The Parasite and Infestation Study
Understanding the Experience of Patient-Physician Diagnostic Incongruency: I Know Something is Wrong But No One Believes Me
Many people have evidence of bugs, parasites, and infestation, but are told by others that they cannot find a cause. This distressing and frustrating experience can last for years, as the person seeks answers. The current study aims to understand the experience of these individuals. In a 1-2 hour session over Zoom, the investigators will ask participants questions about their experience, have them complete self-report questionnaires, and ask them to complete a few games on the computer. The investigators' goal is to help characterize and understand individuals with this experience to aid in better treatment and inform recommendations for providers.
Visão geral do estudo
Status
Intervenção / Tratamento
Descrição detalhada
The current study aims to characterize the experiences of people who have evidence of bugs, parasites, and/or infestation but are told by physicians or other professionals (e.g. vets, pest control) that there is nothing wrong. The investigators seek to understand the emotional and cognitive aspects of this experience, through semi-structured interviews, self-report questionnaires, and cognitive tasks. The study will take a few hours and is conducted remotely, allowing for participation regardless of the participant's physical location. There is practically no aggregate information on this experience, with most current information relying on case reports and medical record review. The investigators hope to provide greater insights into this experience to guide support for individuals going through this difficult process.
Tipo de estudo
Inscrição (Estimado)
Contactos e Locais
Contato de estudo
- Nome: Sheffield Lab
- Número de telefone: (615) 686-2488
- E-mail: sheffieldlab.vumc@gmail.com
Locais de estudo
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Tennessee
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Nashville, Tennessee, Estados Unidos, 37212
- Recrutamento
- Vanderbilt University Medical Center
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Contato:
- Sheffield Lab
- Número de telefone: (615) 686-2488
- E-mail: sheffieldlab.vumc@gmail.com
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-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Adults with a persistent experience of infestation or parasite that physicians or other professionals report no evidence for.
Descrição
Inclusion Criteria:
- Men and women aged 18-70 years old
- At least 50% certain that they have an active infection/infestation/parasite, despite being told by doctor that they do not
- Ability to read and speak English
- Access to a computer or phone for virtual visit
- No self-reported history of schizophrenia-spectrum disorder
Exclusion Criteria:
- Active substance use disorder (excluding nicotine and caffeine)
- History of severe head trauma
- Current use of antipsychotics
- Serious medical or neurological illness known to interfere with cognitive functioning
- Diagnosis of a learning disability or cognitive disorder
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Modelos de observação: COHORT
- Perspectivas de Tempo: CROSS_SECTIONAL
Coortes e Intervenções
Grupo / Coorte |
Intervenção / Tratamento |
|---|---|
|
PPDI Group
|
This study will not involve an intervention. |
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Psychological Wellbeing
Prazo: Baseline
|
Total score on the Warwick-Edinburgh Mental Wellbeing Scale (WEMWBS); scores range from 14-70; higher scores reflect greater wellbeing |
Baseline
|
|
Social Network
Prazo: Baseline
|
Ludden Social Network Scale - total score; higher scores reflect larger and closer social network (score: 0-30) |
Baseline
|
|
Depression
Prazo: Baseline
|
Total score - Beck Depression Inventory -II; Scores range from 0-63 with higher scores reflecting worse depression |
Baseline
|
|
Anxiety
Prazo: Baseline
|
Perseverative Thinking Questionnaire (PTQ); scores range from 0-60, higher scores reflect more perseveration |
Baseline
|
|
Belief Updating
Prazo: Baseline
|
Expectations of prior volatility (mu3) calculated from reversal learning task; higher parameter scores reflect greater expectations of volatility |
Baseline
|
|
BADE
Prazo: Baseline
|
Evidence Integration Impairment (EII) will be calculated based on decisions on the Bias Against Disconfirmatory Evidence task. Higher scores reflect more difficulty integrating information |
Baseline
|
|
Interoceptive Awareness
Prazo: Baseline
|
Multidimensional Assessment of Interoceptive Awareness-2; scores range from 0-185; higher scores reflect better interpersonal awareness |
Baseline
|
|
Dissociation
Prazo: Baseline
|
Cernis Felt Sense of Anomaly Scale (CEFSA); scores range from 0-140, higher scores reflect more severe dissociative experiences |
Baseline
|
|
Childhood Trauma
Prazo: Baseline
|
Childhood Trauma Questionnaire (CTQ)- scores range from 5-100, higher scores reflect more severe childhood maltreatment |
Baseline
|
|
DACOBS
Prazo: Baseline
|
Davos Assessment of Cognitive Biases Scale; higher scores reflect more severe cognitive biases. Scores range from 42-294 |
Baseline
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Julia Sheffield, PhD, Vanderbilt University Medical Center
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Conclusão Primária (Estimado)
Conclusão do estudo (Estimado)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- 201489
Plano para dados de participantes individuais (IPD)
Planeja compartilhar dados de participantes individuais (IPD)?
Informações sobre medicamentos e dispositivos, documentos de estudo
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