Disinhibited attachment disorder

# Overview
Disinhibited attachment disorder of childhood (DAD) according to the International Classification of Diseases (ICD-10), is defined as:
Disinhibited attachment disorder is a subtype of the ICD-10 category F94, "Disorders of social functioning with onset specific to childhood and adolescence". The other subtype of F94 is reactive attachment disorder of childhood (RAD  F94 .1).
Synonymous or similar disorders include Affectionless psychopathy and Institutional syndrome.
Within the ICD-10 category scheme, disinhibited attachment disorder specifically excludes Asperger syndrome (F84.5), hospitalism in children (F43.2), and hyperkinetic disorders (F90.-).

## Comparison with the DSM-IV
The DSM-IV distinguishes two categories of RAD: an inhibited subtype and a disinhibited subtype. The ICD-10 describes the former, emotionally withdrawn subtype as RAD and the latter subtype as Disinhibited Attachment Disorder (DAD) (Zeanah et al., 2004).
Generally, the DSM-IV criteria for the inhibited subtype of RAD were generated by studies done on children who were maltreated or abused. Criteria for the DSM-IV disinhibited subtype of RAD were based on research on children raised in institutions (Zeanah, 1996). This is largely based on the fact that inhibited subtype of RAD is more prevalent in maltreated children, and the disinhibited subtype of RAD is more prevalent in children raised in institutions (Zeanah, 2000).

## Studies
In a study by Zeanah, (Zeanah et al., 2004) on reactive attachment disorder in maltreated toddlers, the criteria for DSM-IV disinhibited RAD (i.e. disinhibited attachment disorder) were:
- not having a discriminated, preferred attachment figure,
- not checking back after venturing away from the caregiver,
- lack of reticence with unfamiliar adults,
- a willingness to go off with relative strangers.
For comparison, the criteria for DSM-IV inhibited RAD were:
- absence of a discriminated, preferred adult,
- lack of comfort seeking for distress,
- failure to respond to comfort when offered,
- lack of social and emotional reciprocity, and
- emotion regulation difficulties.
The authors found that these two disorders were not completely independent; a few children may exhibit symptoms of both types of the disorder.

# Sources
- Zeanah CH (1996). "Beyond insecurity: a reconceptualization of attachment disorders of infancy" (PDF). J Consult Clin Psychol. 64 (1): 4252. doi:10.1037/0022-006X.64.1.42. PMID 8907083. Retrieved 2007-02-06..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"\"""\"""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{display:none;font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
- Zeanah CH (2000). "Disturbances of attachment in young children adopted from institutions". J Dev Behav Pediatr. 21 (3): 23036. PMID 10883884.
- Zeanah CH, Scheeringa M, Boris NW, Heller SS, Smyke AT, Trapani J (August 2004). "Reactive attachment disorder in maltreated toddlers". Child Abuse Negl. 28 (8): 87788. doi:10.1016/j.chiabu.2004.01.010. PMID 15350771.CS1 maint: Multiple names: authors list (link)