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Chi Bai You Feng (Red and White Wandering Wind) presents with skin lesions resembling millet grains, accompanied by edema, heat, pruritus, and pain. This condition arises from exterior deficiency allowing wind pathogen invasion; after long-standing stagnation, blood stasis turns red due to heat transformation, while qi stagnation turns white due to heat.

[Note] This syndrome manifests on the skin and muscles, wandering without a fixed location. It begins like cloud-like patches, featuring edema and heat, with both pain and itching coexisting, and raised areas resembling millet grains. The etiology involves dryness-heat in the Spleen and Lung, combined with exterior deficiency leading to loose Cou Li (skin texture and pores). Wind pathogens invade, stagnate for a long time, and contend with internal heat, causing the heat to intensify and form the disease. If the pathogen remains in the Blood level, it manifests as red; if it remains in the Qi level, it manifests as white, hence the name Chi Bai You Feng (Red and White Wandering Wind). Initially, Jing Fang Bai Du San (Schizonepeta and Saposhnikovia Decoction) is suitable for dispersing and resolving. For red lesions, Si Wu Xiao Feng Yin (Four Substances Wind-Extinguishing Drink) should be taken subsequently; for white lesions, Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction), added with Fang Feng (Saposhnikovia Root), Chan Tui (Cicada Slough), Jiang Can (Bombyx Batryticatus), and Sheng He Shou Wu (Prepared Polygonum Multiflorum Root), should be taken. Initially, beef slices can be applied topically to the affected area; pork or mutton are also acceptable. If the lesions wander too rapidly, Bian Fa (pricking or scraping therapy) should be used; if they remain stationary, Zhen Jun Miao Tie San (True Lord's Miraculous Pasting Powder) mixed with egg white should be applied externally. Methods for assessing favorable and unfavorable prognoses can be referred to in the Dan Du (Erysipelas) section. Avoid fishy smells, chicken, goose, and foods that stir wind or dry blood; violating these taboos will make recovery difficult.

Si Wu Xiao Feng Yin (Four Substances Wind-Extinguishing Drink)
Sheng Di Huang (Rehmanniae Radix Preparata, 3 qian)
Dang Gui (Angelicae Sinensis Radix, 2 qian)
Jing Jie (Schizonepetae Spica, 1.5 qian)
Fang Feng (Saposhnikoviae Radix, 1.5 qian)
Chi Shao (Paeoniae Radix Rubra, 1 qian)
Chuan Xiong (Ligustici Chuanxiong Rhizoma, 1 qian)
Bai Xian Pi (Dictamni Cortex, 1 qian)
Chan Tui (Cicadae Periostracum, 1 qian)
Bo He (Menthae Haplocalycis Herba, 1 qian)
Du Huo (Angelicae Pubescentis Radix, 0.7 qian)
Chai Hu (Bupleuri Radix, 0.7 qian)
Add two pieces of Red Date flesh, two cups of water, decoct until one-eighth remains, remove dregs, and take orally.

[Fang Ge - Formula Song] Si Wu Xiao Feng Yin harmonizes Ying (Nutritive) Qi; when blood is nourished, wind decreases and redness subsides. Jing Jie, Fang Feng, Bai Xian Pi, Chan Tui, and Du Huo are combined; Chai Hu, Bo He, and Red Dates are decocted in water to a concentrated strength.

Jing Fang Bai Du San (See Neck Carbuncle Section)
Bu Zhong Yi Qi Tang (See Ulcer Section)
Zhen Jun Miao Tie San (See Swelling/Ulcer Section)

Zi Bai Dian Feng (Purple and White Vitiligo/Mottling) lacks pruritus and pain. White spots result from Qi stagnation, while purple spots result from Blood coagulation. In constitutions with heat, invasion by wind pathogens combined with dampness obstructs hair follicles, leading to macular eruptions.

[Note] This syndrome is commonly known as "sweat spots" (Tinea Versicolor), existing in purple and white varieties. Purple is caused by Blood stagnation; white is caused by Qi stagnation. Generally, it results from heat constitution where wind pathogens and dampness invade the pores, condensing with Qi and Blood, closing the hair follicles. It mostly occurs on the face and neck, spreading in migrating spots into patches. Initially, there is no pain or itching, but mild itching may develop over time. Initially, Wan Ling Dan (Myriad Spirits Pill) should be used to induce sweating, followed by regular oral administration of Hu Ma Wan (Sesame Pill). Externally, Mi Tuo Seng San (Lead Monoxide Powder) should be rubbed onto the affected area to induce sweating, thereby resolving wind-dampness. Although ancient and modern treatments are numerous, few achieve success. Patients with this condition must avoid fishy smells, fried foods, strong alcohol, and foods that stir wind or trigger outbreaks.

Hu Ma Wan (Sesame Pill)
Da Hu Ma (Semen Sesami Nigrum, 4 liang)
Ku Shen (Sophorae Flavescentis Radix, 2 liang)
Fang Feng (Saposhnikoviae Radix, 2 liang)
Shi Chang Pu (Acori Tatarinowii Rhizoma, 2 liang)
Wei Ling Xian (Clematidis Radix, 2 liang)
Bai Fu Zi (Typhonii Rhizoma, 1 liang)
Du Huo (Angelicae Pubescentis Radix, 1 liang)
Gan Cao (Glycyrrhizae Radix et Rhizoma, raw, 5 qian)
Grind all ingredients into fine powder. Mix with wine and water paste to form pills the size of mung beans. Take 2 qian per dose; for emaciated individuals, take 1.5 qian. Swallow with warm boiled water after meals and before bedtime.

[Fang Ge - Formula Song] Hu Ma Wan treats Purple and White Vitiligo, removing wind-dampness to prevent spread. Ku Shen, Bai Fu Zi, Fang Feng, and Gan Cao are used; Shi Chang Pu, Du Huo, and Wei Ling Xian complete the formula.

Mi Tuo Seng San (Lead Monoxide Powder)
Xiong Huang (Realgar, 2 qian)
Liu Huang (Sulfur, 2 qian)
She Chuang Zi (Cnidii Fructus, 2 qian)
Mi Tuo Seng (Litharge, 1 qian)
Shi Huang (Orpiment, 1 qian)
Qing Fen (Calomel, 0.5 fen)
Grind together into powder. Mix with vinegar and apply topically to the affected area.

[Fang Ge - Formula Song] Mi Tuo Seng San treats wind-damp skin diseases; entering the Cou Li, it resolves purple and white macules. Xiong Huang, Liu Huang, Qing Fen, and She Chuang Zi, along with Shi Huang, are ground into powder and applied with vinegar for cure.

Wan Ling Dan (Myriad Spirits Pill) (See Swelling/Ulcer Section)