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Relationship between Tongue Temperature Estimated by Infrared Thermography, Tongue Color, and Cold-Heat Pathological
Seung-Won Baek1,2, Jin-Moo Lee3,4, Young-Bae Park1,2
1Department of Biofunctional Medicine and Diagnostics, College of Korean Medicine, Kyung Hee University, Republic of Korea.
Summary
Infrared thermography (IRT) measured tongue temperature, showing age and regional variations. Lower tongue temperatures may indicate cold-heat pathologic patterns (CHPPs), suggesting IRT as a potential diagnostic indicator.
Area of Science:
- Traditional Chinese Medicine
- Diagnostic Techniques
- Medical Thermography
Background:
- Tongue diagnosis is a traditional method for identifying cold-heat pathologic patterns (CHPPs).
- Existing methods lack objective, quantifiable measures for tongue-based pattern differentiation.
Purpose of the Study:
- To investigate the correlation between infrared thermography (IRT)-measured tongue temperature and CHPPs in women with gynecological issues.
- To examine the influence of age, regional tongue variations, and color parameters on tongue temperature.
Main Methods:
- Retrospective review of electronic medical records for 134 women.
- Measurement of tongue temperature using IRT across seven regions.
- Assessment of tongue color, cold-heat pattern questionnaires (CHPQ), and body temperature.
- Factor analysis of CHPQ items for cold patterns (CP) and heat patterns (HP).
Main Results:
- Tongue temperature exhibited significant age effects and regional differences (e.g., root > tip).
- Higher tongue temperature correlated positively with increased luminance (brighter tongue color).
- Factor analysis identified distinct CP and HP factors.
- Lower tongue temperature correlated with specific CP and HP factors, suggesting links to blood perfusion and heat emission.
Conclusions:
- IRT-measured tongue temperature shows potential as a partial, objective indicator for CHPPs.
- Age and regional tongue variations influence temperature measurements.
- Tongue temperature's correlation with color parameters warrants further investigation.
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