Asthenia of both qi and blood refers to syndrome caused by simultaneous existence of qi asthenia and blood asthenia. This syndrome is usually caused by asthenia of qi and blood in chronic disease; or by asthenia of the spleen and stomach that affects the production of qi and blood; or by qi loss of blood followed by depletion of qi; or by qi asthenia followed by blood asthenia.

Clinical manifestations:
Lack of qi, no desire to speak, dispiritedness, fatigue, or spontaneous sweating, dizziness, palpitation, pale or sallow complexion, pale lips and nails, pale and tender tongue, thin and weak pulse.

Analysis of symptoms:
Lack of qi, no desire to speak, dispiritedness, fatigue or spontaneous sweating are due to hypofunction of viscera due to qi asthenia; pale or sallow complexion as well as pale lips and nails are due to inability of qi and blood asthenia to nourish the body; dizziness, palpitation and insomnia are due to the inability of qi and blood asthenia to nourish the head and heart spirit; pale and tender tongue as well as thin and weak pulse are signs of qi and blood asthenia.

Key points for syndrome differentiation:
Hypofunction of the viscera due to qi asthenia and inability to nourish viscera and body due to blood asthenia.