Fire can be categorized into two main types: solid fire and deficiency fire, which can be heart fire, lung fire and so on. Different types have different clinical symptoms. 1. Heart fire (1) real fire: patients may manifest as irritability, insomnia, recurrent mouth ulcers, swollen and painful gums, dry mouth, short and red urine (urine is small in volume and dark yellow in color), etc. In severe cases, there may even be manic delirium, confusion. In severe cases, there may even be manic delirium, confusion, vomiting of blood, nosebleed, etc. (2) Deficiency fire: patients mainly manifest hot flashes (a burst of fever), night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), insomnia, palpitations (rapid heartbeat, often accompanied by panic), heartburn, dry mouth and throat, heat of the hands, feet and heart, emaciation, flushed cheekbones (reddish color of the zygomatic bone area on the two sides of the face), and so on. 2. Lung fire (1) Solid fire: the patient mainly manifests dry cough without phlegm or thick phlegm with yellow color, sore throat, dry stools, and so on. (2) Deficiency fire: patients mainly manifest dry cough without phlegm, hot flashes and night sweating, heat in the hands and feet, insomnia, etc. If you have any of the above discomforts, it is recommended to consult a doctor in time.