湿由脾气虚弱，不能运化以行水，水性凝滞不动，日久腐化，转侵脾土，以成种种湿症之象也。其症象面色暗
白，皮肤粗糙不润，口唇晦紫而不红活，或痰易动而不化，或食饮稍伤，立即泄泻，或下利清水，或呕吐酸腐，
或身体发热而易汗，或四肢倦怠而头重，凡此等症象，均为脾湿症也。治法以苍术、白术为主药，加土炒杭芍、
木瓜片、花槟榔、半夏曲、广陈皮、赤茯苓、车前草、炙甘草、乌梅药等药，加水煎成浓汁，乘温服之，定能
渗湿起脾也。如伤停水，脾气不能运化，因之生痰饮者，治法宜用消导二陈汤，加炮姜、姜竹茹，炒枳壳，即可
导行痰饮，而消食健脾也。其消导二陈汤方列后∶
消导二陈汤方
茅苍术（一钱） 焦白术（一钱） 广陈皮（钱半） 半夏曲（二钱） 茯苓块（二钱） 炒神曲（二钱）
西砂仁（一钱） 炙甘草（五分） 以上各药共享水二茶碗，煎成浓汁四分之三茶碗一次与服。此药为五岁上
下小儿服剂，若一岁上下小儿须减半。如四肢身体面部等处，生有癣及湿疮，是脾湿外出，湿气散化象。切不
可皮肤外间用药涂擦，以截遏湿的出路，只可内服清热利湿药，脾间气化一通，湿即随气而散。其皮肤外部无
根之湿毒，不用治自能干痂而愈也。
Dampness originates from the deficiency of Spleen Qi, which fails to transform and transport fluids for normal circulation. The nature of water is stagnant and immobile; over time, it putrefies and transforms, invading the Spleen Earth, thereby forming various manifestations of Dampness syndromes. Its symptoms include a dark and pale complexion, rough and unmoistened skin, dull purple lips that are not ruddy and vibrant, or phlegm that is easily generated but difficult to resolve, or immediate diarrhea with slight dietary injury, or passage of clear watery stools, or vomiting of sour and putrid food, or body fever accompanied by easy sweating, or limb fatigue with heavy head. All such symptom manifestations belong to Spleen Dampness syndromes. The treatment method uses Cangzhu (Atractylodis Rhizoma) and Baizhu (Atractylodis Macrocephalae Rhizoma) as principal herbs, added with Tu Chao Hang Shao (Earth-fried Paeoniae Radix Alba), Mugua (Chaenomelis Fructus), Hua Binglang (Arecae Semen cum Endocarpo), Banxia Qu (Fermented Pinelliae Tuber), Guang Chenpi (Citri Reticulatae Pericarpium), Chi Fuling (Poria with Red Core), Cheqiancao (Plantaginis Herba), Zhi Gancao (Honey-fried Glycyrrhizae Radix et Rhizoma), and Wumei (Mume Fructus), among others. These are decocted in water into a concentrated liquid and taken while warm, which will surely leach out dampness and invigorate the Spleen Yang. If food stagnation and water retention occur, and Spleen Qi fails to transform them, leading to the generation of Phlegm-Fluids, the treatment method should employ Xiaodao Erchen Tang (Digestion-Assisting Two-Aged Decoction), added with Pao Jiang (Prepared Zingiberis Rhizoma), Jiang Zhuru (Bamboo Shavings with Ginger), and Chao Zhiqiao (Stir-fried Aurantii Fructus Immaturus), which can guide the discharge of Phlegm-Fluids and eliminate food stagnation while strengthening the Spleen. The formula for Xiaodao Erchen Tang is listed below:
Xiaodao Erchen Tang Formula
Maocangzhu (1 qian) Jiaobaizhu (1 qian) Guangchenpi (1.5 qian) Banxiaqu (2 qian) Fulingkuai (2 qian) Chao Shenqu (2 qian)
Xisharen (1 qian) Zhi gancao (0.5 qian) All the above herbs are shared with two tea bowls of water, decocted into three-quarters of a tea bowl of concentrated liquid, and administered at one time. This dosage is for children around five years old; for children around one year old, the dose must be halved. If tinea and eczema appear on the limbs, body, face, etc., this is the outward manifestation of Spleen Dampness dispersing. One must absolutely avoid applying external medications to the skin surface to block the exit path of dampness; instead, only internal administration of Qingre Lishi (Clear Heat and Promote Urination to Drain Dampness) herbs is permissible. Once the Qi transformation within the Spleen is unblocked, dampness will dissipate along with the Qi movement. External damp-toxins without roots on the skin surface will naturally scab and heal without treatment.