A diagnosis of a dissociative identity disorder or a schizophrenia spectrum disorder
Conditions
Interventions
None listed
Sponsors
Stichting PVO
Eligibility
Inclusion criteria
Inclusion criteria: - In order to be eligible to participate in this study, a patient must meet one of the following criteria: o A diagnosis of Dissociative Identity Disorder (DID) (300.14) o A diagnosis of Schizophrenia Spectrum and other Psychotic Disorders (SSD), more specifically one of the following diagnoses in this category: Brief Psychotic Disorder (298.8); Schizophreniform Disorder (295.40) or Schizophrenia (295.90) and persistent voice hearing - Participants will be divided into groups in terms of their diagnosis and the presence/absence of a childhood trauma history: o Participants with Dissociative Identity Disorder o Participants with Schizophrenia Spectrum Disorder with a childhood trauma history o Participants with Schizophrenia Spectrum Disorder without a childhood trauma history
Exclusion criteria
Exclusion criteria: - Severe current substance abuse (e.g., the use of hallucinogens, cannabis, amphetamine-type stimulants and cocaine; DSM-5) that produces acute drug effects that are difficult to differentiate from the mental disorders and symptoms involving this study (e.g., dissociative feelings, hallucinations or paranoid ideation). - The presence of a substance/medication-induced mental disorder that shares the phenomenology of schizophrenia spectrum disorders and dissociative disorders (e.g., cannabis or alcohol induced psychotic disorder). - Severe brain damage, which prevents the participant from answering the questions and using the smartphone application properly. - Lack of fluency in Dutch - Severity of present disorders (e.g. too much anxiety or paranoid cognitive distortions), that disables the patient to contribute. - Patients that meet both the diagnosis of dissociative identity disorder ánd schizophrenia spectrum disorder (true comorbidity) will be excluded. - For ethical reasons, patients that are currently in crisis (i.e., immediate danger to oneself or others) will be excluded (e.g., acute high risk of suicide, severe self-injurious behavior, or severe aggression-control problems).
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Characteristics of voices (measured by daily momentary assessment) | — |
Secondary
| Measure | Time frame |
|---|---|
| Dissociative symptoms; symptoms of psychosis; life events; characteristics of voices (as measured by a retrospective questionnaire); and insomnia | — |
Contacts
Public ContactVera de Vries
University of Groningen
Outcome results
None listed