Raynaud’s syndrome is a vascular disorder affecting distal extremities

with arteriole spasms and blood-flow restrictions usually triggered by cold temperatures or emotional stress. The syndrome differentiation of TCM for Raynaud’s syndrome is mostly yang deficiency and cold stagnation

often treated with the method of warming the meridians

dissipating cold and unblocking the meridian. In this case

based on the close relationship between qi deficiency and yang deficiency

the treatment is mainly set on tonifying qi

and also activating blood. Modified Yupingfeng Powder was prescribed to warm and dissipate cold. Qi and blood was simultaneously emphasized to achieve the good effects.