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ISTDP for Patients With Treatment Resistance PPS

24 de julio de 2026 actualizado por: Daniel Maroti

Individual Intensive Short Term Psychodynamic Psychotherapy for Patients With Treatment Resistance Persistent Physical Symptoms

Intensive Short-Term Psychodynamic Psychotherapy (ISTDP) for Treatment-Resistant Persistent Physical Symptoms is a therapeutic approach designed to help patients whose physical symptoms have not responded to traditional medical or psychological treatments. These persistent physical symptoms (PPS) often include conditions such as chronic pain, fatigue, or gastrointestinal issues, where a psychological component may be involved.

ISTDP focuses on identifying and addressing unconscious emotional conflicts, which are thought to contribute to or exacerbate physical symptoms. The therapy encourages patients to recognize and express repressed emotions, such as anger, sadness, or fear, which may manifest somatically if left unresolved.

For patients with treatment-resistant PPS, ISTDP offers a focused, time-limited intervention aimed at breaking the cycle of emotional suppression and physical symptomatology. The method involves intense therapeutic engagement, fostering a direct experience of emotions in a controlled environment. Through this process, patients often gain emotional awareness and experience symptom relief.

Research on ISTDP in this population suggests that it can effectively reduce the severity of physical symptoms, improve emotional well-being, and enhance overall functioning when other treatments have not yielded significant results.

For patients with treatment-resistant PPS, ISTDP offers a focused, time-limited intervention aimed at breaking the cycle of emotional suppression and physical symptomatology. The method involves intense therapeutic engagement, fostering a direct experience of emotions in a controlled environment. Through this process, patients often gain emotional awareness and experience symptom relief.

Research on ISTDP for this population suggests that it can be effective in reducing the severity of physical symptoms, improving emotional well-being, and increasing overall functioning when other treatments have failed to produce significant results.

Descripción general del estudio

Tipo de estudio

Intervencionista

Inscripción (Actual)

25

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

      • Stockholm, Suecia, 10691
        • Stockholm University

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  • The participant certifies that they have undergone a medical evaluation for their physical symptoms.
  • The participant rates either moderate distress from physical symptoms on the PHQ-15 form (over 10 points) or significant distress from a single physical symptom (at least 2 points for that symptom).
  • The participant expresses interest in exploring whether emotional factors, such as stress, may contribute to their symptom profile.
  • Any prescribed medications must have been stable for at least 1 month.
  • Participants must meet the criteria for non-response/treatment resistance, i.e., no reliable change in PHQ-15.

Exclusion Criteria:

  • Participants suffer from ongoing substance abuse (alcohol or drugs) or are assessed to have severe mental health issues (psychotic disorders, moderate to high suicide risk, antisocial personality disorder, etc.).
  • Participants are currently prescribed medications that are clearly addictive and sedative in nature (e.g., benzodiazepines).
  • Participants are involved in other psychological treatments focused on physical symptoms. However, other psychological treatments are allowed as long as the supportive therapy does not occur more than once a month.
  • Participants do not have sufficient proficiency in the Swedish language.
  • Somatic symptoms is judged to be need further medically evaluation or treatment.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: N / A
  • Modelo Intervencionista: Asignación de un solo grupo
  • Enmascaramiento: Ninguno (etiqueta abierta)

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Otro: Individual intensive short term psychodynamic therapy
The Individual Intensive Short-Term Psychodynamic Psychotherapy (ISTDP) arm for patients with Persistent Physical Symptoms (PPS) focuses on addressing the underlying emotional and psychological factors contributing to these chronic symptoms. In this treatment arm, participants engage in structured, one-on-one psychotherapy sessions with a trained ISTDP therapist.
ISTDP aims to help patients explore and process unconscious emotions, particularly those linked to past trauma or unresolved conflicts, that may be contributing to their physical symptoms. Patients are guided to identify and express repressed feelings such as anger, grief, or fear. The therapist actively engages the patient in a focused and intensive manner, helping them to recognize emotional defenses, break through resistance, and experience these emotions directly in the therapeutic setting.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Patient Health Questionaire-15 (PHQ-15)
Periodo de tiempo: Lineal regression model using measurement points from from pre-treatment, 1 week before treatment and during treatment (up to 5 months)
Somatic symptom severity during the "last week" was assessed with the PHQ-15. Items were rated 0 ("Not bothered at all"), 1 ("Bothered a little"), or 2 ("Bothered a lot"); total scores range from 0 to 30 for women and 0-27 for men.
Lineal regression model using measurement points from from pre-treatment, 1 week before treatment and during treatment (up to 5 months)
Visual Analoge Scales
Periodo de tiempo: Lineal regression model using measurement points from from pre-treatment, 1 week before treatment and during treatment (up to 5 months)
Visual Analoge Scales suggested by the EURONET-SOMA network (Rief et al., 2017). Somatic symptom intensity was measured from 1 ("No symptom") to 10 ("Symptom as bad as you can imagine") and somatic symptom interference from 1 ("No interference") to 10 ("Maximum interference").
Lineal regression model using measurement points from from pre-treatment, 1 week before treatment and during treatment (up to 5 months)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Patient Health Questionaire-9 (PHQ-9)
Periodo de tiempo: Measured before treatment start and post treatment (after 16 weeks of treatment).
PHQ-9 consists of nine questions withs ratings 0-3 (0= "not at all", 3= "almost every day") on impact of depressive symptoms. Higher scores indicate worse symptom/functioning with a maximum score of 27.
Measured before treatment start and post treatment (after 16 weeks of treatment).
Generalized Anxiety Disorder 7-item scale (GAD-7)
Periodo de tiempo: Measured before treatment start and post treatment (after 16 weeks of treatment).
GAD-7 consists of seven questions with ratings 0-3 (0= "not at all", 3= "almost every day") on impact of anxiety symptoms. Higher scores indicate worse symptom/functioning functioning with a maximum score of 21.
Measured before treatment start and post treatment (after 16 weeks of treatment).
Post traumatic symptom Check List-5 (PCL-5)
Periodo de tiempo: Measured before treatment start and post treatment (after 16 weeks of treatment).
PCL-5 consists of 20 questions with ratings 0-4 on impact of post traumatic symptoms. Higher scores indicate worse symptom/functioning with a maximum score of 80.
Measured before treatment start and post treatment (after 16 weeks of treatment).

Otras medidas de resultado

Medida de resultado
Medida Descripción
Periodo de tiempo
Negative Effects Questionnaire (NEQ)
Periodo de tiempo: At post-treatment (after 16 weeks of treatment)]
Participants respond to a series of statements regarding potential negative effects they may have experienced during or after therapy, typically using a Likert scale (e.g., 1 = "Not at all," to 5 = "Extremely"). The total score is computed by summing the responses, where higher scores indicate a greater frequency or severity of negative effects.
At post-treatment (after 16 weeks of treatment)]
Patient Session rating scale (with 8 additional questions)
Periodo de tiempo: Each week once a week throughout 16 weeks of treatment
Session Rating Scale (SRS) evaluates the therapeutic alliance and the quality of the therapy session. It consists of four items rated on a scale from 0 ("Not at all") to 10 ("Extremely") that assess various aspects of the therapy session, including the therapist's understanding of the patient, the relevance of the session, the connection between the patient and therapist, and how well the patient's needs were addressed. In the same manner 8 additional questions on experienced emotions are asked (e.g. on a scale 0-10 how much shame was experienced in the therapy session).
Each week once a week throughout 16 weeks of treatment
Therapist Rating after each ISTDP session
Periodo de tiempo: Each week once a week throughout 16 weeks of treatment
"Therapist Rating after each ISTDP session" measures several aspects of the therapeutic process and the patient's emotional response during the session. For example, on a five point Likert scale - To a very small extent" to "To a very high extent - the therapist rate the extent to which he/she focused on and/or used typical ISTDP interventions during the session.
Each week once a week throughout 16 weeks of treatment
Patient Health Questionaire-4 (PHQ-4)
Periodo de tiempo: Each week once a week throughout 16 weeks of treatment
PHQ-4 consists of four questions withs ratings 0-3 (0= "not at all", 3= "almost every day") on impact of depressive symptoms. Higher scores indicate worse symptom/functioning with a maximum score of 12.
Each week once a week throughout 16 weeks of treatment

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

1 de febrero de 2025

Finalización primaria (Actual)

31 de diciembre de 2025

Finalización del estudio (Actual)

31 de diciembre de 2025

Fechas de registro del estudio

Enviado por primera vez

6 de noviembre de 2024

Primero enviado que cumplió con los criterios de control de calidad

8 de noviembre de 2024

Publicado por primera vez (Actual)

12 de noviembre de 2024

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

27 de julio de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

24 de julio de 2026

Última verificación

1 de julio de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • KOSMOS3-Individual ISTPD

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

Descripción del plan IPD

Participants have not approved this.

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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