What is Qi Stagnation and Blood Stasis?
Blood stasis is a pathological condition in Traditional Chinese Medicine (TCM). TCM holds that “Qi commands blood, while blood nourishes Qi”—that is, Qi and blood are interrelated and mutually dependent.Emotional depression (internal factor) or physical trauma (external factor) may lead to Qi stagnation and subsequent blood stasis; these two conditions influence each other reciprocally. Prolonged emotional depression impairs the smooth flow of Qi and blood, resulting in internal blood stasis.
Internal blood stasis may also arise from external injury or accumulation of phlegm-dampness, both of which obstruct normal blood circulation and thereby contribute to Qi stagnation. Consequently, Qi stagnation and blood stasis frequently co-occur clinically, and treatment commonly employs methods that promote Qi movement and resolve blood stasis.
The primary manifestation is obstruction—clinically presenting predominantly as pain. Pain due to Qi stagnation is typically characterized by wandering or migratory discomfort, whereas pain arising from blood stasis tends to be fixed and localized. Thus, although Qi stagnation and blood stasis often occur simultaneously, they may also manifest independently.