Five colours of tongue: blue purple tongue

The inspection of tongue is an important diagnostic method in traditional Chinese medicine. Tongue colour is a part of the inspection. Generally there are five colours of tongue. The article is telling about blue purple tongue.

In short, blue purple colour means the stasis of Qi and blood.

When the tongue is light purple without red colour, it is called blue tongue. In ancient times, some people called it the tongue of a water buffalo, because of similar colour.

The colour of purple tongue is deeper and darker than the colour of blue tongue.

When the tongue is pale with light blue purple colour, it is called pale purple tongue. Pale purple tongue develops from pale tongue, and it is generally moist. Pale purple indicates that pathogenic coldness is strong, leading to the blocking of Yang-Qi and the stasis of blood, or indicates that Yang is deficient, and Qi and blood can’t move smoothly, leading to the stasis of blood.

If the tongue is pale red with light blue purple colour, it indicates the stasis of lung Qi, or the stasis of liver Qi and blood, or indicates that Qi is deficient so it cannot push the movement of blood. This kind of tongue may also be seen in congenital heart disease or poisoning of some kinds of medicines or food.

If the tongue is red with light purple colour, it is called purple red tongue. If the tongue is deep red with light purple colour, it is called deep red purple tongue. Purple red tongue and deep red purple tongue develop from red tongue or deep red tongue. They generally look withered and dry. Purple red tongue and deep red purple tongue indicate that pathogenic heat is strong and stays in nutrient Qi and blood, leading to the damage of nutrient Qi and body fluid and the stasis of Qi and blood.

When the whole tongue is blue purple, it generally indicates the stasis of blood in the whole body. When only some purple spots are shown in the skin of the tongue, it indicates the stasis of blood in some parts.

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