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When the exterior Qi is deficient, wind-pathogens take the opportunity to invade, causing generalized and facial deficiency-type edema. After administering Wupi Decoction (Five-Bark Decoction) combined with Guizhi Tang (Cinnamon Twig Decoction) to induce slight sweating, the facial edema subsides; if body swelling persists, Weiling Tang (Weiling Decoction) should be used.
[Note] In children after smallpox, when the exterior Qi is weak and exposure to wind occurs too early, wind-pathogens enter due to the deficiency, causing facial puffiness and generalized edema. Initially, it is appropriate to use Wupi Decoction (Five-Bark Decoction) to induce slight sweating. After taking the medicine, if facial edema subsides but only generalized body swelling remains, Weiling Tang (Weiling Decoction) is the primary treatment.

Wupi Decoction (Five-Bark Decoction)
* *Cortex Lycii Radicis* (Digutpi)
* *Cortex Acanthopanacis Senticosi* (Wujia Pi)
* *Cortex Mori Radicis* prepared with honey (Sang Bai Pi, honey-fried)
* *Ramulus Cinnamomi* (Guizhi)
* *Pericarpium Zingiberis Recens* (Jiang Pi)
* *Fructus Citri Grandis* washed (Dafu Pi)
Reference: *Herba Centellae Asiaticae* (Dengxincao), decocted in water and taken orally.
[Prescription Song] For post-smallpox edema, Wupi Decoction is chosen,
With Lycium bark, Acanthopanax, and honey-fried Mulberry root.
Cinnamon twig, ginger peel, and broad-fruit citrus combine,
Boiled with centella herb, this remedy you shall find.

Weiling Tang (See "Diarrhea" chapter for prescription details).

Residual toxins remain unexpelled, generating smallpox-derived pathogens; mild cases manifest as furuncles, while severe cases form carbuncles. Internally, Jiedu Neituo Tang (Detoxification and Supportive Decoction) is applicable; externally, Hongyu Gao (Red Jade Ointment) is effective.
[Note] Residual toxins after smallpox arise because during the pustule-filling stage, toxic qi was abundant but not fully transformed, remaining stored in the meridians and accumulating without dispersing. Mildly, they erupt as furuncles; severely, they become carbuncles. They may appear in areas of thin muscle or at mobile joints. Regardless of whether they have ulcerated or not, Jiedu Neituo Tang (Detoxification and Supportive Decoction) is the primary internal treatment, applied externally with Hongyu Gao (Red Jade Ointment) on the affected area.

Jiedu Neituo Tang (Detoxification and Supportive Decoction)
* *Radix Astragali* raw (Sheng Huangqi)
* *Herba Schizonepetae* (Jingjie)
* *Rhizoma Saposhnikoviae* (Fangfeng)
* *Flos Forsythiae* decentered (Lianqiao, heart removed)
* *Radix Angelicae Sinensis* (Danggui)
* *Radix Paeoniae Rubra* (Chishao Yao)
* *Flos Lonicerae Japonicae* (Jinyinhua)
* *Radix Glycyrrhizae* nodes (Gancao Jie)
* *Herba Akebiae* (Mutong)
Decocted in water and taken orally.
[Prescription Song] Jiedu Neituo Tang is most efficacious,
Combined with Astragalus, Schizonepeta, and Saposhnikovia.
Forsythia, Angelica, and Red Peony root,
Along with Honeysuckle, Licorice, and Akevia, they unite.

Hongyu Gao (Red Jade Ointment)
* *Radix Lithospermi* (1 liang)
* *Flos Carthami Tinctorii* (1 liang)
* *Radix Angelicae Sinensis* (2 liang)
* *Cera Flava* (3 liang)
Use half a jin of sesame oil. First, fry the herbs until charred, remove the dregs, then add yellow beeswax to mix evenly. Allow to cool, then apply as a plaster to the affected area.

Eye diseases are often caused by wind-heat; smallpox toxins and stagnant fire attack upward into the eyes. Redness, swelling, dryness, and pain are treated with Xigan San (Liver-Washing Powder); corneal opacity covering the pupil is treated with Longdan Tang (Gentian Decoction).
[Note] Eye diseases indeed mostly originate from wind-heat. Smallpox contains intense heat that spreads from interior to exterior. If Qi and Blood are weak, they cannot expel the toxin outward, leading to stagnant fire attacking upward, thus causing eye disease. In cases of redness, swelling, pain, itching, tearing, and inability to open the eyes, Xigan San (Liver-Washing Powder) is the primary treatment. In cases of corneal opacity covering the pupil, itching, and photophobia, modified Longdan Tang (Gentian Decoction) is the primary treatment.

Xigan San (Liver-Washing Powder)
* *Radix Notopterygii* (Qianghuo)
* *Radix Angelicae Sinensis* tail (Gui Wei)
* *Rhizoma Saposhnikoviae* (Fangfeng)
* *Semen Gleditsiae Sinensis* processed kernel (Shanzhi Ren)
* *Flos Sparganii* (Gujing Cao)
* *Folium Menthae haplocalycis* (Bohe)
* *Radix Glycyrrhizae* raw (Sheng Gancao)
* *Radix Chuanxiong* (Chuanxiong)
Decocted in water, taken after meals.
[Prescription Song] Xigan San treats eye pain and soreness,
With Notopterygium, Angelica tail, and Saposhnikovia.
Gleditsia kernel and Sparganium flower join,
Mint, Licorice, and Chuanxiong complete the combination.

Longdan Tang (Gentian Decoction)
* *Rhizoma Saposhnikoviae* (Fangfeng)
* *Herba Equiseti Hiemalis* (Muzei Cao)
* *Flos Myricariae* (Mimenghua)
* *Exuviation Cicadae* (Chantui)
* *Fructus Viticis Expansa* (Manjingzi)
* *Radix Gentianae* (Longdan Cao)
* *Flos Chrysanthemi Indici* (Juhua)
* *Rhizoma Coptidis* (Huanglian)
* *Radix Angelicae Dahuricae* (Baizhi)
* *Fructus Tribuli Terrestris* (Jili)
Decocted in water and taken orally.
[Prescription Song] For opacity covering the eye, Longdan Tang is praiseworthy,
With Saposhnikovia, Equisetum, and Myricaria flower.
Cicada shell, Vitex, Gentian, and Chrysanthemum,
Along with Coptis, Angelica dahurica, and Tribulus, they are excellent.