The crimson tongue is a further exasperation of the red tongue. It indicates pathogenic heat invasion in the nutritive or blood level, latent heat in the Heart and Stomach, or heat transmission into the pericardium. yin deficiency leading to hyperactivity of fire Crimson dry This blue looks like the blue in veins beneath the skin and indicates excessive cold accumulation or blood stagnation. Liver blood stagnation excess cold accumulation Blue all sides The purple tongue indicates blood stagnation caused by a variety of pathogenic factors. stagnation with, or due to a deficiency of bloodpale stagnation alone or due to an accumulation of excess cold stagnation due to yin exhaustion cloying the blood Purple dark red blue The red tongue is a deeper red than the normal pink tongue. It indicates various heat syndromes. Yin deficiency heat excess heat or yang qi excess Red dry scanty coat The pale tongue is less red than a normal tongue. It indicates syndromes of deficiencies of qi, blood or yang. Spleen and Stomach impairment with qi and blood deficiency qi deficiency fails to distribute body fluids Spleen and Kidney yang deficiency prevents the proper transformation of water and so creates dampness Pale IndicationsColors and Coats moist dry no coat