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There are two types of head heaviness caused by *Shanghan* (Cold Damage). One type is characterized by aversion to cold, stiffness in the neck, headache, and an inability to lift the head due to the weight; it should be treated with methods that disperse cold pathogens. The other type involves general joint laxity accompanied by dizziness and an inability to lift the head due to deficiency; it should be treated with methods that tonify the True Yuan (original Qi).

Sore throat is caused by heat toxins rushing upward; it should be primarily treated with Ganjie Tang (Licorice and Platycodon Decoction) or Kujiu Tang (Bitter Wine Decoction). However, there are two patterns: Yin and Yang. If the pulse is floating and rapid, the face is red with mottled spots resembling brocade patterns, and the patient has a sore throat while vomiting pus and blood, this is Yang Du (Yang Toxin). If the pulse is sunken and slow, the hands and feet are cold, or there is vomiting and diarrhea accompanied by a sore throat, this is Shaoyin disease (Disease of the Lesser Yang Meridian, specifically referring to the Kidney channel pattern in this context).

Itching in the throat may result from erroneous sweating in cases of Yang Jue (Yang Reversal), or it may be caused by cold latent in the Kidneys leading to the flaming up of Yin Fire.

Body itching may result from the Taiyang stage where sweat cannot be produced due to pathogen constraint, or from chronic deficiency in the Yangming stage resulting in no sweat, or from the Jueyin stage where symptoms resemble malaria but slight sweating cannot be achieved.

Deafness indicates that the pathogen has transmitted to the Shaoyang meridian. If sweating has not been used previously, harmonization is appropriate; if heavy sweating has already been employed, tonification is appropriate.

Chest fullness refers to a sensation of qi obstruction and stuffiness between the diaphragm, distinct from fullness below the heart (epigastric region). Hypochondriac fullness refers to a sensation of qi obstruction and filling beneath the ribs, distinct from abdominal fullness. Generally, when pathogens transmit from the exterior to the interior, they first affect the chest-diaphragm and hypochondrium before reaching the abdomen and stomach. Therefore, chest fullness often presents with exterior symptoms and should be treated with dispersing methods. Hypochondriac fullness is a half-exterior, half-interior syndrome and should be treated with harmonizing methods. Abdominal fullness, however, is an interior syndrome and requires purgative or draining methods. In general, chest and hypochondriac fullness occur because the pathogen has just entered the interior without forming a solid accumulation; rather, qi stagnation and failure to circulate cause the fullness, so dispersing or harmonizing methods suffice. If the pathogen lingers in the chest and condenses into a solid excess, emesis is required.

Fullness below the heart refers to a raised, full, and hard sensation directly at the epigastrium. If this occurs without prior purgation, treatment differs based on whether vomiting or purging is indicated. If it occurs after purgation, it distinguishes between Jie Xiong (Chest Binding) and Pi Qi (Pi Syndrome). One view states that if excess pathogens remain and bind, causing hardness and pain, it is called Jie Xiong. If deficient pathogens linger, causing pi-fullness without pain, it is called Xu Pi (Deficient Pi). The Classics state: "When a disease originates in Yang and is erroneously purged, heat enters the interior, resulting in Jie Xiong." "When a disease originates in Yin and is erroneously purged, Pi Qi results." "Disease originating in Yang" refers to fever and aversion to cold. It should have been treated with sweating; if purged instead, exterior pathogens enter via the deficiency and bind at the epigastrium, forming Jie Xiong. "Disease originating in Yin" refers to absence of fever with aversion to cold. It should have been treated by releasing the exterior; if purged instead, pathogens sink into the Middle Jiao, forming Pi Qi. Thus, Jie Xiong and Pi Qi arise from premature purgation and must be treated according to five categories: Major, Minor, Cold, Heat, and Water. If there is spontaneous pain upon palpation, or hardness around the umbilicus such that the area is intolerable to touch, it is Major Jie Xiong, treated with Da Xian Xiong Tang (Major Draining the Chest Decoction). If fullness below the heart causes pain only upon pressure, it is Minor Jie Xiong, treated with Xiao Xian Xiong Tang (Minor Draining the Chest Decoction). If there is mental restlessness and stifling sensation without fever, it is Cold Jie Xiong, treated with Sanwu Baisan (Three-Ingredient White Powder) or Zhishi Lizhong Tang (Immature Bitter Orange and Spleen-Tonifying Decoction). If there is restlessness, irritability, dry tongue, and thirst, it is Heat Jie Xiong, treated with Da Xian Xiong Tang. If there is palpitations below the heart, slight sweating on the head, no significant body heat, and a gurgling sound upon rubbing, it is Water Jie Xiong, treated with Xiao Banxia Jia Fuling Tang (Minor Pinellia Decoction plus Poria). Generally, both Jie Xiong and Pi require purgation; however, if the exterior is unresolved, attack is contraindicated. Zhang Zhongjing stated: "One must first resolve the exterior; only after the exterior is resolved can one attack." For resolving the exterior, Guizhi Tang (Cinnamon Twig Decoction) is suitable; for attacking Pi, Dahuang Huanglian Xiexin Tang (Rhubarb, Coptis, and Scutellaria Heart-Draining Decoction) is suitable. Another opinion holds that if Xiexin decoctions fail to treat Pi, then Xianxiong decoctions may be used for purgation. *Jinkui Yaolue* notes: "Jie Xiong arises from purgation; if not preceded by purgation, it is not Jie Xiong. It is merely exterior pathogens transmitting to the chest without entering the Fu organs. Although there is fullness and stuffiness, it remains at the exterior level, and Xiao Chaihu Tang (Minor Bupleurum Decoction) added with Zhike (Aurantii Fructus Immaturus) and Jiegeng (Platycodon Root) suffices." Physicians of later generations often see epigastric fullness and immediately diagnose Jie Xiong, using purgative drugs, which can inadvertently create true Jie Xiong. If Jie Xiong presents with irritability, it is incurable. Zang Jie (Zang Binding) presents similarly to Jie Xiong, but digestion remains normal, and there is frequent diarrhea. Zhang Zhongjing provided no treatment method for this, stating that Zang Jie leads to death. For all Jie Xiong syndromes, initially use Zhike and Jiegeng to broaden the qi, and externally apply ginger residue for rubbing and warming; this method is very effective.