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Tianpao (Blistering Disease) arises from the reckless movement of Heart Fire, accompanied by Spleen Dampness. Its presentation varies between the upper and lower body, with slight differences in cold-heat patterns depending on the season. For lesions on the upper body, Wind-Heat predominates over Damp-Heat; cooling the blood and dispersing Wind is appropriate. For lesions on the lower body, Damp-Heat predominates over Wind-Heat; promoting diuresis to leach out Dampness should be prioritized. Externally applying Hu Fen San (Lead Powder Powder) or Shi Zhen San (Stone Treasure Powder) will lead to spontaneous recovery. If not treated early, it may transform into stubborn Feng Zhan (Wind Purpura), which is difficult to cure.

Jiedu Xiexin Tang (Detoxifying Heart-Purging Decoction)
Jiedu Xiexin Tang consists of Huangqin (Scutellariae Radix), Huanglian (Coptidis Rhizoma), Jingjie (Schizonepetae Herba), Fangfeng (Saposhnikoviae Radix), Niubangzi (Arctii Fructus), Shigao (Gypsum Fibrosum), Shanzhi (Gardeniae Fructus), Huashi (Talcum), Xuanshen (Scrophulariae Radix), Gancao (Glycyrrhizae Radix et Rhizoma), Mutong (Akebiae Caulis), and Zhimu (Anemarrhenae Rhizoma), decocted together.
It treats Tianpao erupting all over the body caused by excessive Fire in the Heart Meridian during hot summer weather.
Ingredients: Huanglian, Fangfeng, Jingjie, Shanzhi, Huangqin, Niubangzi, Huashi, Xuanshen, Zhimu, Shigao (each 1 qian); Gancao, Mutong (each 0.5 qian).
Decoct with 2 zhong of water and 20 stalks of Dengxincao (Junci Medulla) until reduced to 0.8 zhong; take after meals.

Qingpi Ganlu Yin (Spleen-Clearing Sweet Dew Drink)
Qingpi Ganlu Yin consists of Yichen (Artemisiae Scopariae Herba), Baizhu (Atractylodis Macrocephalae Rhizoma), Shengdi (Rehmanniae Radix), Lianqiao (Forsythiae Fructus), Huangqin, Shanzhi, Chifuling (Poria cum Rosa), Maidong (Ophiopogonis Radix), Zexie (Alismatis Rhizoma), Cangzhu (Atractylodis Rhizoma), Zhike (Aurantii Fructus Pericarpium), Xuanmingfen (Mirabilite), and Gancao, decocted together with Dengxincao.
It treats Tianpao arising from stagnant and obstructed Damp-Heat in the Spleen Meridian, predominantly affecting the lower body and accompanied by pain.
Ingredients: Baizhu, Chifuling, Shanzhi, Yichen, Maidong, Shengdi, Huangqin, Zhike, Cangzhu, Zexie, Lianqiao, Gancao, Xuanmingfen (equal parts).
Decoct with 2 zhong of water, 20 leaves of Zhuye (Bambusae Folium), and 20 stalks of Dengxincao until reduced to 0.8 zhong; take before meals.

Hu Fen San (Lead Powder Powder)
Hu Fen San is used to treat Tianpao sores. It uses Hangfen (prepared Lead Powder), Qingfen (Calomel), Shigao, and Gafen (Margarita) ground into a fine powder, mixed with Sigua juice (Luffae Fructus Juice) for unparalleled efficacy.
It treats Tianpao characterized by redness, swelling, heat, acute distension, and pain. Puncture with a needle and apply this powder.
Ingredients: Hangfen (1 liang), Qingfen, Shigao, Gafen (each 3 qian).
Grind extremely finely, dry the lesion surface, and apply this powder. Alternatively, crush Sigua leaves to extract juice and mix for topical application. In winter when Sigua leaves are unavailable, use Qinggang juice (indigo dye vat liquid) for mixing and application.

Shi Zhen San (Stone Treasure Powder)
Shi Zhen San contains Shigao and Qingfen, supplemented with Qingdai (Indigo Naturalis) and Huangbai (Phellodendri Cortex) powder. Applied topically, the disease resolves spontaneously.
It is suitable for chronic Tianpao that has ulcerated, causing unceasing pain and dripping pus.
Ingredients: Shigao, Qingfen (each 1 liang), Qingdai, Huangbai powder (each 3 qian).
Grind all ingredients finely together. Clean the lesion with Gancao decoction, then apply this powder; pain will cease immediately.