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Chanting Throat Wind (Chan Hou Feng) refers to a condition where heat pathogens accumulate in the throat, causing swelling that extends to the exterior (the outer surface of the throat also swells), accompanied by numbness and itching. With severe obstruction of wind-phlegm, the voice becomes hoarse like a sawing sound; this constitutes its clinical presentation. This syndrome has both deficiency (Xu) and excess (Shi) types.

In the deficiency type, during the first two days of onset, there must be rebellious Qi in the chest and diaphragm, shortness of exhalation, sudden swelling and pain of the throat, surging of saliva and phlegm upwards, and even neck stiffness resembling convulsions pulled by a snake. Inability to take food or water, cold extremities, white fingernails, and intense heat in the palms are present, making it extremely dangerous. This is caused by Yin deficiency with hyperactive fire. The patient typically has latent phlegm-heat internally. It may arise from excessive alcohol consumption stirring up Stomach Fire, from uncontrolled anger stirring up Liver Fire, or from sexual indiscretion stirring up Kidney Fire. When fire stirs, phlegm is generated; phlegm-heat blazes fiercely, obstructing the throat. Since fire moves rapidly, external and internal swelling and pain occur quickly, making swallowing difficult. The treatment principle is: in acute cases, treat the branch (Biao, referring to phlegm); in chronic cases, treat the root (Ben, referring to fire). One may use pills or powders to induce vomiting to expel phlegm and dissipate heat, or use a goose feather dipped in tung oil to stimulate the gag reflex for vomiting, or puncture the swollen area with a silver needle to release bad blood, apply Bingpeng San (Ice and Borax Powder), or prick the Shaoshang (LU-11) acupoint on the thumb to bleed. Subsequently, decoctions should be used to descend fire and tonify deficiency. Although many treatments exist, only one or two out of ten recover. Physicians encountering this syndrome can only do their utmost and leave the outcome to Heaven.

The excess type arises when Wind-Warmth pathogens invade the Lung and Stomach. Wind and fire fan each other, rebelling upwards into the throat, causing saliva and phlegm to surge. One should first eliminate the phlegm, then administer Maxing Gan Shi Tang (Ephedra, Apricot Seed, Licorice, and Gypsum Decoction). If after three days the disease persists or worsens with tightening of the throat, red face, and coarse breathing, it becomes an untreatable condition.

Infants suffering from Horse Spleen Wind (Ma Pi Feng) have Wind-Warmth invading the lung orifices, or accumulated heat in the chest and diaphragm, with Heart Fire suppressing the Lung. Severe phlegm-heat causes lung distension, wheezing, and fullness, high chest, rapid breathing, retracted intercostal spaces, flaring nostrils, chaotic coughing, irritability, thirst, tidal phlegm, hoarseness, and saw-like wheezing in the throat. Without urgent treatment, death occurs within a day or night. Chen Feixia stated: "Heart corresponds to Wu Fire and is associated with the Horse, indicating Wind-Heat in the Heart and Spleen." Urgently use Niuhuang Jueming San (Calculus Bovis Life-Taking Powder) to purge. The formula consists of Heiqian Niu (Semen Sterculiae Lychnophorae, half raw, half stir-fried), Baiqian Niu (Semen Phytolaccae Acinosa, half raw, half stir-fried), Jinwen Dahuang (Radix et Rhizoma Rhei, sun-dried), and Binglang (Areca Seed, sliced and sun-dried), each ground into powder, mixed evenly. Take 0.5 qian per dose, mixed with honey water, adjusting according to the child's age. If phlegm is abundant, add Qingfen (Calomel) in the amount of "one character," stopping when bowel movements become loose and phlegm-qi subsides.