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Protocol for Repetitive Transcranial Magnetic Stimulation with Symptom Provocation to Treat Obsessive-compulsive Disorder

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Dexamenthasone suppression test in obsessive compulsive disorder.

G P Rao¹, P Kulhara, R J Dash

¹Senior Resident in Psychiatry, Postgraduate Institute of Medical Education & Research, Chandigarh 160012, India.

Indian Journal of Psychiatry

|September 20, 2011

Summary

This summary is machine-generated.

The Dexamethasone Suppression Test (DST) revealed abnormal responses in 48% of patients with Obsessive Compulsive Disorder (OCD). Non-suppressors exhibited higher depression and obsessionality scores, suggesting a link between DST abnormalities and OCD symptom severity.

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Area of Science:

Neuroendocrinology
Psychiatry
Clinical Psychology

Background:

Obsessive Compulsive Disorder (OCD) is a debilitating mental health condition characterized by intrusive thoughts and repetitive behaviors.
The hypothalamic-pituitary-adrenal (HPA) axis is frequently implicated in psychiatric disorders, including OCD.
The Dexamethasone Suppression Test (DST) is a neuroendocrine challenge test used to assess HPA axis function.

Purpose of the Study:

To investigate the utility of the Dexamethasone Suppression Test (DST) in diagnosing Obsessive Compulsive Disorder (OCD).
To explore the correlation between abnormal DST responses and symptom severity in OCD patients.

Main Methods:

Twenty-five patients meeting Research Diagnostic Criteria for OCD underwent the DST.
Abnormal DST response was defined by established criteria.
Patients were assessed for depression and obsessionality using validated scales.

Main Results:

Abnormal DST responses were observed in 12 out of 25 patients (48%).
Patients with abnormal DST responses (non-suppressors) demonstrated significantly higher scores on measures of depression and obsessionality compared to suppressors.
These findings suggest a potential biological marker associated with symptom severity in OCD.

Conclusions:

The DST may serve as a potential biomarker for identifying a subset of OCD patients with HPA axis dysregulation.
Abnormal DST responses are associated with increased symptom severity, particularly depression and obsessionality, in OCD.
Further research is warranted to elucidate the neurobiological underpinnings of these findings and their clinical implications.