Syndrome of liver yang hyperactivity refers to the syndrome marked by upper sthenia and lower asthenia due to consumption of liver and kidney yin, failure of yin to control yang and hyperactivity of liver yang. This syndrome is usually caused by impairment due to excessive rage, transformation of fire from qi stagnation and consumption of liver and kidney yin by fire and heat; or by excessive sexual intercourse that exhausts kidney yin; or by consumption of kidney yin due to senility and failure of water to nourish wood which lead to failure of yin to control yang and hyperactivity of liver yang.
 
Clinical manifestations:
Distending headache, dizziness, tinnitus, flushed cheeks and red eyes, irritability and susceptibility to rage, insomnia and dreaminess, aching pain and weakness of loins and knees, top-heaviness, reddish tongue with scanty fluid, taut pulse or taut and thin pulse. Such symptoms are?usually seen in hypertension, cerebral arteriosclerosis, Parkinson's disease, hyperthyroidism, neurasthenia, manic depression, migraine and climacteric syndrome, etc
 
Analysis of the symptoms:
Distending headache, dizziness, tinnitus, flushed cheeks and red eyes, irritability and susceptibility to rage, insomnia and dreaminess are caused by failure of liver and kidney yin to control liver yang and hyperactivity of liver yang due to consumption of liver and kidney yin; aching and weakness of loins and knees are caused by malnutrition of tendons and bones due to asthenia of liver and kidney yin; top-heaviness is caused by hyperactivity of liver yang and consumption of liver and kidney yin; reddish tongue with scanty fluid, taut pulse or taut and thin pulse are the signs of asthenia of liver and kidney yin and hyperactivity of liver yang.
 
Key points for syndrome differentiation:
Dizziness, distending headache, tinnitus, flushed cheeks and red eyes as well as top-heaviness and aching and weakness of loins and knees.