Huangdi Neijing holds that moisture describes a state of the atmosphere, that is to say, water and moisture are biased in the atmospheric environment where we live. The most obvious moisture is fog. The wettest season is long summer, that is, midsummer. At this time of the year, the weather is hottest, and groundwater is transpiration to the sky. In the sky, the concentration of water vapor is the largest, so it is also called wet soil.

When the humidity is heavy, it is easiest to suppress the internal fire. Because the human body radiates heat, it is largely evaporated through the moisture in the epidermis. When water evaporates and water vapor goes out, it will take away the heat of the human body. If the humidity of the external environment is too high, the evaporation of water vapor on the surface of the human body will be slow and become very slow. It is difficult to dissipate the excess heat in the human body in time. Internal heat cannot dissipate, but will accumulate in the body, forming internal heat. Moreover, the internal heat is heavy, and it is easy to have a fever and exhaust, which will cause various diseases. The pathogenesis here is that too much moisture will lead to the heat in the human body not being released in time. If you treat it, you should pay attention to dehumidification and heat dissipation. Without dehumidification, heat dissipation is difficult. This kind of moisture is intertwined with internal heat, which is called damp heat.

Another is cold and dampness. In autumn and winter, the temperature is very low, and you will feel wet and cold when you encounter foggy weather. In the morning, vilen is prone to morning fog. This fog will dissipate as long as the sun rises and the sun shines. This kind of moisture will hinder the circulation of yang in human body. Where the yang is insufficient, there will be cold stagnation and various diseases. At this time, moisture and cold are intertwined, which is called cold and dampness. In Treatise on Febrile Diseases and Huang Yuanyu's books, both cold and dampness are thoroughly analyzed. The treatment of cold and dampness is warming yang and transforming qi.

The ugly year is too wet, and if it is baked, the moisture will be biased. Many diseases may be related to this moisture. If the human body is too wet, it will feel heavy and feel unable to drag its legs. Because human tissues are full of water. Moisture itself is water, and the weight is heavy. So the human body will feel heavy at this time. If the humidity is heavy, how to treat it? Sometimes the yang rises and the moisture turns into sweat and disappears, such as Wuling powder. Sometimes, when the yang drops, moisture will turn into urine and be excreted. For example, Sanren decoction is such a treatment. In addition, the methods can be bypassed by analogy without enumerating them one by one.

But it should be noted that the stool sticks to the toilet, not the moisture. Moisture dissolves in water and won't stick to the toilet. Insist on going to the toilet, mostly because there is heat in the intestine. When there is heat in the intestine, the intestinal tissue will secrete some mucus. In fact, after the heat bilges, intestinal tissue fluid is discharged. This situation belongs to heat, not moisture.