The etiology and pathogenesis of chloasma remain unknown up to now. It is held in modern medicine that chloasma is associated with disorder of endocrine. In clinic, chloasma is often seen in women with pregnancy or suffering from disease s of the female genital system, or after oral administration of contraceptives, etc. Traditional Chinese medicine holds that chloasma results mostly from stagnancy of the liver-Qi, blockage of Qi and blood in the face region, or deficiency of both the spleen and kidney, malnutrition of muscles and skin, etc. It is treated by external application of drugs, cryotherapy, laser radiation, etc., but without any ideal effect.
Acupuncture posses a certain effect in treatment of chloasma.
It can function in reinforcing and promoting circulation of Qi and blood, and is one important acupoint for cosmetology. But the therapeutic effect of acupuncture needs to be raised. We adopted acupoint injection with patient's own venous blood and got a significant effect. Its action mechanisms remain unknown. This method is simple, easy to be performed and works very well in treatment of chloasma.