FAQs › What Is TCM Tongue Diagnosis?
Tongue diagnosis in TCM involves examining the colour, shape, coating, and moisture of the tongue to reveal the state of internal organ systems. It is one of the most accessible and reliable diagnostic tools in Chinese medicine.
The tongue in TCM is considered a mirror of the internal organs. Different areas of the tongue correspond to different organ systems: the tip reflects the Heart and Lung; the sides reflect the Liver and Gallbladder; the centre reflects the Spleen and Stomach; the root reflects the Kidney.
Tongue body colour: Pale indicates Blood or Yang deficiency; red indicates Heat (whether full Heat from excess or empty Heat from Yin deficiency); purple indicates Blood stasis; dark red with a peeled coat indicates severe Yin deficiency. Tongue coating: A thin white coat is normal. A thick white coat indicates Cold-Damp. A yellow coat indicates Heat. A peeled or absent coat indicates Stomach Yin deficiency or prolonged illness.
Tongue diagnosis is particularly valuable because the tongue changes more slowly than the pulse — it provides information about underlying constitutional patterns and the depth and duration of a condition. When tongue findings are integrated with pulse findings and the health history, the practitioner can make a reliable diagnosis of the patient's TCM pattern and prescribe accordingly.
Regular patients at Rainbow Medicine sometimes notice their tongue changing over the course of treatment — a thick coating clearing, a pale colour improving to normal pink — which provides visible confirmation that the treatment is addressing the underlying pattern.
Book an initial consultation at Rainbow Medicine — your tongue and pulse will help us find your unique health pattern.
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