Condition

Disinhibited Social Engagement Disorder

Editors: Lucy Ogbu-Nwobodo MD, MS, MAS; Esther Jolanda van Zuuren MD; Alexander Rae-Grant MD, FRCPC, FAAN

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Background Information

Description

  • disinhibited social engagement disorder (DSED) is a trauma- and stress-related disorder affecting young children with a history of severely insufficient caregiving, and is characterized by aberrant behavior patterns demonstrating lack of hesitation in interactions with unfamiliar adults ,
  • characteristic traits of DSED include,
    • reduced or absent reticence when approaching strangers
    • overly familiar verbal or physical behavior
    • diminished or absent checking in with caregiver after venturing away (even in unfamiliar settings)
    • willingness to "go off with" an unfamiliar adult with minimal or no hesitation
  • DSED may occur and persist in children,
    • without attachment
    • with aberrant attachment
    • with healthy attachments to subsequent foster or adoptive parents

Also Called

  • disinhibited social behavior (key feature of disinhibited social engagement disorder) is sometimes also referred to as
    • disinhibited attachment
    • indiscriminate friendliness
    • over-friendliness
    • Reference - Clin Child Fam Psychol Rev 2013 Jun;16(2):101

Types

  • diagnosis by Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) separates disinhibited social engagement disorder (DSED) and reactive attachment disorder (RAD) into distinct conditions
    • previous versions of DSM considered DSED the "disinhibited" subtype of RAD, while what is currently RAD in DSM-5 was considered the "withdrawn/inhibited" subtype of RAD
    • both disorders arise in children with early experiences that limit their ability to form selective attachments including social neglect, frequent changes in caregivers, or deprivation that may occur in institutional settings
    • rationale of DSED and RAD separation in DSM-5
      • both disorders have distinct presentations (though some children present with symptoms from both disorders), response to treatment, associated conditions, and prognoses
      • unlike RAD (which remits with formation of healthy attachment to adoptive or foster parent), DSED may be present in children without attachment, with aberrant attachment, or with healthy attachments to subsequent caregivers; diagnosis of DSED as an attachment disorder has been questioned due to irrelevance of attachment behaviors to caregiver
    • mixed-type attachment disorder refers to an attachment disorder with symptoms of both RAD and DSED
  • specifiers

Epidemiology

Who Is Most Affected

  • young children with history of institutional rearing, particularly those adopted into another country from which they were born (J Child Psychol Psychiatry 2011 Aug;52(8):819)

Incidence/Prevalence

    DynaMed Commentary

    Population-based epidemiological studies have not been conducted to accurately estimate incidence or prevalence of disinhibited social engagement disorder based on the Diagnostic and Statistical Manual of Mental Disorders, fifth ed. (DSM-5) criteria. Estimates below are from smaller cohort studies and many use the DSM-IV definition of reactive attachment disorder (RAD) disinhibited subtype that encompasses disinhibited social engagement disorder (DSED) which is considered a distinct disorder in DSM-5.

  • exact prevalence estimates unknown due to lack of epidemiological studies on DSED, but the condition is generally reported in < 20% of children with history of severe neglect subsequently placed in foster care or raised in institutions
  • STUDY SUMMARY
    disinhibited attachment disorder reported in 2% of community-based survey of children aged 1-5 years in Romania
    CROSS-SECTIONAL STUDY: Eur Child Adolesc Psychiatry 2011 Oct;20(10):527

  • prevalence in at-risk populations
    • STUDY SUMMARY
      reactive attachment disorder disinhibited subtype prevalence reported to range from 17% to 18% in children aged 2-4 years residing in institutions in Romania
      RANDOMIZED TRIAL: J Am Acad Child Adolesc Psychiatry 2011 Mar;50(3):216

    • STUDY SUMMARY
      12%-19% of children aged 2-7 years in foster care reported to have disinhibited subtype reactive attachment disorder
      COHORT STUDY: Child Adolesc Psychiatry Ment Health 2014 Jul 15;8:21

    • STUDY SUMMARY
      21% of adolescents aged 12-17 years receiving Intensive Youth Justice Services in Scotland reported to have DSED
      CROSS-SECTIONAL STUDY: Child Abuse Negl 2017 Mar;65:77

Risk Factors

  • risk of disinhibited social engagement disorder (DSED) is increased with experience of seriously adverse, neglectful caregiving environments in early childhood,,
    • many children raised in institutions are reported to develop insecure or disorganized attachment styles, but most do not develop attachment disorders
    • children in some countries are at risk for DSED due to poor quality and quantity of care from understaffing of children's homes/orphanages due to socio-economic conditions
    • in Western industrialized countries early environmental risk factors usually involve parental mental illness such as addiction, familial disintegration, teenage parenthood, poverty, or transgenerational traumatization
    • DSED has also been reported in children without history of institutional rearing and/or social neglect, though both are considered risk factors for indiscriminate social behavior
    • STUDY SUMMARY
      institutionalization appears associated with disinhibited social engagement behaviors
      COHORT STUDY: J Child Psychol Psychiatry 2016 Oct;57(10):1126

  • genetic factors
    • due to presentation similarity between DSED and Williams syndrome (see Differential diagnosis section), it is hypothesized specific polymorphisms on region 7q11.23 plus deprivation in first year of life may be a pathway to DSED development
      • STUDY SUMMARY
        homozygous s/s genotype of serotonin transporter gene (5-HTTLPR) plus institutional rearing reported to be associated with increased indiscriminate behavior
        CASE-CONTROL STUDY: Physiol Behav 2015 Dec 1;152(Pt A):85

  • evidence for effect of caregiving quality on DSED or disinhibited attachment is mixed
    • STUDY SUMMARY
      quality of caregiving appears associated with Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV) reactive attachment disorder (RAD)
      RANDOMIZED TRIAL: J Am Acad Child Adolesc Psychiatry 2011 Mar;50(3):216

    • STUDY SUMMARY
      higher levels of positive caregiving might be associated with increased levels of indiscriminate friendliness in institutionally reared children, but not in family reared children
      COHORT STUDY: J Child Psychol Psychiatry 2010 Dec;51(12):1368

    • STUDY SUMMARY
      higher levels of maternal sensitivity may be associated with decreased levels of indiscriminate friendliness in female infants adopted from China
      COHORT STUDY: Dev Psychopathol 2012 Feb;24(1):49

  • STUDY SUMMARY
    increasingly older age at adoption might be associated with increased likelihood of disinhibited attachment disorder, but evidence is mixed
    SYSTEMATIC REVIEW: Clin Child Fam Psychol Rev 2013 Jun;16(2):101

Associated Conditions

  • severe caregiving adversity early in life is required for diagnosis of disinhibited social engagement disorder (DSED), and is also a risk factor for many other conditions; early deprivation or neglect also associated with,,
    • developmental and cognitive delays
    • psychological disorders or behavioral aberrations; data is limited but disorders commonly associated with DSED include
      • attention deficit hyperactivity disorder (ADHD)
      • posttraumatic stress disorder (PTSD)
        • suspect comorbid PTSD if
          • hyper-vigilance or irritability is present in infant, toddler, or preschool child
          • repetitive play with recurrent catastrophic themes is present in preschool child
        • see also Posttraumatic stress disorder (PTSD)
      • "quasi-autism"
        • has been reported in some children adopted out of institutions with severely deprived environments
        • characterized by meeting full clinical criteria for autism at age 4 years, but not meeting criteria at age 6 years
        • at age 6 years, children were reported to still exhibit odd relatedness including some indiscriminate behavior and peculiar interests, but demonstrated more flexible communication abilities than is typical of autism
        • some children reported to have quasi-autism were reported to show indiscriminate behavior similar to DSED at school-age and adolescence
  • high levels of cognitive comorbidities reported in older children and adolescents with attachment disorder diagnosis including
    • intellectual disabilities
    • language problems
    • learning difficulties
  • attachment styles found in cross-sectional study of 14 children with definite reactive attachment disorder (RAD) or suspected or borderline RAD (majority with disinhibited subtype now Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5} disinhibited social engagement disorder diagnosis) from a cohort of 1,600 children aged 6-8 years residing in low-socioeconomic urban sector of United Kingdom, compared to reported normative values on Manchester Child Attachment Story Task (MCAST)
    • secure attachment in 8 children (57%) compared to expected normative proportion of 65%
    • insecure-disorganized in 4 children (30%) compared to expected normative proportion of 12% (estimated from figure)
    • insecure-avoidant attachment in 1 child (7%) compared to expected normative proportion of 8% (estimated from figure)
    • insecure-ambivalent attachment in 1 child (7%) compared to expected normative proportion of 8% (estimated from figure)
    • Reference - ScientificWorldJournal 2013;2013:818157
  • STUDY SUMMARY
    RAD disinhibited subtype appears associated with below average social skills and IQ, and increased likelihood of developmental problems and comorbid disorders
    CROSS-SECTIONAL STUDY: ScientificWorldJournal 2013;2013:818157

  • STUDY SUMMARY
    RAD disinhibited subtype appears associated with social problems and functional impairment in children residing in institutions in Romania
    RANDOMIZED TRIAL: J Am Acad Child Adolesc Psychiatry 2011 Mar;50(3):216

  • STUDY SUMMARY
    disinhibited attachment associated with problems in ≥ 1 other domain of functioning at age 11 years in adopted children
    COHORT STUDY: J Child Psychol Psychiatry 2007 Jan;48(1):17

  • STUDY SUMMARY
    attachment disorder symptoms appear associated with hyperactivity, peer problems, and emotional symptoms in adolescent offenders aged 12-17 years
    CROSS-SECTIONAL STUDY: Child Abuse Negl 2017 Mar;65:77

  • STUDY SUMMARY
    RAD disinhibited type appears associated with signs of ADHD and impaired social competence in children with history of institutional rearing in Romania
    RANDOMIZED TRIAL: J Am Acad Child Adolesc Psychiatry 2011 Mar;50(3):216

  • STUDY SUMMARY
    impairment in pragmatic language skills reported to be associated with RAD disinhibited or mixed subtypes
    CASE-CONTROL STUDY: Eur Child Adolesc Psychiatry 2012 May;21(5):267

  • STUDY SUMMARY
    comorbidity of RAD with DSED appears associated with callous-unemotional traits and conduct disorder
    COHORT STUDY: Res Dev Disabil 2017 Apr;63:28

  • STUDY SUMMARY
    DSED with or without RAD may co-occur with autism spectrum disorder
    COHORT STUDY: Clin Child Psychol Psychiatry 2017 Oct;22(4):620

Etiology and Pathogenesis

Causes

  • disinhibited social engagement disorder is classified as "trauma and stress-related disorder" that occurs in young children due to severely insufficient caregiving,,
  • situations that limit a child's ability to form selective attachment may include,
    • social neglect or deprivation
    • frequent changes of primary caregivers (as in foster care)
    • deprivation that may occur in institutional settings

Pathogenesis

  • disinhibited social engagement disorder (DSED) develops as a result of social neglect or deprivation in first years of life and early childhood,
  • typical bonding and attachment process begins in first few years of life and results in normal patterns of behavioral organization
    • in infancy, behavior develops to seek close physical proximity to preferred caregiver for comfort, support, nurturance, or protection
    • between ages 2 and 7 months, infants interact with variety of social partners and may be able to be soothed by unfamiliar caregivers in addition to familiar caregivers
    • at ages 7-9 months "selective or preferred" attachment develops, with development of stranger wariness and protestation if separated from familiar caregivers
      • infants favor caregivers with whom they have significant amounts of interaction
      • typically there is a hierarchy of caregiver preference, and there is reported to be a limit to capacity to attach to large numbers of caregivers because actual physical contact and regular interaction appears necessary for bonds to form
      • in institutions with many caregivers working irregular shifts, many children are reported to have little to no preference for attachment figures
    • preferred attachments can develop at any age after 7-9 months, if sufficient interaction is provided
    • at age 12 months, assessment of attachment quality can be assessed with Strange Situation Procedure (see Clinical observations of attachment section)
  • neurobiological abnormalities in children with early deprivation in functional imaging studies include,
    • reductions of gray and white matter volumes, corresponding with reduced electrical activity in higher frequencies and increased electrical activity in lower frequencies
    • disruptions in connectivity between amygdala and prefrontal cortex
    • STUDY SUMMARY
      adopted children with history of institutionalization reported to not show discrimination between images of mother and stranger's faces in amygdala activation, and to show significantly higher activation compared to controls when viewing stranger's faces
      CASE-CONTROL STUDY: Biol Psychiatry 2013 Dec 1;74(11):853

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