Which type of deficiencies would you associate with a dry tongue?

A dry tongue is often associated with blood and yin deficiencies in traditional Chinese medicine. Blood is believed to nourish the tissues and maintain moisture in the body. When there is a deficiency in blood, it can lead to dryness, including a dry tongue. Similarly, yin represents the cooling, moistening aspect of the body's energy and substance. A deficiency in yin would not provide enough moisture, further contributing to a dry tongue texture.

In summary, a dry tongue indicates insufficient nourishment and moisture, aligning with the characteristics of both blood and yin deficiencies in the context of traditional Chinese medical theory.