When we speak of the brightness or the Shen of the tongue, we do not focus on details of color, shape, or coating. This is independent of the pathological characteristics of the tongue.

The brightness of the tongue indicates the general state of health, the vitality.

We observe the brightness of the tongue, the lips, and the face in general to know whether the prognosis is favorable or not.

Dark and Withered Appearance

In this case the prognosis is poor.

• Withered: Poor prognosis, "there is no life".

Lively Appearance

The tongue has Shen. In this case the prognosis is favorable.

• Bright: Good prognosis. "there is life".

The two images correspond to the tongue of the same patient after several treatment sessions. The improvement in the brightness of the tongue helps us see that the treatment is proving beneficial for her.