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Qian Yi said: The symptoms of Shanghan (Cold Damage) are, in boys, heavy body and yellowish complexion; in girls, red face, panting and urgency, aversion to cold, hot breath from the mouth, yawning, dizziness and stuffiness, and stiffness of the neck. For Chu Zhen (exanthematous diseases such as measles), the cheeks are red, there is irritability, frequent sneezing, palpitations, drowsiness and fatigue, and cold limbs. Shanghan should be treated with dispersing methods; during the eruption phase of Chu Zhen, mild and neutral methods should be used, and if there is high fever, detoxification is required. See previous discussions for details.

Zhang Yuansu (Jiegu) said: In cases of Wind Injury (Shang Feng), the skin is dry and tense with nasal congestion; whereas in Chu Zhen, there are palpitations, yawning, and sneezing during sleep, which makes it easy to distinguish.

Qian Yi said: Ji Jing (Acute Convulsion) is triggered by loud noises or severe fright, leading to convulsions. After the episode, the child returns to normal. This is due to Yin deficiency (with Yang hyperactivity). It should be primarily treated with Lijing Wan (Purgative Convulsion Pill). This condition originates from Heart Fire generating internally, manifesting as body heat, ruddy complexion, thirst, hot breath, yellow and reddish urine and stool, and convulsions when severe. Generally, extreme heat generates Wind, and Wind belongs to the Liver; this represents excess Yang and deficient Yin. Therefore, Lijing Wan is used to eliminate phlegm-heat. One must not use Euphorbiae Pekinensis Radix (Badou) or warm purgatives for strong evacuation, lest the convulsions persist and the deficiency-heat fail to dissipate. When pediatric phlegm-heat lodges in the Heart and Stomach, hearing unusual sounds can trigger fright and convulsions. If the heat is extreme, convulsions may occur spontaneously even without sound or fright.

Man Jing (Chronic Convulsion) occurs after serious illness or following vomiting and diarrhea that damage the Spleen and Stomach. Symptoms include coldness of the entire body, cold breath from the mouth and nose, intermittent twitching of hands and feet, lethargy, and eyes half-open while sleeping (Lu Jing). This indicates Yang deficiency (deficiency of Yang Qi). It should be primarily treated with Gualou Tang (Trichosanthes Decoction).

One must carefully differentiate between Ji Jing and Man Jing, as they represent different Yin and Yang patterns, and treatment must follow this distinction. Ji Jing requires cooling and purging methods, while Man Jing requires warming and tonifying methods. Failure to distinguish them leads to significant errors.

Yan Xiaozhong said: Ancient texts did not use the terms "Acute/Chronic Convulsion" but referred to them as "Yin/Yang Epilepsy." Yang moves quickly, so Yang diseases are called Acute Convulsion; Yin is still and slow, so Yin diseases are called Chronic Convulsion. These reflect differences in Yin/Yang, Deficiency/Excess, and Cold/Heat. Treatment must not be mistaken. Acute Convulsion involves heat, which generates Wind, often triggered by fright. Symptoms include rapid eye movements, salivary flooding, convulsions and spasms, and heat in the body and breath. Once the attack subsides or upon waking, the child becomes lucid and normal, characterizing Acute Convulsion. During the convulsion, when heat slightly decreases, administer heart-calming and heat-reducing medicines. Once stabilized, use medicines to drain phlegm-heat; when the Spirit (Shen) is calm, recovery ensues. Chronic Convulsion follows serious illness, vomiting, diarrhea, or excessive use of emetics/purgatives causing Spleen-Stomach deficiency, allowing Wind pathogens to invade. Symptoms include mild twitching rather than severe convulsions, light sleep rather than deep slumber, cold limbs and breath, eyes half-open during sleep, or crying like a crow due to stomach pain. This is a critical condition caused by Spleen-Stomach deficiency.

Zhang Yuansu (Jiegu) said: Acute Convulsion is a Yang pattern involving the Fu organs. Pediatric guest phlegm-heat lodges in the Chest and Diaphragm, indicating hyperactivity of Shaoyang Ministerial Fire. As the Classic states, "Heat generates Wind," triggered by loud noise. This is akin to the East (Zhen Trigram) receiving Fire energy to cause convulsions; Fire does not move on its own but moves with Wind. Treat with Lijing Wan, Daochi San, Xieqing Wan, and Dihuang Wan. After convulsions stop, administer Anshen Wan.

Chronic Convulsion is a Yin pattern involving the Zang organs. Prolonged vomiting and diarrhea in children damage the Spleen and Stomach. If not treated early, it becomes Chronic Convulsion, named "Yu" (twitching), characterized by mild convulsions. Due to Spleen-Stomach deficiency, stools are unformed. First, remove Wind from the Spleen using Xuanfeng San for guidance/drainage, followed by Shijunzi Wan and Yihuang San to stop diarrhea. If treatment is delayed, both Spleen and Lung become deficient, allowing Liver Wood to overact upon them, resulting in Chronic Convulsion. Treat with warming and tonifying methods, such as Qianghuo Gao.

The *Quan Ying Fang* states: Convulsions due to Wind present with blue-green eyes, red face, and convulsions; those due to Fright involve the Heart, sudden crying, and convulsions; those due to Food Stagnation present with belching and vomiting, with convulsions upon qi rebellion. These are all Yang Epilepsy. Deficiency of Lung and Stomach meridians generates sticky phlegm, which accumulates in the throat, producing a sawing sound and occasional twitching. Alternatively, caused by vomiting/diarrhea, Spleen deficiency leads to Lung deficiency, causing saliva and phlegm to overflow, presenting similarly. These are all Yin Epilepsy.

Body heat, floating pulse, absent-mindedness, vomiting or diarrhea, anorexia, and convulsions constitute a Half-Yin Half-Yang combined pattern. Cool body, deep pulse, lethargy, no vomiting/diarrhea, ability to feed, and convulsions also constitute a Half-Yin Half-Yang combined pattern, similar to Shanghan having both Exterior and Interior aspects. Acute Convulsion may fail to respond to cooling/purging and transform into Chronic Convulsion due to excessive emetic/purgative use; Chronic Convulsion may transform into Acute Convulsion if warming/tonifying fails. Such mutual transformations are common.

Note: The above discussions cover the essentials of syndrome differentiation and treatment. However, Qian's recommendation of Gualou Tang for Chronic Convulsion is likely a transcription error. Generally, Convulsion is governed by Wind-Wood. Jia Wood belongs to Yang and Fu diseases, making Acute Convulsion easier to treat; Yi Wood belongs to Yin and Zang diseases, making Chronic Convulsion difficult to treat. For instance, fright-induced diarrhea in adults occurs because Jia Wood controls Wu Earth. Moreover, children's Five Zang Qi are not yet solid, and their Shen Qi is incomplete, making them prone to self-generated disease. Unless the condition arises post-serious illness or post-vomiting/diarrhea with Spleen-Stomach deficiency, it may involve夹杂着 Fire, Heat, Phlegm, or Food. When Wind pathogens penetrate inward into Fu or Zang organs, it resembles external Wind-Stroke. Therefore, practitioners should follow Qian's principles of tonifying deficiency and purging excess to avoid contraindications and errors of excess or insufficiency in medication.