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Zeng said: The Liver belongs to Wood in the Five Elements, and its movement corresponds to Wind. When diseased, it primarily manifests as fright and alarm. Various heat pathogens draw out Liver Wind; when Wind is excessive, it generates Phlegm, and Phlegm obstruction triggers convulsions. During an infantile wind-stroke (Jing Feng) episode, when the limbs twitch and jerk, one should allow them to settle naturally before administering treatment, to avoid inducing other complications. If parents, fearing the severity of the illness, forcibly restrain the child's limbs, they fail to realize that sinews are the external correspondence of the Liver. Restraint during onset prevents sinews from relaxing and extending, causing meridians to be blocked by Wind pathogenic factors, ultimately resulting in wind-stroke paralysis or Crissum Knee (He Xi), rendering the patient disabled. Whenever an infant exhibits irregular palpitations, generalized swelling and pain, or inability to move limbs voluntarily, this indicates a wind-stroke paralysis syndrome. If treatment is delayed until phlegm-dampness flows into the joints of arms, wrists, knees, and shins, forming stubborn nodules, or if the knees enlarge while calf muscles atrophy exposing the tibia resembling a crane's knee, or if carbuncles and sores appear, this is termed the Crissum Knee syndrome. For these conditions, diaphoresis (sweating method) should be employed first to open the interstices (Cou Li), thereby clearing Wind-Heat and eliminating Dampness. Use Baijie San combined with Wuling San ingredients, doubling the dosage of Ephedrae Herba (Mahuang), decocted with Zingiberis Rhizoma Recens (Shengjiang) and Allii Fistulosi (Congbai), aiming for a slight sweat. Subsequently, use Fangji Tang or Duohuo Tang added with Sangjisheng, or Heihu Dan prepared as small pills taken intermittently, to prevent Wind generation and Phlegm formation, facilitating recovery. For severe pain from carbuncles or sores, use half raw and half stir-fried Semen Koelreuteriae (Qian Niu Zi) ground into powder, administered with Wuling San mixed in non-grain alcohol (Wu Hui Jiu) to eliminate cold-dampness flowing through meridians, causing the swelling and toxicity to subside spontaneously. If pathogens enter the Fu organs causing blockage, indicating internal accumulation of Wind-Heat, characterized by redness and tightness on the right cheek, and floating, slippery, and excess pulse at all three positions (Cun, Guan, Chi) on the right hand, Wuhe Tang or Danggui San is appropriate. Modifications must be adapted to clinical circumstances; adhering rigidly to a single prescription is not the way of a good physician. For previous symptoms, Paifeng Tang should also be taken intermittently.

Xue Ji stated: Crissum Knee (He Xi Feng) is named so because the legs gradually become thin while the knees become increasingly swollen, resembling a crane's knee. This arises from insufficiency of the Kidney Meridian, allowing external pathogens to invade. Initially, there is pain inside the knee without external color change, and difficulty in extension and flexion. If within one or two months the swelling becomes red and suppurates, it is treatable; if it remains hard, white, and does not suppurate, it is difficult to treat. At the onset, Da Fangfeng Tang should be used as the principal formula, assisted by Yiqi Yangying Tang, which constitutes the correct treatment.

Lou Quanshan stated: Head shaking caused by Liver Wind occurs due to abundant Liver Blood combined with external Wind-Heat invasion, leading to mutual agitation and unstable trembling.

Weng Kentang recalled hearing from his friend Sun Pengshan in his youth about a child suffering from convulsions. After medical treatment, all symptoms subsided except for persistent head shaking. An old physician then added Paris Polyphylla Rhizome (Chong Lou/Ziheche Cao) to the usual medication, resulting in immediate recovery. According to records, this herb is known as Zao Xiu in Shennong Bencao Jing, Jin Xian Chong Lou in Tang Bencao, and Bai Gansui in Qian Yi's formulas. It treats fright, epilepsy, head shaking, and tongue protrusion, as recorded in the main text of the Classic. The ancients stated that following the original texts for treatment yields many effective results, which is indeed true.