Liver yang is an evidence of hyperactivity of the liver and kidney yin deficiency can not restrain the yang, so that the liver yang hyperactivity in the upper; or long-term anxiety and anger qi fire internal depression, the dark consumption of yin, yin deficiency can not control the yang. Chinese medicine believes that the normal human body for the balance of yin and yang state, yin and yang both opposing constraints, but also can be converted to maintain a dynamic state of equilibrium, when the yin weakness is not enough to constrain the yang, there will be a yang hyperactivity of the situation. When yin is weak and insufficient to restrain yang, yang will become overactive. Clinical manifestations of hyperactivity of liver yang are headache, dizziness, tinnitus, irritability, red face, red eyes, lightheadedness, weakness of the waist and knees, red tongue with little fluid, insomnia and dreaminess, and a stringy pulse or a fine number of strings. If you experience any of the above symptoms, you should seek medical attention.