新愈之后，脏腑气血皆不足，营卫未通，肠胃未和，惟以白粥静养。若过食胃弱难消，因复烦热，名曰
食复。若过劳役，复生烦热，名曰劳复。劳复者，宜枳实桅子豉汤汗之。食复者，宜枳实栀子豉汤加大黄下
之。凡复作之证，脉浮有表者。宜枳实栀子豉汤以汗解之。脉沉有里者，宜枳实栀子豉汤加大黄以下解之。
若无表里证者，宜小柴胡汤以和解之。若口燥烦渴喜呕者，宜竹叶石膏汤主之。若内伤气虚劳复者，宜补中益
气汤主之。若犯内事阴亏者，宜六味干地黄汤，气少者，倍加人参汤主之。
男女新愈，交接因而复病，名曰房劳复。男女新愈交接，病男传不病之女，病女传不病之男，名曰阴
阳易，即交易之义也。犯是病者，男以女之 裆，女以男之 裆，烧灰，白汤、或酒日三服之则愈。少腹急
痛，牵引阴中，身重少气，头目眩晕，四肢拘挛，热气冲胸，是其证也。
易愈之病，取于神，则神清；取于色，则色泽；取于声，则声长；取于身，则身轻；取于肤，则肤
润；取于脉，则脉和；皆一派不死之生证也。若有是生证，忽然口噤不语，烦躁益甚，六脉停伏，宜谨察之
，非变凶也，乃邪正交争，生战汗之候，为将愈之兆也。凡伤寒渴者，多阳证易愈。若忽然饮倍寻常，消
散无停，知酿汗而作解也。伤寒多不能食，若忽然能食，且脉浮，知胃和，邪还于表而作解也。若不即解者
，阴阳未得其时。子时得之，午时必解，阳济阴生而解也。午时得之，子时必解，阴从阳化而解也。
病后初愈阶段，脏腑与气血均处于虚弱状态，营卫之气尚未通畅，肠胃功能也未调和，此时应以白米粥静养为主。如果进食过多，因胃气虚弱难以消化，导致再次出现烦热症状，称为“食复”。如果过度劳累，导致再次产生烦热，称为“劳复”。对于劳复患者，适宜使用枳实栀子豉汤通过发汗的方法治疗。对于食复患者，适宜使用枳实栀子豉汤加大黄通过泻下的方法治疗。凡是复发之证，若脉象浮且伴有表证，适宜用枳实栀子豉汤通过发汗来解除；若脉象沉且伴有里证，适宜用枳实栀子豉汤加大黄通过泻下来解除。如果没有表证和里证的表现，适宜用小柴胡汤进行和解治疗。如果出现口燥、心烦口渴、喜欢呕吐的症状，适宜用竹叶石膏汤主治。如果是因内伤导致气虚而引发的劳复，适宜用补中益气汤主治。如果因房事导致阴精亏损者，适宜用六味干地黄汤主治；若气虚明显者，应在方中加倍加入人参汤主治。
男女在病后初愈时，因性交而导致疾病复发，称为“房劳复”。男女病后初愈发生性行为，患病男性传给未患病的女性，或患病女性传给未患病的男性，称为“阴阳易”，即交换的意思。患有此病的人，男性取女性的内裤裆部，女性取男性的内裤裆部，烧成灰末，用开水或酒送服，每日三次即可痊愈。其症状表现为：小腹部拘急疼痛，牵引至阴部，身体沉重、气短，头晕目眩，四肢拘挛抽搐，热气上冲胸部，这些都是该病的证候表现。
易于痊愈的病症，观察神志则神志清明；观察面色则色泽润泽；观察声音则声音洪亮悠长；观察体态则身体轻盈；观察皮肤则肌肤滋润；观察脉象则脉气和缓，这是一派不死而呈生机之象。如果有上述这些生机之证，突然之间出现牙关紧闭不能说话、烦躁加重、六脉隐伏摸不到，应当仔细诊察，这并非病情转为凶险，而是正气与邪气相互交争，即将出现战汗的现象，是即将痊愈的征兆。凡是伤寒病患者出现口渴，多属于阳证，容易痊愈。如果突然饮水超过平常倍数，水分迅速消散没有停留，这是酝酿出汗从而病解的迹象。伤寒病患者大多食欲不振，如果突然能够进食，且脉象浮，说明胃气调和，邪气由里出表从而病解。如果不能立即解除，是因为阴阳之气尚未协调。若在子时发病，到午时必定解除，这是阳气济助阴气而生发从而解除；若在午时发病，到子时必定解除，这是阴气从化于阳气而解除。
After the initial recovery from illness, the Zang-Fu organs (internal organs) and Qi-Blood (vital energy and blood) are all deficient, Ying-Wei (Nutritive and Defensive Qi) have not yet circulated smoothly, and the intestines and stomach have not harmonized. At this stage, one should rest quietly and consume only plain white rice porridge. If overeating occurs, the weak stomach will struggle to digest it, leading to a recurrence of irritability and heat, termed "Food Relapse" (Shi Fu). If excessive physical exertion leads to a recurrence of irritability and heat, it is termed "Labor Relapse" (Lao Fu). For Labor Relapse, Zhishi Zhizi Chi Tang (Immature Bitter Orange, Gardenia, and Fermented Soybean Decoction) should be used to induce sweating. For Food Relapse, Zhishi Zhizi Chi Tang combined with Dahuang (Rhubarb Root) should be used to promote purgation. In cases of relapse, if the pulse is floating and exterior symptoms are present, Zhishi Zhizi Chi Tang should be used to resolve via sweating. If the pulse is deep and interior symptoms are present, Zhishi Zhizi Chi Tang combined with Dahuang should be used to resolve via purgation. If there are neither exterior nor interior symptoms, Xiaochaihu Tang (Minor Bupleurum Decoction) should be used for harmonization. If symptoms include dry mouth, irritability, thirst, and a desire to vomit, Zhuye Shigao Tang (Bamboo Leaf and Gypsum Decoction) is indicated. If the labor relapse is caused by internal injury and Qi deficiency, Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) is indicated. If Yin deficiency results from sexual activity, Liuwei Dihuang Wan (Six-Ingredient Rehmannia Pill) is indicated; if Qi is notably deficient, Renshen (Ginseng Root) should be doubled in the prescription.
When men or women engage in sexual intercourse shortly after recovering from illness, causing the disease to recur, it is called "Sexual Labor Relapse" (Fang Lao Fu). When a man and a woman, both recently recovered, engage in intercourse, and the disease transmits from the sick male to the healthy female, or from the sick female to the healthy male, it is called "Yin-Yang Exchange" (Yin Yang Yi), implying an exchange of pathogenic factors. For those afflicted with this condition, the crotch portion of the female's underwear is taken for males, and the crotch portion of the male's underwear is taken for females. These are burned to ash and administered orally three times daily with warm water or wine to effect a cure. Symptoms include acute pain in the lower abdomen radiating to the genitalia, heaviness of the body, shortness of breath, dizziness and vertigo, spasticity of the four limbs, and a sensation of hot qi rushing to the chest.
In diseases prone to recovery, observing the Spirit (Shen) reveals clarity; observing the complexion reveals luster; observing the voice reveals longevity and strength; observing the body reveals lightness; observing the skin reveals moisture; observing the pulse reveals harmony. These constitute a set of vital signs indicating life rather than death. If such vital signs are present, but suddenly the patient experiences lockjaw, inability to speak, worsening irritability, and a hidden or imperceptible pulse at all six positions, careful observation is required. This is not a transformation into a critical condition, but rather a sign of the struggle between Healthy Qi (Zheng Qi) and Pathogenic Factors (Xie Qi), heralding a "Chill-Sweat" (Zhan Han) reaction, which is an omen of impending recovery. In patients with Shanghan (Cold Damage) who experience thirst, it is mostly a Yang syndrome that is easy to cure. If they suddenly drink more than double their usual amount, and the fluid dissipates quickly without stagnation, it indicates that sweat is brewing and the disease will resolve through perspiration. Patients with Shanghan often lack appetite; if they suddenly regain the ability to eat and the pulse becomes floating, it indicates that Stomach Qi has harmonized, the pathogen has returned to the exterior, and resolution is occurring. If resolution does not occur immediately, it is because Yin and Yang have not yet found their proper timing. If onset occurs at Zi hour (11 PM - 1 AM), resolution will definitely occur at Wu hour (11 AM - 1 PM), as Yang nourishes Yin to bring about resolution. If onset occurs at Wu hour, resolution will definitely occur at Zi hour, as Yin transforms following Yang to bring about resolution.