Kidney deficiency and liver fire can be generally categorized into kidney yin deficiency and kidney yang deficiency, with different types and symptoms. 1. Kidney-Yin Deficiency Liver-Fire Exuberance: It is often manifested as bitter mouth and dryness, dry mouth and nose, irritability, heat in the heart (heat in the hearts of the hands and feet, and self-consciousness of heat in the heart and chest), night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), hot flashes (bursts of fever), and so on. 2. Kidney-Yang deficiency with exuberant liver fire: often manifested as decreased libido, premature ejaculation, lumbar and knee soreness (a feeling of soreness and weakness in the lumbar and knee areas), dry mouth and bitter mouth, irritability, insomnia and dreaminess. If you have any of these uncomfortable symptoms, it is recommended that you seek prompt medical attention.