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Wang Kentang stated: Yangfeng (Ulcerative Wind) is caused by wind pathogens and accumulated heat residing in the lungs and intestines. Over time, they fail to dissipate and overflow into the skin, causing mottled, connected spots on the sides of the neck, chest, and axillae. The color is slightly white and round, though purple variants exist. These lesions are typically painless and non-pruritic. In all such cases, wind and heat lie concealed between the muscle layers (Ji Cou), leading to disharmony of Qi and Blood, which generates this disease. (From *Yixue Zhunsheng*)

Zidian Feng (Purple-White Vitiligo) [Image Placeholder]

Chen Shigong stated: Zidian Feng (Purple-White Vitiligo) refers to two distinct manifestations occurring on the same body. The purple hue results from blood stasis, while the white hue results from Qi stagnation. Generally, it is caused by a constitution prone to heat combined with invasion by wind-dampness, causing pore constriction and obstruction of Qi and Blood circulation. These conditions usually arise from external pathogenic invasion. In the initial stage, Wanling Dan can be used to induce sweating and disperse the pathogen. (From *Waike Zhengzong*)

Vitiligo Wine Formula
* Sophorae Root Cortex (Kushen), 5 jin
* Crab Spider Nest (Lufengfang), 5 liang
* Tribuli Fructus Peel (Ciji Pi), 1 piece

Cut the above herbs into pieces. Boil in three dou of water until reduced to one dou. Strain and retain the decoction. Add five jin of fine wine starter culture to three dou of steamed millet cooked as rice, mix with the starter, and combine with the herbal decoction. Ferment according to standard wine-making methods. Once fermented, press to remove the lees. Take one or two cups warm before meals.

Sanwei Huang Wan (Attributed to Zhang Zhongjing.)
* Astragali Radix (Huangqi), 3 liang
* Xanthii Fructus (Cangerzi), 1 liang
* Saposhnikoviae Radix (Fangfeng), 3 qian

Make pills using the water-pellet method. Take 3 qian with rice broth.

Vitiligo on Hands Formula
Take one plant of Impatiens balsamina (Fengxianhua). Place it with soil into a clay pot, boil, and wash the affected area with the liquid.

Purple-White Vitiligo and Tinea Versicolor Formula (Attributed to Zhang Zhongjing.)
* Realgar (Liuhuang), 1 qian
* Litharge (Miduoseng), 1 qian
* White Arsenic (Bai Pi), 6 fen

Grind into a fine powder. Mix with aged vinegar and apply/rub onto the lesion.

Alternative Method
* Aconiti Kusnezoffii Radix Preparata (Baifuzi) and Realgar (Liuhuang) in equal parts. Grind into a fine powder. Mix with ginger juice. Dip eggplant calyxes into the mixture and rub onto the lesion.

Soap Formula
* Angelicae Dahuricae Radix (Baizhi), Shan Nai, Gleditsiae Sinensis Fructus (Zaojiao), Nardostachyos Radix et Rhizoma (Gansong), each 2 qian
* Aconiti Kusnezoffii Radix Preparata (Baifuzi), Borneolum Syntheticum (Chaonao), Broussonetiae Fructus (Chushizi), Mung Bean Powder (Lvdoufen), Litharge (Miduoseng), each 1 qian

Grind into a fine powder. Take one jin of soap free of rinds and strings, pound evenly, and use to scrub the affected area.

Alternative Method
* White Arsenic (Bai Pi), 2 qian
* Fritillariae Thunbergii Bulbus (Chuanbeimu), Angelicae Dahuricae Radix (Baizhi), each 5 fen
* Realgar (Xionghuang), 1 qian
* Aconiti Kusnezoffii Radix Preparata (Baifuzi), 1.5 qian

Grind into a fine powder. Mix with the white of a black hen's egg and rub onto the lesion.

Vitiligo Formula (Attributed to Sun Simiao.)
Realgar (Liuhuang) and Alum (Mingfan) in equal parts. Grind into a fine powder and apply to the lesion.

Dianfeng Formula (Attributed to Li Shizhen.)
Use eggplant calyxes dipped in Realgar (Liuhuang) powder to rub the lesion, utilizing its blood-dispersing properties. For vitiligo (white patches), use white eggplant calyxes; for purple dianfeng, use purple eggplant calyxes. This follows the principle of "like attracts like."

Ziyun Feng Formula
Dry Lepidium apetalum (Zibei Fuping) in the shade, 1 liang. Realgar (Liuhuang), 5 fen. Grind into a fine powder. Mix with sesame oil and rub onto the lesion.