of ASD, medical management tin can be a beneficial adjunct. Medical treatment targets specific maladaptive behaviors for which intensive behavioral therapy has not been effective. Medical management may as well target comorbid diagnoses, such as feet disorders, attention-deficit/hyperactivity disorder (ADHD), and sleep disorders. Underlying atmospheric condition such as headaches, sinusitis, and gastrointestinal disorders tin can mimic or increase beliefs symptoms common to ASD. These conditions should exist ruled out before initiating targeted therapy.18,41

Aripiprazole (Abilify) and risperidone (Risperdal) are the but medications approved by the U.S. Food and Drug Administration for the treatment of ASD. These singular antipsychotics are approved for ASD-associated irritability and, in some trials, have proven beneficial for treating assailment, explosive outbursts, and self-injury.42,43 Aripiprazole is canonical for children six to 17 years of age.42 Risperidone is approved for children five to xvi years of historic period.43 Although these medications may provide some benefits, they must be weighed against serious potential adverse furnishings including sedation, weight gain, tremor, and extrapyramidal symptoms. Subspecialty referral should exist strongly considered for these treatments.

Stimulants such as methylphenidate (Ritalin) may evidence benign in children with comorbid ADHD, but treatment effects are less pregnant than in children without ASD and agin effects are more common. Non–stimulant-based treatments may have a larger office in children with comorbid ADHD and have shown fewer adverse furnishings.44

COMPLEMENTARY AND ALTERNATIVE TREATMENTS

Families of children with ASD are likely to try complementary and alternative treatments.24 A full list of treatments is beyond the scope of this article, but several therapies merit review. There is potent bear witness that melatonin helps manage sleep disorders, improves daytime beliefs, and has minimal adverse effects.2426 Massage therapy has been studied in several single-blinded randomized controlled trials that demonstrated benefits on ASD symptoms, slumber, language, repetitive behaviors, and feet. Massage can be performed past parents and has no evidence of harm.24 A recent large randomized controlled trial of therapeutic horseback riding showed improvements in irritability and hyperactivity in children, with secondary outcomes of improved social communication and new word acquisition.45

Vitamin Bhalf-dozen and magnesium in larger doses have been studied for use in children with ASD to improve beliefs, speech, and language. Results were equivocal, and at supratherapeutic doses, there is take a chance of neuropathy from vitamin Bsix and diarrhea from magnesium toxicity.24,46 Additional treatments that are not recommended considering they have not shown benefit across several randomized clinical trials include auditory integration grooming, facilitated communication, gluten- or casein-free diets, hyperbaric oxygen, and secretin.24,46,47

Prognosis

  • Abstruse
  • Etiology
  • Clinical Presentation
  • Screening
  • Referral and Diagnosis
  • Behavioral Treatments
  • Medical Direction
  • Prognosis
  • References

Effect markers for adults with ASD include independent living, employment, friendship, and marriage. Early studies institute that more one-half of infants with autism were institutionalized. A high percentage of patients were described as having poor or very poor outcomes.48 Contempo studies testify slightly improved results. One limited written report found that 12% of adults with ASD and an IQ of at least seventy lived independently.49

A 2022 study examined diagnostic stability equally a marker of prognosis. Results showed that more 80% of patients retain the same level of severity on repeat Autism Diagnostic Observation Schedule assessments over an viii- to 10-year interval, and but 15% were assigned to improving or worsening classes of ASD. Diagnostic severity and IQ levels were the best predictors of time to come part. The mildest grade of ASD was dropped from this analysis, which left a bias toward more severe presentations.50

A small percentage of children with a documented history of ASD no longer encounter diagnostic criteria and reach normal cerebral function. These children accomplish an optimal outcome. When compared with a high-functioning ASD cohort, children with optimal outcomes had before referrals and more intensive interventions with more practical behavior analysis therapy and fewer pharmacologic interventions.51

Some manufactures have reframed the lens of rating scales by incorporating the patient's stance equally well as the parent'due south or caregiver's rating. These studies reflect a higher percent of positive outcomes for patients with ASD based on the person-environment fit. Increasing daytime recreational activities and community inclusion improved the person-environment fit, resulting in higher levels of satisfaction. Additional studies that consider the unabridged autistic spectrum are needed to help analyze individual prognosis.48

Data Sources: Essential Evidence Plus was reviewed. References from the previous AFP commodity on ASD were reviewed. The Centers for Disease Command and Prevention website was reviewed for content and references. Additional searches were performed on PubMed, Ovid, and Google Scholar. Search terms included autism and autism spectrum disorder, combined with screening, prevalence, global prevalence, diagnosis, genetics, guidelines, ABA, behavioral therapy, risperidone, aripiprazole, selective serotonin reuptake inhibitor, tricyclic antidepressants, attention-deficit/hyperactivity disorder, ADHD, comorbidities, complementary and alternative medicine, Bvi, vitamin, melatonin, and prognosis. Search references were limited to 2010 and greater first; however, if express options returned, the timeline was expanded to older references. Certain articles contained reviews of RCTs, and these references were as well straight searched. Search dates: August to Oct 2015. Additional searches were made from March to April 2022 adding the terms severity and environment(al) take chances factors.

The authors thank Michael Arnold, Medico; Rob Lennon, Doctor, JD; and Danielle Sanchack, PsyD, for their back up via review and edit of the text. They also thank Susan Ebbinghouse, medical librarian, for facilitating the literature search.

The views expressed in this commodity are those of the authors and practise non necessarily reverberate the official policy or position of the Department of the Navy, the Department of Defense, or the U.Southward. government.

To encounter the full article, log in or purchase access.

The Authors

show all author info

KRISTIAN Eastward. SANCHACK, CDR, MC, USN, is the plan manager of the Family Medicine Residency Plan at Naval Hospital Jacksonville (Fla.)....

CRAIG A. THOMAS, LT, MC, USN, is a staff physician at Naval Hospital Pensacola (Fla). At the time the article was submitted, Dr. Thomas was a 3rd-yr resident in the Family Medicine Residency Program at Naval Infirmary Jacksonville.

Accost correspondence to Kristian East. Sanchack, CDR, MC, USN, Naval Hospital Jacksonville, Family unit Medicine Clinic, 2080 Child St., Jacksonville, FL 32214 (e-post: Kristian.eastward.sanchack.mil@mail.mil). Reprints are non bachelor from the authors.

Author disclosure: No relevant fiscal affiliations.

REFERENCES

evidence all references

1. Kanner 50. Autistic disturbances of affective contact. Nervous Kid. 1943;ii:217–250. ...

2. Christensen DL, Baio J, Braun KV, et al. Prevalence and characteristics of autism spectrum disorder among children aged 8 years - Autism and Developmental Disabilities Monitoring Network, 11 sites, Us, 2012. MMWR Surveill Summ. 2016;65(3):1–23.

three. Boyle CA, Boulet S, Schieve LA, et al. Trends in the prevalence of developmental disabilities in US children, 1997–2008. Pediatrics. 2011;127(half dozen):1034–1042.

four. Elsabbagh Chiliad, Divan G, Koh YJ, et al. Global prevalence of autism and other pervasive developmental disorders. Autism Res. 2012;5(iii):160–179.

5. Blenner S, Augustyn M. Is the prevalence of autism increasing in the U.s.a.? BMJ. 2014;348:g3088.

6. Zylstra RG, Prater CD, Walthour AE, Aponte AF. Autism: why the ascent in rates? J Fam Pract. 2014;63(6):316–320.

7. Blumberg SJ, Bramlett Doc, Kogan MD, Schieve LA, Jones JR, Lu MC. Changes in prevalence of parent-reported autism spectrum disorder in schoolhouse-aged U.S. children: 2007 to 2011–2012. Natl Health Stat Report. 2013;(65):1–xi.

viii. American Psychiatric Clan. Diagnostic and Statistical Transmission of Mental Disorders. 5th ed. Washington, DC: American Psychiatric Association; 2013.

9. Colvert E, Tick B, McEwen F, et al. Heritability of autism spectrum disorder in a Great britain population-based twin sample. JAMA Psychiatry. 2015;72(5):415–423.

10. Talkowski ME, Minikel EV, Gusella JF. Autism spectrum disorder genetics: diverse genes with diverse clinical outcomes. Harv Rev Psychiatry. 2014;22(ii):65–75.

xi. Ozonoff S, Young GS, Carter A, et al. Recurrence risk for autism spectrum disorders: a Baby Siblings Research Consortium study. Pediatrics. 2011;128(3):e488–e495.

12. Hallmayer J, Cleveland Due south, Torres A, et al. Genetic heritability and shared environmental factors amongst twin pairs with autism. Curvation Gen Psychiatry. 2011;68(11):1095–1102.

13. Mandy W, Lai MC. Almanac research review: the role of the environment in the developmental psychopathology of autism spectrum status. J Child Psychol Psychiatry. 2016;57(3):271–292.

14. Centers for Disease Control and Prevention. Vaccine safety: vaccines do non cause autism. http://www.cdc.gov/vaccinesafety/concerns/autism.html. Accessed September 16, 2015.

15. Charman T, Baird G. Practitioner review: diagnosis of autism spectrum disorder in 2- and 3-year-quondam children. J Child Psychol Psychiatry. 2002;43(3):289–305.

xvi. Lord C, Risi S, DiLavore PS, Shulman C, Thurm A, Pickles A. Autism from 2 to 9 years of age. Arch Gen Psychiatry. 2006;63(vi):694–701.

17. Guthrie W, Swineford LB, Nottke C, Wetherby AM. Early on diagnosis of autism spectrum disorder: stability and modify in clinical diagnosis and symptom presentation. J Child Psychol Psychiatry. 2013;54(five):582–590.

18. Carbone PS, Farley M, Davis T. Master care for children with autism. Am Fam Physician. 2010;81(4):453–460.

19. Johnson CP. Recognition of autism before age 2 years. Pediatr Rev. 2008;29(3):86–96.

20. Blenner S, Reddy A, Augustyn M. Diagnosis and management of autism in childhood. BMJ. 2011;343:d6238.

21. Baird G, Douglas HR, Spud MS. Recognising and diagnosing autism in children and young people: summary of Overnice guidance. BMJ. 2011;343:d6360.

22. van Steensel FJ, Bögels SM, de Bruin EI. Psychiatric comorbidity in children with autism spectrum disorders: a comparison with children with ADHD. J Child Fam Stud. 2013;22(3):368–376.

23. Ming Ten, Brimacombe G, Wagner GC. Prevalence of motor harm in autism spectrum disorders. Brain Dev. 2007;29(nine):565–570.

24. Lofthouse N, Hendren R, Hurt E, Arnold LE, Butter E. A review of complementary and culling treatments for autism spectrum disorders. Autism Res Treat. 2012;2012:870391.

25. Garstang J, Wallis M. Randomized controlled trial of melatonin for children with autistic spectrum disorders and sleep problems. Child Care Wellness Dev. 2006;32(5):585–589.

26. Rossignol DA, Frye RE. Melatonin in autism spectrum disorders: a systematic review and meta-assay. Dev Med Child Neurol. 2011;53(9):783–792.

27. Brahm Northward, Stewart D. Autism spectrum disorders and slumber disturbances in a pediatric patient. Mental Health Clinician. 2014;4(2):47–51.

28. Viscidi EW, Triche EW, Pescosolido MF, et al. Clinical characteristics of children with autism spectrum disorder and co-occurring epilepsy. PLoS I. 2013;eight(vii):e67797.

29. Hsiao EY. Gastrointestinal problems in autism spectrum disorder. Harv Rev Psychiatry. 2014;22(ii):104–111.

thirty. Miller JS, Gabrielsen T, Villalobos 1000, et al. The each child study: systematic screening for autism spectrum disorders in a pediatric setting. Pediatrics. 2011;127(5):866–871.

31. American Academy of Family Physicians. Clinical Preventive Service Recommendation. Autism spectrum: children (anile xviii to thirty months). https://www.aafp.org/patient-intendance/clinical-recommendations/all/autism-children.html. Accessed May 14, 2016.

32. Siu AL, Bibbins-Domingo K, Grossman DC, et al. Screening for autism spectrum disorder in young children: U.S. Preventive Services Task Force recommendation statement. JAMA. 2016;315(7):691–696.

33. Quango on Children With Disabilities; Section on Developmental Behavioral Pediatrics; Bright Futures Steering Commission; Medical Home Initiatives for Children With Special Needs Project Informational Commission. Identifying infants and young children with developmental disorders in the medical dwelling: an algorithm for developmental surveillance and screening [published correction appears in Pediatrics. 2006;118(4): 1808–1809]. Pediatrics. 2006;118(one):405–420.

34. Volkmar F, Siegel M, Woodbury-Smith One thousand, King B, McCracken J, Land M; American Academy of Child and Adolescent Psychiatry Commission on Quality Bug. Practice parameter for the cess and treatment of children and adolescents with autism spectrum disorder [published correction appears in J Am Acad Kid Adolesc Psychiatry. 2014;53(8): 931]. J Am Acad Child Adolesc Psychiatry. 2014;53(2):237–257.

35. Zwaigenbaum L, Bauman ML, Fein D, et al. Early on screening of autism spectrum disorder: recommendations for practice and enquiry. Pediatrics. 2015;136(suppl 1):S41–S59.

36. Robins DL, Fein D, Barton Yard. Modified checklist for autism in toddlers, revised, with follow-up (K-Conversation-R/F). http://mchatscreen.com/wp-content/uploads/2015/09/Thousand-CHAT-R_F.pdf. Accessed Apr 15, 2016.

37. Maglione MA, Gans D, Das L, Timbie J, Kasari C; Technical Expert Panel; HRSA Autism Intervention Research–Behavioral Network. Nonmedical interventions for children with ASD: recommended guidelines and farther research needs. Pediatrics. 2012;130(suppl 2):S169–S178.

38. Lovaas OI. Behavioral treatment and normal educational and intellectual operation in young autistic children. J Consult Clin Psychol. 1987;55(1):3–nine.

39. Weitlauf As, McPheeters ML, Peters B, et al. Therapies for children with autism spectrum disorder: behavioral interventions update. AHRQ Comparative Effectiveness Reviews. Report no. xiv-EHC036-EF. Rockville, Doctor.: Agency for Healthcare Research and Quality; 2014.

40. Bearss Yard, Johnson C, Smith T, et al. Consequence of parent preparation vs parent education on behavioral problems in children with autism spectrum disorder: a randomized clinical trial [published correction appears in JAMA. 2016;316(3):350]. JAMA. 2015;313(15):1524–1533.

41. Dove D, Warren Z, McPheeters ML, Taylor JL, Sathe NA, Veenstra-VanderWeele J. Medications for adolescents and immature adults with autism spectrum disorders: a systematic review. Pediatrics. 2012;130(4):717–726.

42. Ching H, Pringsheim T. Aripiprazole for autism spectrum disorders (ASD). Cochrane Database Syst Rev. 2012;(5):CD009043.

43. Jesner Bone, Aref-Adib Grand, Coren Due east. Risperidone for autism spectrum disorder. Cochrane Database Syst Rev. 2007;(1):CD005040.

44. Davis NO, Kollins SH. Treatment for co-occurring attention deficit/hyperactivity disorder and autism spectrum disorder. Neurotherapeutics. 2012;9(3):518–530.

45. Gabriels RL, Pan Z, Dechant B, Agnew JA, Skirt N, Mesibov G. Randomized controlled trial of therapeutic horseback riding in children and adolescents with autism spectrum disorder. J Am Acad Child Adolesc Psychiatry. 2015;54(seven):541–549.

46. Nye C, Brice A. Combined vitamin B6-magnesium treatment in autism spectrum disorder. Cochrane Database Syst Rev. 2005;(iv):CD003497.

47. Kendall T, Megnin-Viggars O, Gould North, Taylor C, Burt LR, Baird G; Guideline Development Group. Direction of autism in children and immature people: summary of NICE and SCIE guidance. BMJ. 2013;347:f4865.

48. Henninger NA, Taylor JL. Outcomes in adults with autism spectrum disorders: a historical perspective. Autism. 2013;17(1):103–116.

49. Farley MA, McMahon WM, Fombonne Due east, et al. Xx-year outcome for individuals with autism and average or near-average cerebral abilities. Autism Res. 2009;2(2):109–118.

l. Gotham M, Pickles A, Lord C. Trajectories of autism severity in children using standardized ADOS scores. Pediatrics. 2012;130(5):e1278–e1284.

51. Orinstein AJ, Helt M, Troyb E, et al. Intervention for optimal upshot in children and adolescents with a history of autism. J Dev Behav Pediatr. 2014;35(four):247–256.

Copyright © 2022 by the American Academy of Family Physicians.
This content is endemic by the AAFP. A person viewing it online may make one printout of the material and may use that printout only for his or her personal, non-commercial reference. This fabric may not otherwise be downloaded, copied, printed, stored, transmitted or reproduced in any medium, whether at present known or later on invented, except as authorized in writing past the AAFP. Contact afpserv@aafp.org for copyright questions and/or permission requests.

MOST RECENT ISSUE

Feb 2022

Access the latest event of American Family unit Physician

Read the Effect


Email Alerts

Don't miss a single upshot. Sign up for the free AFP email tabular array of contents.

Sign Upwards Now