Summary: A focused, four-day treatment for panic disorder has produced striking and lasting results in recent research. Known as the Bergen 4-Day Treatment (B4DT), this concentrated cognitive behavioral therapy (CBT) format delivers rapid relief: almost 90% of patients report marked improvement one week after treatment. Long-term follow-ups show sustained gains and continued improvement months later, and the approach also reduces symptoms of generalized anxiety and depression.
Panic attacks can be intensely frightening and disruptive. When they occur repeatedly, the condition is diagnosed as panic disorder. B4DT was developed in Bergen to deliver intensive exposure-based CBT across four consecutive days, rather than spreading therapy over many weeks, and has been adapted from formats originally used for obsessive-compulsive disorder.
Key findings
- Rapid relief: Nearly 90% of patients reported clear symptom improvement within one week of treatment.
- Enduring effect: Many patients reported further improvement at three-month and longer-term follow-ups, indicating sustained benefits.
- Broad impact: The program also produced significant reductions in generalized anxiety and depression symptoms.
Previous trials have shown B4DT can quickly reduce panic symptoms. New long-term follow-up data add encouraging evidence that benefits are maintained and, for many, continue to increase after treatment.
Clinical perspective
“Improvement not only persists, but in many cases becomes stronger over time,” says Kristen Hagen, psychologist and associate professor at NTNU, who led the recent studies published in BMC Psychiatry. Patients report feeling better at three months and at longer-term follow-ups than immediately after the intensive week of treatment.
Hagen emphasizes the clinical significance of patients continuing to improve after treatment, while noting that these promising results should be confirmed in larger, controlled trials.
How the Bergen 4-Day Treatment works
Rather than offering weekly sessions over months, B4DT concentrates therapy into four consecutive days. Groups consist of three to six patients paired with a matching number of therapists. Treatment is individualized within the group format, focusing on guided exposure to symptoms and situations the patient has been avoiding.
Patients practice approaching feared internal sensations and external situations in a structured way. The aim is to shift the patient’s understanding: the intense fear is maintained by panic disorder processes, not by real external danger. This experiential learning helps reduce avoidance and restores confidence in everyday functioning.
Outcome data indicate that nearly nine out of ten patients report substantial improvement after B4DT, with many reporting minimal residual symptoms and good daily functioning.
About the research
Author: Nancy Bazilchuk
Source: NTNU
Contact: Nancy Bazilchuk – NTNU
Image credit: Neuroscience News
Original research: Open access. Two related papers in BMC Psychiatry by Kristen Hagen and colleagues report longer-term follow-ups of the Bergen 4-Day Treatment for panic disorder. Titles: “The bergen 4-day treatment for panic disorder: a longer-term follow-up” and “The Bergen 4-Day Treatment for panic disorder patients in a rural clinical setting: a long-term follow-up study.”
Abstract — The bergen 4-day treatment for panic disorder: a longer-term follow-up
Introduction
B4DT is a concentrated exposure-based CBT delivered over four consecutive days. Earlier studies suggested B4DT is promising for panic disorder (PD), but longer-term stability required more study.
Aim
This study evaluated longer-term effectiveness of B4DT for patients with PD with or without agoraphobia, reporting a follow-up on a previously published cohort (n = 30) initially assessed at three months post-treatment.
Method
Thirty consecutively included patients took part in an open trial. The primary outcome measure was the Panic Disorder Severity Scale (PDSS). Secondary measures were the Generalized Anxiety Disorder-7 (GAD-7) and the Patient Health Questionnaire-9 (PHQ-9). Assessments occurred at pretreatment, posttreatment, three months, and at a longer-term follow-up (mean 18 months).
Results
There was a marked reduction in panic symptoms from pretreatment to longer-term follow-up. PDSS scores fell from a mean of 19.83 before treatment to 4.37 post-treatment, 2.84 at three months, and 2.60 at the longer-term follow-up. The improvement remained statistically significant and stable over time (p < .001). At the 18-month follow-up, 90% of patients were classified as in remission. Significant reductions in depressive symptoms (d = 1.44) and generalized anxiety (d = 1.62) were also maintained.
Conclusion
The study indicates that B4DT effects are stable over time and the format appears promising for treating panic disorder. The authors call for confirmation in larger, controlled trials. Trial approval was granted by the Regional Committee for Medical and Health Research Ethics of Northern Norway (REK Nord-2021/209619).
Abstract — The Bergen 4-Day Treatment for panic disorder patients in a rural clinical setting: a long-term follow-up study
Background
The B4DT is a concentrated CBT approach that has shown promise for panic disorder. Its long-term effectiveness in rural clinical settings warranted further investigation.
Methods
A naturalistic open-label trial included 58 patients assessed at a 12-month follow-up. Measures included PDSS, PHQ-9, and GAD-7.
Results
The study found significant and sustained reductions in panic symptoms, with an 82.8% remission rate maintained at 12 months. Secondary outcomes also showed significant improvements in depression and generalized anxiety symptoms.
Conclusions
B4DT appears to be a promising concentrated CBT treatment for panic disorder with stable long-term outcomes in rural settings. These findings support further investigation and broader implementation, subject to replication in larger and controlled studies. The study was reviewed by the Regional Committee for Medical Research Ethics Northern Norway (REK Nord2021/273145).