Blood asthenia syndrome refers to asthenia syndrome caused by failure of insufficient blood to nourish viscera, meridians and tissues. This syndrome is usually caused by various chronic and acute bleeding, or by excessive contemplation and anxiety which have consumed blood, or by asthenia of the spleen and stomach which affect blood production, etc.

Clinical manifestations:
Pale or sallow complexion, pale eyelids, lips and nails, dizziness, palpitation, insomnia, numbness of hands and feet, scanty, pale and delayed menstruation, or even amenorrhea, pale tongue, and thin and weak pulse.

Analysis of symptoms:
Pale or sallow complexion as well as pale eyelids, lips and tongue are due to failure of asthenic blood to nourish the face; dizziness is due to asthenic blood to nourish the head; palpitation and insomnia are due to failure of asthenic blood to nourish heart spirit; numbness of hands and feet as well as pale nails are due to failure of asthenic liver blood to nourish tendons; scanty, pale and delayed menstruation or even amenorrhea is due to insufficiency of blood in uterus and thoroughfare and conception vessels; thin and weak pulses are signs of insufficiency of blood in the vessels due to blood asthenia.

Key points for syndrome differentiation:
Lack of proper nutrition of the body with the manifestations of pale complexion, eyelids, lips, tongue and nails as well as hypofunction of the organs with the symptoms of dizziness and palpitation, etc.