In DING Yuanqing’ s opinion

acne belongs to yang syndrome and often pops up along three yang channel. Fire-heat

caused by block of qi movement of three yang

is the main reason of acne. The pathologic pathogenic key foundation is internal binding of fire and heat. And the pathologic foundations are heat bind

stasis obstruction and constraint toxin in three yang channel

steaming and accumulation in the skin. He treats acne by the theory of three yang according to different pathogenesis of fire-depression

fire-heat

fire-toxin and damp-heat. Treatment of acne of taiyang channel mainly used Mahuang Lianqiao Chixiaodou Decoction（ 麻黄连翘赤小豆汤）

Qiaohe Decoction（ 翘荷汤）

Xiexin Decoction（ 泻心汤）

Huanglian Jiedu Decoction（ 黄连解毒汤）; acne of yangming meridian mainly used Yinchenhao Decoction（ 茵陈蒿汤）

Gegen Qinlian Decoction（ 葛根芩连汤）

Taohe Chengqi Decoction（ 桃核承气汤） alone or combined with Yinchenhao Decoction（ 茵陈蒿汤）

Sanwubai Powder（ 三物白散） or Xiaoxianxiong Decoction（ 小陷胸汤）

Qingwei Powder（ 清胃散） combined with Shengma Biejia Decoction（ 升麻鳖甲汤）; acne of shaoyang meridian mainly used Chaihu Xianxiong Decoction（ 柴胡陷胸汤）

Chaihu Guizhi Decoction（ 柴胡桂枝汤）

Guizhi