风瘙痒者，表虚卫气不足，风邪乘之，血脉留滞，中外鼓作，变而生热，热即瘙痒。久
不瘥，淫邪散溢，搔之则成疮也。
防风汤淋洗方
防风 苦参 益母草（各三两） 白蒺藜（五两炒） 荆芥穗 蔓荆实 枳壳（各
每用三两，方一斗，煎至八升，乘热淋洗患处。
松叶酒方
松叶一斤，酒一斗，煮三升，日夜服，出汗。
胡麻散 治脾肺风毒，攻注皮肤，瘙痒，手足生疮，及遍身 ，发赤黑靥子
胡麻（炒令香熟） 枳壳（各二两） 防风 蔓荆实 威灵仙 苦参 川芎 荆
芥穗 何首乌（米泔浸透，去黑皮，炒干） 甘草（炙，各一两） 薄荷（半两）
上为散，每服二钱，温酒下。或炼蜜丸梧子大，每服三十丸。
洗方（思永堂松年大伯常用此方治遍身 作痒，以之浴身。后先父用之无不效
紫背浮萍（半碗） 草（一握） 蛇床子（五钱） 苍耳子（一两） 防风（五两） 煎汤熏洗数次，无不愈
者。
温气不一，有天之湿，雾露雨是也。天本乎气，故先中表之营卫。有地之湿，水泥是也
本乎形，故先伤皮肉筋骨血脉。有饮食之湿，酒水乳酪之类是也，伤于脾胃。有汗液之湿，
汗液亦湿也，止感于外。有人气之湿，太阴湿土之所化也，乃动于中。天之湿，汗之。地之
湿，渗之。饮食之湿，在上吐之，在中夺之，在下者引而竭之。汗液之湿，亦以汗取之。人
气之湿，属太阴所化，在气交之分。土兼四气，寒热温凉，升降浮沉，备在其中，当分上下
中外而治，以兼化四气，淫佚上下中外，无处不到也。大率在上则病头重胸满呕吐；在外则
身重肿胀；在下则足胫跗肿；在中则腹胀中满痞塞。其所用药，亦兼寒热湿凉以为佐使而治之。
湿之为病，有自外入者，有自内生者，必审其方土之病本。东南地下，多阴雨地湿，凡
从外入，多自下起，是以重腿香港脚者多，治当汗散，久者宜疏通渗泄。西北地高，人食生冷
湿面，或饮酒后寒气怫郁，湿不能越，或腹皮胀疼，甚则中满水蛊，或周身浮肿如泥，按
起，此皆自内而生者也。审其元气多少，而通利其二便，责其根在内者也。然方土内外，亦
互相有之，但多少不同，须对症施治，不可执一也。中湿与风寒气合者为痹，其寒多者为痛
，为浮肿，非术、附、桂不能去也。其风多者，为烦剧，为流走，非麻黄、薏苡、乌头不能
散也。其湿多者，为坚满，为气闭，非甘遂、葶苈、枳、术不能泄也。
风瘙痒，是由于体表虚弱、卫气不足，风邪趁机侵袭，导致血脉运行不畅、停滞，内外之气鼓动激荡，进而化热，热盛则引起瘙痒。如果久治不愈，病邪就会扩散溢出，抓挠后就会形成疮疡。
防风汤淋洗方：
防风、苦参、益母草（各三两），白蒺藜（五两，炒制），荆芥穗、蔓荆实、枳壳（各三两）。以上药材用水一斗，煎煮至八升，趁热淋洗患处。
松叶酒方：
松叶一斤，酒一斗，煮取三升，日夜服用，以出汗为度。
胡麻散：主治脾肺风毒，攻注于皮肤，引起瘙痒，手足生疮，以及全身出现赤黑色的斑点。
胡麻（炒至香熟）、枳壳（各二两），防风、蔓荆实、威灵仙、苦参、川芎、荆芥穗、何首乌（用米泔水浸泡透彻，去掉黑皮，炒干）、甘草（炙，各一两），薄荷（半两）。
将上述药物研为散剂，每次服用二钱，用温酒送服。或者炼蜜制成梧桐子大小的丸药，每次服用三十丸。
洗方（思永堂松年大伯常用此方治疗全身瘙痒，用来洗澡。后来家父使用此方，无不奏效）：
紫背浮萍（半碗），[原文此处缺字，推测为某种草药]（一握），蛇床子（五钱），苍耳子（一两），防风（五两）。煎汤熏洗数次，没有不痊愈的。
湿气的成因不一，有天之湿，如雾、露、雨；有地之湿，如泥土、水泥；有饮食之湿，如酒水、乳酪之类；有汗液之湿，汗液本身也是湿；有人气之湿，是由太阴湿土所化生的。
天之湿，源于天气，所以先侵犯体表的营卫之气。地之湿，源于地形，所以先损伤皮肉筋骨血脉。饮食之湿，伤害脾胃。汗液之湿，只感受于体表。人气之湿，属于太阴所化，动生于体内。
对于天之湿，用发汗法治疗。对于地之湿，用渗利法治疗。对于饮食之湿，在上焦的用吐法，在中焦的用消导法，在下焦的用引导排泄法。对于汗液之湿，也用发汗法取之。对于人气之湿，属于太阴所化，位于气机交争之分野。土性兼含寒、热、温、凉四气，具备升降浮沉的特性，治疗时应区分上中下、内外的部位来施治，以兼顾化解四气，因为湿气淫溢于上下内外，无处不到。
大抵而言，湿气在上则表现为头重、胸满、呕吐；在外则表现为身体沉重、肿胀；在下则表现为足胫和脚背肿胀；在中则表现为腹胀、中满、痞塞。所使用的药物，也需兼用寒、热、湿、凉的药物作为佐使来治疗。
湿邪致病，有从外侵入的，有从内生发的，必须审察其所在地区的病因本源。东南地区地势低洼，多阴雨地湿，凡是外感湿邪，多从下部开始，所以患下肢沉重、香港脚的人多，治疗应当用发汗疏散的方法，病程久的宜用疏通渗泄的方法。西北地区地势高，人们食用生冷湿面，或饮酒后寒气郁结，湿气不能发散，或者腹部皮肤胀痛，甚至出现中满、水蛊，或者周身浮肿如泥，按之凹陷不起，这些都是从内部产生的。审察元气多少，通利其二便，追究根源在于内部。然而，地域内外因素也是互相影响的，只是程度不同，必须对症施治，不可固执一端。中湿与风寒之气结合成为痹证，其中寒邪多的表现为疼痛、浮肿，非白术、附子、桂枝不能去除。风邪多的表现为烦躁剧烈、游走不定，非麻黄、薏苡仁、乌头不能消散。湿邪多的表现为坚硬胀满、气机闭塞，非甘遂、葶苈子、枳实、白术不能泄除。
Wind-induced pruritus arises from deficiency of the exterior and insufficiency of Wei Qi (Defensive Qi), allowing Wind pathogen to take advantage and invade. This leads to stagnation in the blood vessels, with internal and external forces stirring up, transforming into heat; excessive heat causes itching. If not cured for a long time, the pathogenic factor spreads diffusely, and scratching results in sores.
Fangfeng Tang Decoction for Washing:
Fangfeng (Saposhnikoviae Radix), Kushen (Sophorae Flavescentis Radix), Yimucao (Leonuri Herba) (each 3 liang); Baijili (Tribuli Fructus) (5 liang, stir-fried); Jingjie Sui (Schizonepetae Spica), Manjingzi (Viticis Fructus), Zhike (Aurantii Fructus Immaturus) (each 3 liang). Use one dou of water, decoct until eight sheng remain. Wash the affected area while hot.
Songye Jiu Formula:
Songye (Pinus Massoniana Needle) 1 jin, wine 1 dou. Boil to obtain three sheng. Take day and night until sweating occurs.
Huma San Powder:
Indicated for wind-toxin of the Spleen and Lung attacking the skin, causing pruritus, sores on hands and feet, and widespread red-black macules on the body.
Huma (Sesami Fructus, stir-fried until fragrant), Zhike (Aurantii Fructus Immaturus) (each 2 liang); Fangfeng (Saposhnikoviae Radix), Manjingzi (Viticis Fructus), Weilingxian (Clematidis Radix et Rhizoma), Kushen (Sophorae Flavescentis Radix), Chuanxiong (Ligustici Chuanxiong Rhizoma), Jingjie Sui (Schizonepetae Spica), Heshouwu (Polygoni Multiflori Radix, soaked in rice wash water until penetrated, remove black peel, stir-fry dry), Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) (each 1 liang); Bohe (Menthae Haplocalycis Herba) (0.5 liang).
Grind into powder. Take 2 qian per dose with warm wine. Alternatively, refine honey to make pills the size of wutong seeds; take 30 pills per dose.
Washing Formula (Uncle Songnian of Siyong Hall commonly used this formula to bathe the whole body for generalized pruritus. Later, my father used it with universal efficacy):
Zibei Fuping (Lemna Minoris Herba) (half bowl), [Text missing] (one handful), Shechuangzi (Cnidii Fructus) (5 qian), Cangerzi (Xanthii Fructus) (1 liang), Fangfeng (Saposhnikoviae Radix) (5 liang). Decoct in water for fumigation and washing several times; all cases were cured.
The origins of Dampness vary. There is Heavenly Dampness, such as fog, dew, and rain; Earthly Dampness, such as mud and cement; Dietary Dampness, such as alcohol, milk, and cheese; Sweat Dampness, as sweat itself is damp; and Human Qi Dampness, which is transformed by Taiyin Spleen-Damp Earth.
Heavenly Dampness originates from Qi, thus first affecting the Ying (Nutritive) and Wei (Defensive) Qi at the exterior. Earthly Dampness originates from Form, thus first damaging the skin, flesh, sinews, bones, blood, and vessels. Dietary Dampness injures the Spleen and Stomach. Sweat Dampness is only felt externally. Human Qi Dampness belongs to Taiyin transformation and moves internally.
For Heavenly Dampness, use diaphoresis (sweating method). For Earthly Dampness, use渗利 (draining/diuretic method). For Dietary Dampness, if in the Upper Jiao, use emesis; if in the Middle Jiao, use resolution/elimination; if in the Lower Jiao, guide and exhaust it. For Sweat Dampness, also use diaphoresis. For Human Qi Dampness, belonging to Taiyin transformation, it exists at the intersection of Qi. Earth combines the four Qi (Cold, Heat, Warm, Cool) and possesses ascending, descending, floating, and sinking properties. Treatment should distinguish between upper/middle/lower and interior/exterior to harmonize the four Qi, as Dampness permeates everywhere.
Generally, Dampness in the Upper Jiao causes heavy head, chest fullness, and vomiting; at the Exterior causes heavy body and edema; in the Lower Jiao causes swelling of the calves and dorsum of feet; in the Middle Jiao causes abdominal distension, fullness, and obstruction. Medications used must also combine Cold, Heat, Damp, and Cool properties as assistants and guides.
Disease caused by Dampness can enter from the exterior or arise from within; one must examine the local pathological basis. In the Southeast, where land is low and there is much rainy ground dampness, exogenous Dampness often starts from below, leading to many cases of heavy legs and Hong Kong foot (podagra/tinea pedis); treatment should involve diaphoresis and dispersal, and for chronic cases, dredging and draining. In the Northwest, where land is high, people eat cold, raw, and damp noodles, or after drinking wine, cold Qi becomes constrained, preventing Dampness from dispersing, leading to abdominal pain and distension, severe middle-fullness and ascites, or generalized edema like mud that indents upon pressure; these all arise from within. Examine the amount of Yuan Qi (Primary Qi), promote urination and defecation, and address the root within. However, factors inside and outside regions interact, differing only in degree. One must treat according to symptoms and not adhere rigidly to one method.
When Dampness combines with Wind-Cold Qi, it forms Bi Syndrome (Obstruction Syndrome). If Cold predominates, it causes pain and edema, requiring Baizhu (Atractylodis Macrocephalae Rhizoma), Fuzi (Aconiti Lateralis Radix Praeparata), and Guizhi (Cinnamomi Ramulus) to dispel it. If Wind predominates, it causes severe restlessness and wandering pain, requiring Mahuang (Ephedrae Herba), Yiyiren (Coicis Semen), and Wutou (Aconiti Radix) to scatter it. If Dampness predominates, it causes hardness and fullness, and Qi closure, requiring Gansui (Kansui Radix), Tinglizi (Descurainiae Semen et Lepidii Semen), Zhishi (Aurantii Fructus Immaturus), and Baizhu (Atractylodis Macrocephalae Rhizoma) to drain it.