The symptoms of stomach cold are: pain often caused by cold weather and eating cold food, accompanied by cold feeling in the stomach, and the symptoms of getting warm are alleviated. The obvious symptom of stomach cold and dampness is that the tongue coating is white and greasy, that is, the tongue coating is white and thick and difficult to scrape off. If manifested as continuous stomachache, warm and pressing, loss of appetite, mental fatigue, pale white tongue, mostly deficiency cold.

Stomach heat is divided into excess heat and deficiency heat: excess heat in the stomach, burning pain in the epigastric region, sour and bitter vomiting, thirst for cold drinks, constipation, red tongue with yellow coating, and slippery pulse. Stomach deficiency and heat, epigastric pain, retching, dry mouth and pharynx, dry stool, red tongue with little coating, and rapid pulse.

When the stomach heat is excessive, the function of decomposition is too strong, and there may be symptoms such as noisy stomach, eliminating valley and hunger, excessive heat and excessive dissipation of body fluids, resulting in dry heat and internal stagnation, loss of stomach balance, and symptoms such as bitter taste, thirst and constipation. What's more, it consumes yin fluid and causes stomach yin deficiency. Inflammation of stomach fire can cause stomach qi to go up, which can be seen as nausea, vomiting, bitter yellow water and other symptoms. Stomach fire goes up along the meridian, or it is toothache and swollen gums, or it is epistaxis, which burns the veins of the stomach, so the blood overflows and it is hematemesis.