Syndrome of disharmony between the heart and kidney refers to the symptoms of asthenia of heart and kidney yin and hyperactivity of heart and kidney yang due to imbalance between the heart and the kidney. This syndrome is usually caused by excessive contemplation; or by depression which transforms into fire to consume heart and kidney yin; or by overstrain, prolonged disease and intemperance of sexual life.
 
Clinical manifestations:
Restlessness and insomnia, palpitation and dreaminess, dizziness and tinnitus, amnesia, aching and weakness of loins and knees, seminal emission, feverish sensation over the five centers (palms, soles and chest), tidal fever and night sweating, dry mouth and throat, reddish tongue with scanty fur or without fur and thin and rapid pulse. Such symptoms are usually seen in neurasthenia, arrhythmia, cardiac neurosis, hypertension and hyperthyroidism.
 
Analysis of the symptoms:
Restlessness and insomnia, palpitation and dreaminess are caused by asthenia of heart and kidney yin and relative hyperactivity of yang which disturbs the mind; dizziness and tinnitus, amnesia, aching and weakness of loins and knees are caused by consumption of kidney yin, insufficiency of bone marrow and malnutrition of cerebral marrow and loins; seminal emission is caused by internal exuberance of asthenia fire which disturbs the kidney, feverish sensation over the five centers (palms, soles and chest), tidal fever and night sweating, dry mouth and throat, reddish tongue with scanty fur or without fur and thin and rapid pulse are the signs of yin asthenia and hyperactivity of fire.
 
Key points for syndrome differentiation:
This syndrome is marked by restlessness, insomnia, dreaminess, seminal emission, aching and weakness of loins and knees as well as manifestations of yin asthenia and hyperactivity of fire.