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Whenever a child is about to manifest smallpox or measles, fever must first appear. When the heat is severe, it injures the Yin aspect of the body. Alternatively, Heart Fire may transfer heat to the Liver, causing Wind and Fire to contend with each other. This results in symptoms such as convulsions of the hands and feet, and deviation of the mouth and eyes, which is also common. The *Classic of Difficult Issues* (or *Neijing*) states: "All wind diseases characterized by tremors and dizziness belong to the Liver." It also states: "All pain, itching, sores, and ulcers belong to the Heart." Since the Heart governs Heat, excessive Heat overcomes the Lung Metal, preventing the Lung from restraining Liver Wood. Extreme Heat generates Wind; when Wind and Fire contend, the Spirit (*Shen*) becomes unsettled, leading to fright and convulsions. If one recklessly treats this with anti-convulsant medicines, it will cause Cold in the Heart and contraction of the muscles, forcing the toxin to sink inward. The harm caused would be incalculable. The principle of treatment should be to observe the etiology and adjust accordingly. For example: if there is fever without sweating, indicating severe exterior pathogenic factors accompanied by convulsions, treat with *Chai Gui Yin* (Bupleurum and Angelica Decoction) or *Xing Xing San* (Awakening Powder). If there is irritability, thirst for cold drinks, and severe interior heat accompanied by convulsions, treat with *Dao Chi San* (Guide Out Redness Powder) or *Chen Sha Liu Yi San* (Cinnabar Six-to-One Powder). If Liver and Gallbladder heat are excessive, with constipation, irritability, and convulsions, treat with *Xie Qing Wan* (Drain Green Pill). If heat is extreme, manifested by bleeding and convulsions, treat with *Xi Jiao Di Huang Tang* (Rhinoceros Horn and Rehmannia Decoction). Once the Wind-Heat recedes, the rash will emerge, and the convulsions will cease naturally. However, these are all methods for treating excess syndromes. Additionally, there are cases where convulsions arise due to innate constitutional deficiency and insufficiency of the Heart and Spleen. These should be differentiated by pale bluish-white complexion and timid spirit. Treat with *Qi Fu Yin* (Seven Blessings Decoction), or *Yang Xin Tang* (Nourish Heart Decoction), or *Liu Qi Jian* (Six Qi Decoction) added with *Zao Ren* (Semen Ziziphi Spinosae / Spinous Date Seed).

Master Zhang Zhongjing stated: "When the body is hot but the feet are cold, the head and neck are stiff and rigid, there is aversion to cold while the head feels hot, the face is red, the eye vessels are red, only the head shakes, sudden lockjaw occurs, and the back arches backward like a bow, this is Jing Disease (Spasm Disease)." Fever without sweating and aversion to cold is called Gang Jing (Stiff Spasm). Fever with sweating and no aversion to cold is called Rou Jing (Soft Spasm). It is also said: "In Taiyang Disease, excessive sweating leads to Jing Disease." Children have tender skin and thin flesh, loose interstices (*Cou Li*), and unfulfilled blood volume, making them prone to external infections. Often, when the pathogen initially transmits to the Taiyang Meridian, they experience body stiffness, profuse sweating, pulling sensations in the sinews and vessels, and mental confusion. This is precisely the transformation into Jing Syndrome. This is primarily due to severe heat injuring Yin, excessive sweating damaging fluids, internal deficiency of Qi and Blood, and sinews losing nourishment. Regarding treatment principles: If Jing occurs at the onset of illness, with unresolved exterior pathogens, Yin deficiency, no sweating, and fever, treat with *Ren Shen Qiang Huo San* (Ginseng and Notopterygium Powder), or *San Chai Hu Yin* (Three Bupleurum Decoction), or *Si Chai Hu Yin* (Four Bupleurum Decoction). If caused by excessive sweating or overuse of dispersing methods leading to severe Yang Qi deficiency, treat with *Shen Fu Tang* (Ginseng and Aconite Decoction), *Shen Gui Tang* (Ginseng and Angelica Decoction), or *Ren Shen Jian Zhong Tang* (Ginseng and Middle-Building Decoction). If sweating accompanies fire, with a surging and slippery pulse, irritability, or severe phlegm-heat, adopt Danxi's method using *Ren Shen Zhu Li* (Ginseng and Bamboo Sap). If the body has slight heat and the pulse is not tight or rapid, indicating the exterior pathogen has been resolved through sweating, do not use dispersing agents again; instead, focus solely on supporting Righteous Qi (*Zheng Qi*). Treat with *Wu Fu Yin* (Five Blessings Decoction). If there is severe deficiency with a deep, fine pulse indicating Yin excess, treat with *Da Ying Jian* (Great Camp Decoction), *Da Bu Yuan Jian* (Great Tonify Origin Decoction), or *Shi Quan Da Bu Tang* (Ten Complete Great Tonifying Decoction). Secondly, Jing can also be caused by various errors: misusing purgatives injuring Yin, excessive diarrhea, mistaking dampness for exterior syndrome and sweating, mistreating skin sores with sweating, excessive blood loss, postpartum conditions in women, summerheat injury, or wind-stroke. All these can lead to Jing. Why do worldly physicians fail to understand this? They mistakenly name the initial Taiyang transformation in children as Ji Jing Feng (Urgent Wind); they name cases of excessive sweating/purging with weak spirit, open mouth, and wide eyes as Man Jing Feng (Slow Wind); they name postpartum blood-deficiency spasms as Chan Hou Jing Feng (Postpartum Wind); they name trauma-induced blood-loss spasms as Po Shang Feng (Broken Injury Wind); they name summerheat damaging Zheng Qi with sweating and syncope as Shu Jing Feng (Summer Wind); and they categorize deficiency-type non-wind conditions under these names. Not realizing these are all extreme deficiency syndromes, they indiscriminately administer opening and sedating/astringent drugs. This further depletes True Qi, allows pathogens to sink inward, and leads to successive deaths. How unfortunate for the people! Practitioners of pediatrics must not see head shaking, lockjaw, opisthotonos, or convulsions and recklessly treat them as Jing Feng, thereby harming patients beyond recovery.