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The hiccups caused by epidemic febrile diseases (Shi Yi, epidemic warm diseases) differ from those in Cold Damage (Shang Han): Hiccups in Cold Damage may arise from deficiency, excess, cold, or heat patterns; whereas hiccups in epidemic febrile diseases are solely due to the accumulation of heat in the lower jiao. Whenever hiccups are observed, purgation should be employed immediately. If hiccups persist after purgation and hard, painful areas that resist pressure are found upon palpation of the umbilical and abdominal regions, purgation should still be continued; some patients may require purgation ten or more times before it ceases. In summary, once the accumulated heat is thoroughly cleared and the qi mechanism of the intestines and stomach becomes unobstructed, the hiccups will naturally stop. One must strictly avoid using Dingxiang Shidi Tang (Clove and Persimmon Calyx Decoction) to treat hiccups, lest the residual heat be retained, leading to a critical condition.

Vomiting roundworms (Tu Hui) in Cold Damage often presents as a complex pattern of cold and heat; however, vomiting roundworms in epidemic febrile diseases involves heat only, without cold. The treatment for this condition—whether employing diaphoresis (Han Fa), clearing (Qing), or purgation (Xia)—should primarily follow the general trend of disease transmission. Only Wumei (Mume Fructus) and Huanglian (Coptidis Rhizoma) should be added to calm the parasites. One must strictly avoid using the various acrid-warm herbs found in Wumei Wan (Mume Pill) to prevent the condition from becoming critical.

Treating epidemic febrile diseases prioritizes resolving pathogenic heat, which must have an exit route. When pathogenic heat resides on the exterior (muscle-surface), if diaphoresis is not used, there is no way for the pathogen to exit; thus, diaphoresis is one of the major methods for treating epidemic febrile diseases. However, while diaphoresis for Wind-Cold should not be delayed, diaphoresis for epidemic febrile diseases should not be performed too early. Diaphoresis for Wind-Cold must be combined with acrid-warm or acrid-hot herbs to disseminate Yang qi; diaphoresis for epidemic febrile diseases must be combined with acrid-cool or acrid-cold herbs to preserve Yin fluids. Diaphoresis for Wind-Cold treats the exterior without invading the interior; diaphoresis for epidemic febrile diseases treats the exterior while necessarily unblocking the interior. Their differences are such that when epidemic pathogens transmit to the exterior, mild cases can be resolved via diaphoresis using exterior-releasing herbs. In severe cases, even large doses of Mahuang (Ephedrae Herba), Qianghuo (Notopterygii Rhizoma et Radix), and Gegen (Puerariae Lobatae Radix) may fail to induce sweating, because the latent pathogen has emerged but not fully expressed. There are also cases where profuse spontaneous sweating occurs without using exterior-releasing herbs, yet the pathogen remains unresolved. This type of sweat arises from the steaming of internal heat郁闭 (stagnation); it is "pathogenic sweat," not "normal sweat." Recovery only occurs after the latent pathogen is fully expressed and both interior and exterior are thoroughly cleared, leading to either Zhan Han (shivering sweat) or Kuang Han (delirious sweat). This explains why "diaphoresis for epidemic febrile diseases should not be performed too early." Acrid-cool diaphoresis includes formulas such as Renshen Baidu San (Ginseng Detoxification Powder) and Jingfang Baidu San (Schizonepeta and Saposhnikovia Detoxification Powder); acrid-cold diaphoresis includes Da Qinglong Tang (Major Green Dragon Decoction), Jiuwei Qianghuo Tang (Nine-Ingredient Notopterygium Decoction), and Da Qianghuo Tang (Major Notopterygium Decoction); exterior-releasing combined with interior-unblocking includes Wu's Sanxiao Yin (Wu's Triple Elimination Drink), Liushentongjie San (Six-Awakening Unblocking Powder), and Fangfeng Tongsheng San (Saposhnikovia Unblocking and Generating Powder).

There are further cases where recovery occurs through spontaneous sweating without actively seeking diaphoresis. First, when internal heat closure is severe, using Dachengqi Tang (Major Order the Qi Decoction) to unblock the interior—if once is ineffective, twice; if twice is ineffective, three times—until the interior pathogen is completely expelled and the interior and exterior harmonize, Zhan Han (shivering sweat) often occurs, marking resolution. This is the first case of spontaneous resolution without seeking sweat. Second, when internal heat dryness is extreme, the patient desires cold water; after a long wait, sudden abundant drinking leads to profuse sweating upon putting down the cup, resulting in immediate resolution. This is the second case. Third, in patients with chronic Qi deficiency who fail to sweat despite repeated use of diaphoretic herbs, adding Renshen (Ginseng Radix) to exterior-releasing formulas induces immediate sweating upon completion of the dose. This is the third case. Fourth, in cases of Yin deficiency and blood loss reaching extreme depletion, exterior-releasing herbs produce no sweat; however, several doses of strong Yin-nourishing, moisture-moistening, and fluid-generating herbs induce profuse sweating like water. This is the fourth case.

In summary, the diaphoretic method for epidemic pathogens does not rely solely on ascending and releasing the exterior, but rather on unblocking stagnation and harmonizing Yin and Yang. Stagnation at the exterior is unblocked with acrid-cool or acrid-cold herbs; stagnation at the interior is unblocked with bitter-cold purgative herbs. For hyperactive Yang, drinking water nourishes Yin; for exhausted Yin, moistening remedies restore dryness. For Qi stagnation, guiding and opening methods are used; for Blood coagulation, stasis-resolving methods are applied. One must observe that there is absolutely no obstruction in the exterior or interior; only then is the diaphoretic method comprehensive. Thus, the principle of diaphoresis in epidemic febrile diseases differs from that in Wind-Cold.
Herein, various sweat-related syndromes are summarized and listed in detail: Fever, aversion to cold, absence of sweating, pain in the head and nape, back pain, lumbar pain, shoulder and arm pain, knee and shin pain, and pain throughout the body and joints.