Itchy Skin in Traditional Chinese Medicine

Fine (Xi), Floating (Fu), Wiry (Xian)

The tongue body is typically pale and may appear slightly thin or small, reflecting the underlying Blood Deficiency. The coating is thin and white, which is consistent with an external pathogenic factor (Wind) that has not yet generated Heat. The tongue may appear slightly dry, especially at the edges, due to Blood's failure to moisten. If the condition is longstanding, slight peeling may begin to develop in patches, but a fully geographic tongue would suggest progression toward Yin Deficiency.

Floating (Fu), Slowed-down (Huan)

In a pure Exterior Wind presentation, the tongue often appears largely normal since the pathogen has not yet penetrated deeply. The body is typically a normal pink-red colour, and the coating is thin and white. If Wind is combined with Cold, the coating remains thin and white with possibly slightly increased moisture. If Wind combines with Heat, the tongue tip or edges may become slightly red and the coating may begin to turn thin yellow. Changes beyond this suggest the pathogen has progressed deeper or transformed, pointing toward a different pattern.

Fine (Xi), Floating (Fu), Wiry (Xian)

The tongue body is typically pale and may appear slightly thin or small, reflecting the underlying Blood Deficiency. The coating is thin and white, which is consistent with an external pathogenic factor (Wind) that has not yet generated Heat. The tongue may appear slightly dry, especially at the edges, due to Blood's failure to moisten. If the condition is longstanding, slight peeling may begin to develop in patches, but a fully geographic tongue would suggest progression toward Yin Deficiency.

Fine (Xi), Rapid (Shu)

The classic Kidney Yin Deficiency tongue is red, thin, and dry, with little or no coating. The coating is often completely absent or appears peeled in patches (geographic tongue). Cracks may be visible on the tongue surface, reflecting long-term fluid depletion. In milder cases the tongue may still have a thin coating, but it will appear dry and insufficient. The redness tends to be deeper towards the root of the tongue (the Kidney area in tongue diagnosis). The overall impression is of a tongue that looks "dried out" compared to a healthy, moist, lightly coated tongue.

Rapid (Shu), Wiry (Xian), Slippery (Hua)

The tongue in Heat in the Blood is red to deep red (crimson), reflecting the intensity of Heat in the blood. In moderate presentations, the tongue is red with red spots or prickles, especially on the tip (corresponding to the Heart). The coating is typically thin and yellow, and the tongue surface tends to be dry due to Heat consuming fluids. In more severe presentations, the tongue may approach a crimson or deep red colour, but this indicates progression toward a more serious stage. The sides may also be redder than normal, reflecting Liver involvement. The tongue body often looks older and tougher in texture rather than tender.