Dampness is categorized into internal and external dampness according to its cause. Internal dampness can be seen in chest tightness and abdominal distension, nausea and vomiting, loss of appetite, etc.; external dampness can be seen in fever and cold (fear of cold), heartburn, heaviness of the body. 1. Internal dampness is mainly caused by deficiency of the spleen and malfunction of water metabolism, with a variety of symptoms, such as tightness in the chest and abdominal distension, nausea and vomiting, loss of appetite, coughing and phlegm, dizziness, and heavy and painful limbs, and in severe cases, edema of the eyelids, face, and limbs. 2. External dampness is mainly caused by feeling summer dampness or dampness. External summer dampness is mainly seen fever and cold, heartburn, chest tightness, abdominal distension, nausea and vomiting, thirst, shortness of breath, fatigue, tiredness and weakness of the limbs, short and yellow urine, yellow tongue coating, pulse slippery and so on. In addition to dizziness and a feeling of heaviness around the body, external dampness can also be seen in joint pain, itchy skin, rashes, pale tongue, white moss, thick and greasy and other symptoms. It is recommended to consult a doctor in time, do not delay the condition.