High blood sugar belongs to the category of “thirst” in Chinese medicine, which is divided into lung heat and fluid injury (heat in the lungs, which continuously depletes the body’s fluid), gastric fever, qi and yin deficiency, kidney yin deficiency, and yin and yang deficiency. 1. Lung Heat and Fluid Injury: excessive thirst and drinking, dry mouth and tongue, frequent and copious urination, irritable heat (irritability and sultriness) and excessive sweating, red tongue edges, thin yellow moss, and rapid pulse. 2. Evidence of blazing stomach heat: excessive eating and hunger, thirst, excessive urination, emaciation, dry stools, yellow moss, smooth and strong pulse. 3. Deficiency of qi and yin: thirst leading to drinking, ability to eat and loose stools (thin and unshaped stools), lack of energy, weakness of limbs, thinness, pale red tongue, white and dry moss, weak pulse. 4. Kidney Yin deficiency: frequent and heavy urination, lumbar and knee weakness (feeling of lumbar and knee weakness), fatigue, dizziness and tinnitus, red tongue with yellow fur, and fine pulse (pulse becomes narrower, thinner and faster). 5. Yin and Yang deficiency: frequent urination, emaciated face, soreness and weakness of waist and knees, lack of warmth of limbs, fear of cold, pale white and dry tongue, thin and weak pulse. People with high blood sugar are advised to go to regular hospitals to seek professional doctors for systematic diagnosis and treatment, and not to blindly identify the symptoms on their own, so as to avoid adverse consequences.