What does the appearance of teeth marks on the tongue commonly signify?

The appearance of teeth marks on the tongue is commonly associated with a specific deficiency condition, particularly related to the Spleen and Kidney Yang. This phenomenon suggests that there is insufficient energy or “Yang” within the body, leading to a failure of proper function in transforming and transporting fluids, as well as supporting the structure of the tongue. The Spleen's role is vital in digestion and assimilation, while the Kidney supports overall vitality and reserve energy.

When Yang is deficient, the tongue may not have the firmness necessary to maintain its normal shape, which can result in indentations that resemble teeth marks. These marks indicate a more generalized weakness in the body’s Yang energy, which can lead to symptoms such as fatigue, cold extremities, and digestive issues. Therefore, identifying teeth marks on the tongue signals a careful assessment of the underlying Yang deficiency, particularly in relation to the Spleen and Kidney systems. This is important for diagnosis in Traditional Chinese Medicine, guiding practitioners in designing appropriate treatment strategies.