Functional somatic disorders (FSD) are highly prevalent in neuropsychiatric and medical settings. This review explores Intensive Short-Term Dynamic Psychotherapy (ISTDP) as an emotion-focused brief psychotherapy for FSD. Theoretical foundations, methods, and evidence are discussed. ISTDP demonstrates efficacy across FSDs including chronic pain and FND, showing potential advantages over CBT.
This important review by Abbass and Haghiri does more than summarize research—it offers a roadmap for how ISTDP therapists can approach complex functional somatic disorders (FSDs) like chronic pain, irritable bowel syndrome (IBS), functional neurological symptoms, and medically unexplained conditions. These are notoriously difficult cases where patients often bounce between specialists, accumulate diagnoses, and show little improvement with standard treatments.
What sets ISTDP apart in this context is its focus on the unconscious, the emotional roots of somatic symptoms, and how anxiety is discharged through the body. For clinicians new to ISTDP, this is one of the core contributions of Davanloo’s metapsychology: unprocessed emotions, especially those linked to attachment trauma, do not simply vanish—they find a way to express themselves, often through the body.
One of the most practical learning points is the clear explanation of how anxiety manifests somatically. Abbass outlines four major anxiety discharge pathways:
Striated Muscle Activation
Physical tension, tremors, pain, fibromyalgia, headaches.
These patients often show visible tension and can tolerate more emotional exposure early on.
Smooth Muscle Activation
GI symptoms, IBS, migraines, bronchospasm, bladder urgency.
Requires slower pacing and improved anxiety tolerance before deep emotional work.
Cognitive-Perceptual Disruption
Dissociation, blurry vision, loss of sensation, disorientation.
This signals fragility or repression-based defenses and requires stabilization.
Conversion / Paralysis (Motor Conversion)
Functional seizures, limb weakness, functional aphonia.
Treated by building capacity to experience feelings without collapsing into somatic symptoms.
For therapists, learning to observe and differentiate these pathways is essential. It changes the way we view symptoms—not as enemies to eliminate, but as signposts to emotional truth.
The paper underscores that ISTDP is not just a treatment—it’s also a diagnostic process. Through trial therapy and video review, the clinician assesses:
For beginners, this shifts the question from “How do I get the patient to talk about trauma?” to “Can this patient tolerate emotional closeness or feeling without symptom escalation?”
So the therapist’s role is to re-regulate the anxiety system, reframe the emotional experience, and build access to feelings like grief, rage, guilt, and love. With time, patients can integrate these feelings, and somatic symptoms often diminish or disappear as the internal conflict is resolved.
Cost Savings and Healthcare Impact
From a systems perspective, ISTDP shows reductions in:
Emergency room visits
Medication usage
Overall healthcare costs
That means ISTDP isn’t just effective—it’s efficient. This supports the case for integrating ISTDP in primary care, neurology, and pain clinics.
If you're new or growing in ISTDP, here’s what you can start doing:
Ask your patients where they feel anxiety in the body
Learn to detect cognitive-perceptual disruptions
Slow down when somatic symptoms intensify
Get curious about the function of symptoms
Reframe your “difficult cases” as somatic expressions of emotional suffering
Summary
This scoping review is not just for researchers—it’s for therapists who want to understand the body-mind connection through a psychodynamic lens. ISTDP offers tools to uncover emotional roots, build affect tolerance, and resolve long-standing symptoms that medicine alone cannot explain. For those entering this field, this paper invites you to see the body as a messenger, and ISTDP as the language that helps translate its signals into healing.
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