In Traditional Chinese Medicine, edema is believed to originate from these organs: lung, spleen, and kidney. The basic principle is that when these organs fail to transport and transform body fluids, water is stored up all over the body and edema results.
In the practice of acupuncture, edemas are classified under either yin or yang disorders. Yang edemas are acute with quick onsets. They first start at the head and on the face before moving downwards.
Yin edemas have slow onsets. They start at the ankles and legs and are restricted to the lower part of the body.