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The disease of Wind-Dampness presents with symptoms such as headache, fever, slight sweating, aversion to wind, vexatious pain in the bone joints, heaviness of the body with slight edema, impaired urination, and a floating and moderate pulse. Luo Qianfu stated: During the transition between spring and summer, when people fall ill resembling Cold Damage (Shanghan), it is a syndrome of Wind-Dampness, and it is appropriate to use Wuling San (Five-Ingredient Poria Decoction) for self-healing. From this perspective, it goes without saying that the pathogenic factors of Wind-Dampness mostly injure the Taiyang (Greater Yang) channel. Treatment should employ the method of resolving both aspects of Taiyang to unblock the Bladder meridian and promote the fu-function of the Bladder organ. If Wind predominates, Qianghuo (Notopterygii Rhizoma et Radix) and Fangfeng (Saposhnikoviae Radix) should be used more frequently; if Dampness predominates, Lingzhi (Poria) and Zexie (Alismatis Rhizoma) should be added. For individuals with Yin deficiency presenting with a rapid pulse, Huangbai (Phellodendri Cortex) and Cheqianzi (Plantaginis Semen) are suitable; for those with Yang deficiency presenting with a slow pulse, Xintian (Epimedii Folium) and Fupian (Aconiti Lateralis Radix Praeparata) should be included. Physicians must always differentiate whether Wind or Dampness predominates, and distinguish between Yin deficiency and Yang deficiency, thereby avoiding therapeutic errors.

Yu Jiayan stated: When Wind-Dampness invades the human body, Wind affects the upper part first, while Dampness affects the lower part first, both entering through the Taiyang Bladder channel. Wind injures the Wei (Defensive) level, while Dampness remains in the joints. Wind, being Yang, tends upward; Dampness, being Yin, tends downward. Wind is formless and resides externally, while Dampness has form and resides internally. Between the upper and lower, inside and outside, the pathogens clash, manifesting as sweating, aversion to wind, shortness of breath, fever, headache, vexatious pain in the bone joints, and body heaviness with slight edema. This condition is indeed suitable for resolution through sweating. However, the method of inducing sweat differs from the routine method; it values slowness over haste. Haste causes Wind to leave but Dampness to remain, whereas slowness allows both Wind and Dampness to be expelled.

Lei Feng noted: In discussing Wind-Dampness, Mr. Yu Jiayan stands out as the foremost authority, clearly elucidating the pathology of the upper/lower and exterior/interior levels, effectively addressing the core issue. His discussion on the method of sweating, emphasizing slowness over haste, is truly the golden key to treating Wind-Dampness. Students should not neglect it because it seems simple.

Wang Shuhe's "Preface to Examples" states: After the Spring Equinox until before the Autumn Equinox, if the weather becomes suddenly cold, it belongs to the seasonal Cold Plague (Han Yi). Consulting the "Yi Zong Jin Jian" (Golden Mirror of Medicine), it is also stated: When spring should be warm but turns cold, it is named Cold Plague. Based on this, one might argue that this disease occurs in spring but not in summer or autumn. In fact, the coldness in summer belongs to the disease of Yin-Shu (Yin Summerheat), and the coldness in autumn belongs to the dry qi of autumn coolness. It is clear that summer and autumn do not suffer from Cold Plague; one should follow the instruction of "Yi Zong Jin Jian," which places Cold Plague in the spring season. Generally, "Yi" (Plague) implies "Yi" (Service/Labor), like being conscripted; roughly speaking, when many people suffer from similar illnesses, they can all be named Plague. This is vastly different from the "Yi" in Wen Yi (Warm Plague); one must know that Wen Yi is the fierce qi of heaven and earth, whereas Han Yi is an abnormal changing qi. At its onset, with headache, body pain, alternating chills and fever without sweating, or vomiting and regurgitation, and a floating-tight Renying (Carotid Artery) pulse, it is appropriate to treat with Acrid-Warm Exterior-Resolving methods. Observing these manifestations, they are no different from Winter Cold Damage initially affecting the Taiyang channel. Because it occurs in spring, it is not called Cold Damage; because the illness among the masses is identical, it is named Cold Plague. However, its treatment method is not far removed from that of Cold Damage. If complicated syndromes arise, one may imitate the treatment of Cold Damage.

A question was asked: The master stated that the coldness in summer is a disease of Yin-Shu. If, before the arrival of Minor Heat and Major Heat solar terms, one is exposed to the cold during Li Xia (Start of Summer), Xiao Man (Grain Buds), Mang Zhong (Grain in Ear), or Xia Zhi (Summer Solstice), can it be named Cold Plague? The answer is: Yes. Former sages said that when summer should be hot but turns cool, it is non-seasonal qi. If the manifestations indeed match those of Cold Plague, there is no harm in using formulas for Cold Plague. This is what is meant by going beyond the rules yet remaining within them.