Heart yin asthenia syndrome refers to the syndrome caused by depletion of heart yin and internal disturbance of asthenic heat. This syndrome is usually caused by excessive contemplation which consumes heart yin; or by consumption of yin fluid at the advanced stage of febrile disease; or by deficiency of liver and kidney yin involving the heart.

Clinical manifestations:
Dysphoria, palpitation, insomnia, dreaminess, afternoon tidal fever, feverish sensation over five centers (palms, soles and chest), flushed cheeks, night sweating, reddish tongue with scanty saliva, thin and fast pulse, usually seen in viral myocarditis, chronic rheumatic heart disease, mitral valve prolapse syndrome, pericarditis, arrhythmia, cardiac neurosis and? rehabilitative stage of various infectious diseases.

Analysis of symptoms:
Palpitation is due to insufficiency of heart yin, lack of proper nutrition of the heart and irregular heart beating; dysphoria, insomnia and dreaminess are due to lack of proper nutrition of the heart, asthenic heat disturbing the heart and anxiety; feverish sensation over the five centers, afternoon tidal fever, flushed cheeks and night sweating are due to failure of yin to control yang and internal generation of asthenic heat; reddish tongue with scanty saliva and thin and fast pulse are signs of yin asthenia and internal heat.

Key points for syndrome differentiation:
Palpitation, dysphoria, insomnia, dreaminess, feverish sensation over the five centers, afternoon tidal fever and flushed cheeks.