夫身体发疮。皆是风热所为。然虚者易伤于邪。若重触风寒。则冷气入于疮。令血涩不
行。其疮则顽冷不知痛痒。亦经久难瘥。名为冷疮也。
治冷疮久不瘥。芜荑散方。
芜荑（一两微炒） 藜芦（一两去芦头） 薰黄（半两） 青矾（半两） 雄黄（半两
细研） 苦
参（三分锉） 附子（三分炮裂去皮脐）
上件药。捣罗为末。先以温水洗疮去痂。干拭。以生油调涂之。
治冷疮。发歇疼痛。脓水不止。生肌乌贼鱼骨散方。
乌贼鱼骨（一两烧令烟尽） 黄连（一分去须） 槟榔（一枚） 诃黎勒皮（一分） 白
龙骨（
一钱半） 赤石脂 麝香（一钱）
上件药。捣细罗为散。于乳钵内。入麝香龙骨赤石脂相和。研令匀。每用时。先暖盐浆
水洗疮。拭令干后。以散敷。日二用之。
治冷疮不瘥。神效槟榔散方。
槟榔（半两） 甘草（半两锉） 郁金（半两） 木香（半两） 黄连（半两去须） 麝
香（一分
细研）
上件药。捣细罗为散。研和令匀。先取砒霜少许安疮上。用生油调散敷之。有脓水。即
干掺于上如法系裹。日再换之。
治冷疮。疼痛不止方。
蛇床子（一两） 乳香（半两） 薤白（临时）
上二味。捣罗为末。入薤白捣。看稀稠得所。可疮上贴之。
治积年风冷疮疼痛。宜用此方。
麝香〔二（一）分〕 乳香（一分） 龙骨（一分）
上件药。都细研。用黄蜡。临时看疮口大小。于锅内熔蜡。如软面。入前药相和。热用
在疮口上。不过三两上瘥。
治冷疮。日夜发歇疼痛。附子散方。
附子（半两炮裂去皮脐） 川椒（一分去目） 白矾（三分烧令汁尽细研） 腻粉（二
钱） 雄
黄（一分细研）
上件药。附子椒二味。捣罗为末。次入白矾腻粉雄黄。相和令匀。每使时。以清麻油调
令得所。以敷疮上。日二换之。
又方。
龙骨（一两烧灰） 蜂窠（一两烧灰） 蛇床子（半两末）
上件药。都研令细。以生油调涂。日二换之。
凡是身体上发生疮疡，都是由于风热邪气所致。然而，体质虚弱的人容易受到外邪侵袭。如果再次遭受风寒的严重刺激，寒气就会侵入疮口，导致血液运行涩滞不畅。此时，疮口会变得坚硬冰冷，患者感觉不到疼痛和瘙痒，而且经久难以痊愈，这种病症被称为“冷疮”。
治疗经久不愈的冷疮，使用芜荑散方。
药材：芜荑（一两，微炒）、藜芦（一两，去芦头）、薰黄（半两）、青矾（半两）、雄黄（半两，细研）、苦参（三分，锉碎）、附子（三分，炮裂，去皮脐）。
制法与用法：将上述药物捣碎并过筛成粉末。先用温水清洗疮口，去除痂皮，擦干后，用生油调和药粉涂抹患处。
治疗冷疮，症状为发作时疼痛、脓水不止，具有生肌作用的乌贼鱼骨散方。
药材：乌贼鱼骨（一两，烧至烟尽）、黄连（一分，去须）、槟榔（一枚）、诃黎勒皮（一分）、白龙骨（一钱半）、赤石脂、麝香（一钱）。
制法与用法：将上述药物捣碎并过细筛成散剂。在乳钵中，将麝香、龙骨、赤石脂混合研磨均匀。每次使用时，先用温盐水浆清洗疮口，擦干后，将药散敷于患处，每日使用两次。
治疗冷疮久治不愈的神效槟榔散方。
药材：槟榔（半两）、甘草（半两，锉碎）、郁金（半两）、木香（半两）、黄连（半两，去须）、麝香（一分，细研）。
制法与用法：将上述药物捣碎并过细筛成散剂，研磨混合均匀。先取少许砒霜放置在疮口上，用生油调和药散敷在上面。如果有脓水流出，就直接干掺药粉在患处，并按常规方法包扎，每日更换两次。
治疗冷疮，疼痛不止的方剂。
药材：蛇床子（一两）、乳香（半两）、薤白（适量）。
制法与用法：将前两种药物捣碎过筛成粉末，加入薤白一起捣烂，调节稀稠度适宜，贴敷于疮口上。
治疗多年积累的风冷疮疼痛，宜用此方。
药材：麝香（二分或一分）、乳香（一分）、龙骨（一分）。
制法与用法：将上述药物全部细研。使用黄蜡，根据疮口大小临时决定用量，在锅内熔化黄蜡，呈软面状时，加入前面的药粉混合均匀，趁热敷在疮口上。不超过三两即可痊愈。
治疗冷疮，日夜发作交替疼痛的附子散方。
药材：附子（半两，炮裂，去皮脐）、川椒（一分，去目）、白矾（三分，烧至汁尽，细研）、腻粉（二钱）、雄黄（一分，细研）。
制法与用法：将附子和川椒两味药捣碎过筛成粉末，然后加入白矾、腻粉、雄黄，混合均匀。每次使用时，用清麻油调和至适宜程度，敷于疮口上，每日更换两次。
又一方。
药材：龙骨（一两，烧成灰）、蜂窠（一两，烧成灰）、蛇床子（半两，研成末）。
制法与用法：将上述药物全部研磨细腻，用生油调和涂抹，每日更换两次。
Whenever sores appear on the body, they are caused by Wind-Heat pathogenic factors. However, individuals with deficiency are prone to invasion by external pathogens. If severely exposed to Cold-Wind again, Cold Qi enters the sore, causing blood stasis and impaired circulation. Consequently, the sore becomes hard, cold, and insensate (loss of pain and itch sensation), and it is difficult to heal over a long period. This condition is named "Cold Sore" (Leng Chuang).
For treating chronic Cold Sores that fail to heal, use Wuyi San Powder Formula.
Herbs: Myristica Seed (Wuyi, 1 liang, lightly stir-fried), Veratrum Rhizome (Lilu, 1 liang, remove rhizome head), Realgar (Xunhuang, 0.5 liang), Green Vitriol (Qingfan, 0.5 liang), Realgar (Xionghuang, 0.5 liang, finely ground), Sophora Root (Kushen, 3 fen, chopped), Aconite Root (Fuzi, 3 fen, processed until cracked, skin and umbilical scar removed).
Preparation and Administration: Pound the above herbs and sieve them into powder. First, wash the sore with warm water to remove scabs, then dry thoroughly. Mix the powder with raw sesame oil and apply to the affected area.
For treating Cold Sores characterized by intermittent pain and continuous purulent discharge, promoting tissue regeneration, use Oyster Shell Powder Formula (Wuzeiyu Gu San).
Herbs: Cuttlefish Bone (Wuzeiyu Gu, 1 liang, burned until smoke ceases), Coptis Rhizome (Huanglian, 1 fen, remove roots), Areca Nut (Binglang, 1 piece), Chebula Fruit Peel (Helile Pi, 1 fen), White Dragon Bone (Bailonggu, 1.5 qian), Red Kaolin (Chishizhi), Musk (Shexiang, 1 qian).
Preparation and Administration: Pound the above herbs and sieve them into a fine powder. In a mortar, mix Musk, Dragon Bone, and Red Kaolin, grinding them evenly. For each application, first wash the sore with warm saline solution, dry it, and then apply the powder. Use twice daily.
For treating persistent Cold Sores, use the Highly Effective Areca Nut Powder Formula (Shenxiao Binglang San).
Herbs: Areca Nut (Binglang, 0.5 liang), Licorice Root (Gancao, 0.5 liang, chopped), Turmeric Tuber (Yujin, 0.5 liang), Aucklandia Root (Muxiang, 0.5 liang), Coptis Rhizome (Huanglian, 0.5 liang, remove roots), Musk (Shexiang, 1 fen, finely ground).
Preparation and Administration: Pound the above herbs and sieve them into a fine powder, mixing evenly. Place a small amount of Arsenic Trioxide (Pishuang) directly onto the sore, then cover with the powder mixed with raw sesame oil. If there is purulent discharge, sprinkle the dry powder directly onto the lesion and bandage as usual. Change the dressing twice daily.
For treating Cold Sores with unceasing pain.
Herbs: Cnidium Fruit (Shechuangzi, 1 liang), Frankincense (Ruxiang, 0.5 liang), Shallot Bulb (Xiebai, appropriate amount).
Preparation and Administration: Pound the first two herbs into powder, add Xiebai, and pound together until the consistency is suitable for topical application. Apply to the sore.
For treating chronic Wind-Cold Sores with pain accumulated over years, this formula is recommended.
Herbs: Musk (Shexiang, 2 fen or 1 fen), Frankincense (Ruxiang, 1 fen), Dragon Bone (Longgu, 1 fen).
Preparation and Administration: Finely grind all the above herbs. Use yellow beeswax; determine the amount based on the size of the sore. Melt the wax in a pot until it resembles soft dough, mix in the herbal powder, and apply while hot to the sore. Healing can be expected within no more than three liang of treatment.
For treating Cold Sores with intermittent pain occurring day and night, use Aconite Powder Formula (Fuzi San).
Herbs: Aconite Root (Fuzi, 0.5 liang, processed until cracked, skin and umbilical scar removed), Sichuan Pepper (Chuanjiao, 1 fen, remove seeds/eyes), Alum (Baifan, 3 fen, burned until liquid evaporates, finely ground), Calomel (Nifen), Realgar (Xionghuang, 1 fen, finely ground).
Preparation and Administration: Pound Fuzi and Chuanjiao into powder. Then add Baifan, Nifen, and Xionghuang, mixing evenly. For each application, mix with pure sesame oil to an appropriate consistency and apply to the sore. Change twice daily.
Another Formula.
Herbs: Dragon Bone (Longgu, 1 liang, burned to ash), Beehive (Fengke, 1 liang, burned to ash), Cnidium Fruit (Shechuangzi, 0.5 liang, powdered).
Preparation and Administration: Grind all the above herbs finely. Mix with raw sesame oil and apply. Change twice daily.