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Hu huo disease, named for the meaning of hesitation and indecision, refers to a state of being unable to advance or retreat. These conditions are mostly caused by dampness and all belong to the category of worm syndromes (worm-related disorders). There is heat in the abdomen, food intake is low, the intestines and stomach are empty, and the three types of worms (roundworms, white worms, flesh worms) seek food and devour the five zang organs. The manifestations include: heaviness in the four limbs, aversion to the smell of food, silence with a desire to sleep but eyes closed, white tongue coating, and dull teeth; the complexion changes unpredictably between red, white, and black. If the worms erode the lower part (genital area), it is called "Hu," characterized by sores on the lower lip and dry throat. If the worms erode the internal organs, it is called "Huo," characterized by hoarseness. For both conditions, Huanglian Xijiao Dihuang Tang (Coptis Rhizome, Rhinoceros Horn, and Rehmannia Decoction) added with Tao Ren (Peach Seed) is used universally; even Yue Ren (Bian Que, an ancient famous physician) would feel intimidated upon seeing it. In Jueyin disease, xiaoke (wasting-thirst syndrome) presents with qi rushing up to strike the heart, hunger without desire to eat, and vomiting roundworms immediately after eating. Although it is stated as stomach cold, why is there also xiaoke? This is because heat resides in the Upper Jiao, while the Middle and Lower Jiao present only with cold and no heat. Additionally, for patients with solid stool constipation, Lizhong Tang (Regulate the Middle Decoction) added with Dahuang (Rhubarb Root and Rhizome) and a small amount of honey is used to induce mild purgation.

Baihe disease occurs because the hundred vessels share one source, and the entire body is affected by the illness, meaning there is no longer a sequential transmission through the meridians. This condition arises after major illnesses or consumptive diseases when the zang-fu organs become imbalanced. It presents with symptoms resembling chills but without actual cold signs, resembling fever but without actual heat signs; desire to eat but inability to do so, desire to sit but inability to remain seated, desire to walk but inability to move. Other symptoms include bitter taste in the mouth, red urine, immediate vomiting or diarrhea after taking medicine, and a slightly rapid pulse. If headache occurs during urination, recovery takes sixty days; if there is no headache but only a sensation of chilliness, recovery takes forty days; if urination brings relief but dizziness occurs, recovery takes twenty days. All these scenarios are treated with Baihe Zhimu Dihuang Tang (Lily Bulb, Anemarrhena, and Rehmannia Decoction).

Hui jue (Roundworm syncope) occurs in Jueyin disease patients who inherently have cold. Erroneous use of sweating methods, or sweating again after fever persists post-sweating, leads to deficiency-cold in the stomach. Patients feel hungry but cannot eat; upon eating, they vomit roundworms. The condition alternates between quietness and irritability; roundworms may ascend or stop moving. Roundworms emerge upon smelling food. The treatment method is described in previous sections.

Excessive heat causing irritability, with naturally warm hands and feet, and a floating and tight pulse, indicates wind-injury accompanied by cold. Lack of irritability, slight fever, slightly cold four limbs, and a floating and moderate pulse indicate cold-injury accompanied by wind. Both conditions involve simultaneous disease of Ying (Nutritive Qi) and Wei (Defensive Qi). Although Da Qinglong Tang (Major Green Dragon Decoction) could theoretically be used, this formula is harsh and dangerous, and should not be used lightly. It is only suitable when both wind and cold pathogens are strong and accompanied by irritability. In comparison, Qianghuo Chonghe Tang (Notopterygium Harmonizing Decoction) is considered a miraculous remedy.