治两足血风疮，并两肩背风湿疮疼痒至骨。
马齿苋（切碎，焙干，五钱） 黄丹（飞） 黄柏 枯白矾 孩儿茶（各三钱） 轻
粉（一钱） 为末，和匀，后入轻粉，用生桐油调，摊于浓桐油纸上，用葱椒汤洗净患处，贴之。
夫严冬凛冽，万象收藏，犯之者反少，以其能知避也。若夫早晚寒热，风雨非时，
形寒饮冷，皆人自致之寒也。肺为脏首，受寒则喘嗽，气逆发热毛焦。胃为腑首，受寒
则呕逆恶心，渴烦发热，质薄者受即陡成，质浓者积久病发，如《经》曰∶冬伤于寒，
春必温病，此积久而发者也。如中寒之症，手足厥冷，寒颤口噤，口吐涎沫，不能啼哭
者，此受即陡成者也。更有胎中受寒，生下面色青白，四肢厥逆，盘肠气钓，噤口不
开，脏寒腹痛，而为胎寒者，此又积之最深者也。然寒症最类于热，因逼阳在外在上，
但知其显而不知其微，切宜深察。如脉数者，或饮水者，或烦渴动摇者，皆为热病。
若新咳嗽者，水液清澈，而尿不涩者，手足厥冷者，大便完谷不化，身凉不渴，脉迟
者，皆属寒症。但手足厥冷，固多属寒，间亦有阴阳偏倾，不能宣行，是以阳气蓄聚于
内，不能营运四肢，所谓热深厥亦深者，又宜细辨。故曰∶寒热如水火，误治即杀人。
丹溪曰∶寒症须投热药，然热药须加凉剂以向导之，或热药冷冻饮料，使同声易于相应，
《经》所谓从而逆之也。
治疗两足部的血风疮，以及两肩背部的风湿疮，疼痛瘙痒深入骨髓。
马齿苋（切碎，焙干，五钱） 黄丹（飞制） 黄柏 枯白矾 孩儿茶（各三钱） 轻粉（一钱）
研为细末，混合均匀，随后加入轻粉，用生桐油调和，涂抹在厚实的桐油纸上，用葱椒汤洗净患处后贴敷。
严冬时节气候凛冽，万物收敛闭藏，触犯寒气的人反而较少，因为人们知道躲避寒冷。至于早晚寒热交替，风雨不合时令，形体受寒或饮食生冷，这些都是人自己招致的寒邪。肺是五脏之首，受寒则出现气喘咳嗽，气机上逆、发热、毛发干枯焦躁。胃是六腑之首，受寒则呕吐逆气、恶心，口渴烦躁、发热，体质薄弱者受寒后立即发病，体质厚实者积久后才发病，如《内经》所说：“冬季感受寒邪，春季必定发生温病”，这是积久后才发作的情况。如果是中寒的病症，手足冰冷，寒战牙关紧闭，口吐涎沫，不能啼哭的，这是受寒后立即发病的情况。更有胎儿在母体内受寒，出生后面色青白，四肢厥冷，盘肠气痛牵引，口噤不开，脏腑虚寒腹痛，成为胎寒症，这又是寒气积聚最深重的情况。然而寒证最像热证，因为阳气被逼迫浮越于体表或上部，只看到表面的显象而不知内在的微细机理，务必仔细审察。如脉数者，或者想喝水者，或者烦躁口渴、身体动摇者，都属于热病。如果是新近发生的咳嗽，痰液清澈，小便不涩滞，手足厥冷，大便中有未消化的食物，身体凉爽且不口渴，脉迟者，都属于寒证。虽然手足厥冷大多属于寒证，但间或有阴阳偏倾，气机不能宣通运行，导致阳气蓄积在内，不能营运至四肢，这就是所谓的“热深厥亦深”的情况，又需要仔细辨别。所以说：寒证和热证如同水火，误治就会杀人。朱丹溪说：寒证必须投用热药，然而热药须配合凉剂作为引导，或者将热药冷冻后服用，使药性与病性同声相应，这正是《内经》所说的“顺从病势而逆治”的方法。
To treat blood-wind sores (blood-heat dermatitis) on both feet, and wind-damp sores with pain and itching penetrating to the bone on both shoulders and back.
Mache Chi Xian (Portulaca Oleracea Herb, chopped, dried in a warm oven, 5 qian), Huang Dan (Lead Tetroxide, refined), Huang Bo (Phellodendri Cortex), Ku Bai Fan (Alumen Calcined), Hai Er Cha (Catechu, each 3 qian), Qing Fen (Calomel, 1 qian).
Grind into fine powder, mix evenly, then add Calomel. Mix with raw Tung Oil, spread onto thick Tung Oil paper. Wash the affected area with Scallion and Pepper Decoction, then apply the plaster.
In severe winter, when the climate is biting and all things gather and store, those who contract cold are relatively few, because people know how to avoid it. However, cold and heat at dawn and dusk, wind and rain out of season, exposure to cold air, and consumption of cold drinks or food—all these are self-inflicted cold pathogens. The Lung is the head of the Zang organs; upon contracting cold, it causes wheezing and coughing, rebellious Qi, fever, and dry, brittle hair. The Stomach is the head of the Fu organs; upon contracting cold, it causes vomiting, nausea, thirst, irritability, and fever. Those with thin constitutions may develop symptoms immediately upon exposure, while those with robust constitutions may have symptoms manifest only after accumulation over time. As stated in the *Classic*: "If one is injured by cold in winter, one will surely suffer from warm diseases in spring." This refers to conditions that manifest after accumulation. For example, in cases of Cold Strike (Zhong Han), where there is coldness of the hands and feet, shivering, locked jaw, salivation, and inability to cry, this represents immediate onset upon exposure. Furthermore, there is congenital cold contracted in the womb, resulting in a bluish-white complexion, cold limbs, intestinal colic with drawing pain, locked mouth unable to open, abdominal pain due to visceral cold, known as Fetal Cold (Tai Han); this represents the deepest accumulation of cold. However, Cold patterns closely resemble Heat patterns because Yang Qi is forced outward and upward. One must observe not only the obvious manifestations but also the subtle internal mechanisms, requiring careful examination. For instance, rapid pulse, desire for water, irritability, thirst, and restlessness indicate Heat disease. Conversely, new-onset cough with clear sputum, non-astringent urination, cold limbs, undigested food in stool, cool body without thirst, and slow pulse all belong to Cold patterns. Although cold limbs mostly indicate Cold, occasionally Yin and Yang are imbalanced, preventing the smooth circulation of Qi. Thus, Yang Qi accumulates internally and cannot circulate to the four limbs, a condition known as "the deeper the heat, the deeper the cold extremities" (Re Shen Jue Ye Shen). This requires careful differentiation. Therefore, it is said: Cold and Heat are like water and fire; misdiagnosis can be fatal. Zhu Danxi stated: For Cold patterns, hot medicines must be administered. However, hot medicines should be combined with cooling agents as guides, or taken frozen, so that the medicine's nature resonates with the disease, which aligns with the *Classic*'s principle of "following the pathogenic factor while treating contrary to its nature."