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Abnormal dexamethasone suppression test in daily chronic headache sufferers.
Psychiatry Research
|September 1, 1986
Summary
Daily chronic headache sufferers with depression showed abnormal dexamethasone suppression test (DST) results, indicating a potential biochemical link between chronic pain and mood disorders. This finding suggests a vulnerability marker for depression and chronic pain.
Area of Science:
- Neuroscience
- Psychiatry
- Endocrinology
Background:
- Daily chronic headache (DCH) is often comorbid with depression.
- The dexamethasone suppression test (DST) is used to assess hypothalamic-pituitary-adrenal (HPA) axis function, often abnormal in depression.
Purpose of the Study:
- To investigate HPA axis dysregulation in DCH patients using the DST.
- To explore the relationship between DST abnormalities, depression severity, and chronic headache.
Main Methods:
- Administered the DST to 48 patients with DCH, 37 of whom had comorbid depression.
- Measured cortisol levels at 0800h and 1600h.
- Assessed depression severity and personality traits using the Minnesota Multiphasic Personality Inventory (MMPI).
Main Results:
- 29.2% of DCH patients (14/48) showed abnormal cortisol escape after dexamethasone suppression.
- These 'escapers' had higher basal cortisol levels and MMPI depression scores than 'suppressors'.
- A subgroup of DCH sufferers exhibited a biochemical defect similar to that seen in endogenous depression.
Conclusions:
- Abnormal DST response in DCH patients suggests HPA axis dysregulation.
- DST escape may serve as a psychobiological marker for vulnerability to depression and chronic pain.
- Findings highlight a potential shared neurobiological pathway for chronic headache and depressive disorders.