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Perceived mood and skin body temperature rhythm in depression
B Barbini1, F Benedetti, C Colombo
1Department of Neuropsychiatric Sciences, School of Medicine, University of Milan, Italy.
European Archives of Psychiatry and Clinical Neuroscience
|September 5, 1998
Summary
Major depression patients show inverse circadian rhythms between mood and skin temperature. High mood rhythmicity correlates with low temperature rhythmicity, suggesting disrupted biological entrainment in recurrent depression.
Area of Science:
- Psychiatry
- Chronobiology
- Neuroscience
Background:
- Recurrent major depression is often associated with circadian rhythm disturbances.
- Understanding the interplay between mood and physiological rhythms is crucial for depression research.
Purpose of the Study:
- To investigate the relationship between circadian rhythmicity of mood and skin body temperature in patients with recurrent major depression.
- To explore potential disruptions in the entrainment of depressive illness to circadian pacemakers.
Main Methods:
- Monitored 18 inpatients with recurrent major depression during acute illness episodes.
- Measured diurnal mood variations (Visual Analogue Scale - VAS) and skin body temperature every 2 hours for 2 days.
- Analyzed circadian rhythmicity using cosinor analysis and statistical significance with chi-square tests.
Main Results:
- Patients with high circadian rhythmicity in mood severity showed low rhythmicity in skin body temperature.
- Conversely, patients with low mood oscillation (VAS) exhibited higher diurnal skin temperature variation.
- A statistically significant discordance between mood and skin temperature rhythms was confirmed.
Conclusions:
- Findings suggest an inverse relationship between mood and skin temperature circadian rhythms in major depression.
- Hypothesizes varying degrees of entrainment of the disease process to the primary circadian pacemaker.
- Highlights potential biomarkers for understanding depression pathophysiology.