dissociative disorder true ICD10CM:F48.9 UMLS_CUI:C0041857 ICD9CM:300.15 A disease of mental health in which the normally well-integrated functions of memory, identity, perception, or consciousness are separated (dissociated). dissociative reaction SNOMEDCT_US_2018_03_01:44376007 ICD9CM:300.9 ICD10CM:F44.9 UMLS_CUI:C0012746 dissociative disease DOID:4963 dissociative state Dissociation is a psychological state that may vary in severity from mild detachment from immediate surroundings to more severe detachment and apparent unresponsiveness. In mild cases, dissociation can be regarded as a coping mechanism in seeking to minimize or tolerate stress, conflict or boredom. If a coping response to stress, the dissociative state may be preceded by a phase where anxiety symptoms (e.g. hyperventilation) are apparent. More severe dissociative states are seen in dissociative disorders and may include depersonalization and amnesia. Dissociative disorders are sometimes triggered by traumatic experience, but may be preceded by only minor stress or there may be no apparent trigger. disease_ontology DOID:10935 CSP2005:2483-7018 MESH:D004213 NCI:C92197 Behavioral Disorder