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4 clinical studies listed.

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Somatic Symptom Disorder (DSM-5)

Tundra lists 4 Somatic Symptom Disorder (DSM-5) clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT06909669

Ultra-brief Psychological Treatments for Emotional Symptoms and Disorders

The main objective of this randomized clinical trial is to study if various modalities of brief (eight sessions) and ultra-brief (four sessions) transdiagnostic cognitive-behavioral treatment work for decrease emotional symptoms and disorders, as well as to find out which emotional regulation processes and common factor of the intervention itself are involved in the therapeutic improvement. The investigators will compare the interventions of four groups: ultra-brief group treatment (1), brief group treatment (2), ultra-brief individual treatment (3) with the ultra-brief relaxation (control) group. The main questions the study aims to answer are: * Will the brief and ultra-brief treatment formats works better than the relaxation-based control group? * Will results obtained between the brief group therapy group and the ultra-brief group therapy group be similar? * Will the individual ultra brief therapy be more effective than the two group therapies because of common factors, such as the therapeutic alliance? * Will group therapies be more beneficial for cost and in terms of capability to reduce emocional symptoms than individual therapy? Participants will be randomly assigned to each of the groups and will receive the corresponding treatment, with different number of sessions. They will answer a series of questionnaires at the beginning and at the end of the intervention, as well as 3 months and 6 months after the end of the treatment.

Gender: All

Ages: 18 Years - Any

Updated: 2026-10-02

1 state

Depression - Major Depressive Disorder
Generalized Anxiety Disorder
Generalized Anxiety
+5
NOT YET RECRUITING

NCT06506136

Evaluation of Fluoxetine for Refractory Constipation With Somatic Symptom Disorder Features

This single-center, randomized, double-blind, placebo-controlled trial evaluates the efficacy and safety of fluoxetine (40 mg/day) versus placebo in 194 adults with refractory chronic constipation exhibiting Somatic Symptom Disorder (SSD) features diagnosed by SCID-5. After a 2-week screening period, participants are randomized 1:1 to fluoxetine or matching placebo for 12 weeks. The primary endpoint is the proportion of CSBM responders, defined as an increase of ≥1 CSBM per week from baseline in ≥50% of treatment weeks (Weeks 5-12). Key secondary endpoints include weekly SBM/CSBM frequency, Bristol Stool Form Scale, straining score, bloating severity, Patient Global Impression of Change (PGIC, 7-point), and changes in validated PRO scales (SSD-12, PHQ-15, PHQ-9, GAD-7, PAC-QOL, KESS). Mechanistic assessments include resting-state fMRI and high-resolution anorectal manometry (HRAM). Safety is monitored through adverse events, thyroid/liver/renal function tests, and ECG.

Gender: All

Ages: 18 Years - 70 Years

Updated: 2026-09-02

Refractory Constipation
Somatic Symptom Disorder (DSM-5)
Functional Constipation (FC)
TERMINATED

NCT06631911

Emotional Awareness and Expression Therapy for Patients With Persistent Physical Symptoms in Routine Psychiatric Care: A Pilot Study

Emotional Awareness and Expression Therapy (EAET) has emerged as a promising approach for addressing persistent physical symptoms (PPS). Investigating EAET within the context of routine psychiatric care is crucial for several reasons: Many patients with PPS experience significant distress and functional impairment, yet traditional medical treatments often fail to provide adequate relief. Integrating EAET into routine care could offer a valuable therapeutic option for this population. Preliminary studies suggest that EAET can lead to significant reductions in pain and other somatic symptoms. Investigating its effectiveness in routine care settings could enhance treatment outcomes for patients who have not responded to conventional therapies. There is often a disconnect between mental health and physical health treatment in routine care. Investigating EAET can help bridge this gap, fostering collaboration between mental health professionals and primary care providers to address the complexities of patients\' health issues.

Gender: All

Ages: 18 Years - Any

Updated: 2026-07-27

Persistent Physical Symptoms (PPS)
Functional Somatic Disorder
Functional Somatic Syndromes
+1
RECRUITING

NCT07323407

Transcranial Alternating Current Stimulation for Refractory Constipation With Somatic Symptom Disorder

The purpose of this randomized, double-blind, placebo-controlled trial is to evaluate the efficacy and safety of transcranial alternating current stimulation (tACS) in adults with refractory functional constipation comorbid with somatic symptom disorder. This population is characterized by persistent bowel dysfunction despite conventional treatments, frequent reliance on laxatives, and evidence of impaired brain-gut regulation contributing to chronic symptoms. The study focuses on three primary domains: Efficacy - Bowel Function: • Assessment of whether a 4-week course of tACS improves bowel activity, measured by changes in Complete Spontaneous Bowel Movements (CSBM) and overall bowel-movement frequency over the treatment and follow-up period. Efficacy - Symptom and Quality of Life Burden: • Evaluation of the effect of tACS on constipation-related severity and patient-reported outcomes, including the Patient Assessment of Constipation-Symptoms (PAC-SYM) and Patient Assessment of Constipation-Quality of Life (PAC-QOL). Safety and Tolerability: • Documentation of adverse events associated with tACS, with particular attention to incidence, intensity, and overall patient tolerability compared with sham stimulation.

Gender: All

Ages: 18 Years - 80 Years

Updated: 2026-01-09

1 state

Functional Constipation (FC)
Somatic Symptom Disorder (DSM-5)
Refractory Constipation