Traditional Chinese Medicine (TCM) believes that hot hands and feet and bitter mouth in sleep are mostly related to Yin deficiency of the liver and kidney (insufficient Yin in the liver and kidney) and hyperactive Liver-Yang (excessive Liver-Yang, which causes dizziness, dizziness, headache and other symptoms). According to Chinese medicine, Yin deficiency of the liver and kidney can cause inflammation of the deficiency fire, burning the liver meridian, leading to malfunction of the liver’s function of evacuation (the liver has the function of evacuating qi throughout the body), which further triggers the bile to go out of the normal way, overflowing in the mouth and triggering bitterness in the mouth. A deficiency of yin is associated with a relative hyperactivity of yang, which can manifest as heat in the hands, feet and heart. In addition, night sweats (abnormal sweating after going to sleep and stopping after waking up), dizziness, tinnitus and other manifestations can also occur. If you have any of the above symptoms, it is recommended to go to a regular hospital for consultation and treatment under the guidance of a specialized physician to identify the symptoms.