Huangdi asked: What causes the trembling of the human body? Qibo replied: When the Stomach Qi is not substantial, the meridians become deficient. When the meridians are deficient, the sinews and vessels become lax and sagging. Laxity of the sinews and vessels leads to an excess of Yin during movement; after exertion, recovery fails to occur, thus resulting in trembling. Treatment should be based on the location of the pathology, applying tonification methods between the muscle layers (Fenroujian). The *Medical Outline* (*Yixue Gangmu*) states that tremor and convulsion are similar; convulsion involves traction of the limbs with extension or flexion, whereas tremor is merely shaking without extension or flexion. If there is Stomach deficiency with phlegm, use Ginseng Radix et Rhizoma (Renshen) and Atractylodis Macrocephalae Rhizoma (Baizhu) to tonify Qi, and Poria (Fuling) and Pinelliae Tuber (Banxia) to resolve phlegm; if there is excess heat with accumulation, apply the three methods (sweating, vomiting, purgation) of Zhang Hezi.

Xue Ji stated: Tremor is synonymous with falling and dizziness (Diaoxuan). The *I Ching* says: "Nothing moves the myriad things faster than Wind." "Gudong" implies movement. Generally, falling and dizziness result from the swaying motion of Liver-Wood. All wind diseases causing falling and dizziness belong to the Liver. Therapeutic methods: If there is Liver-Wood excess heat, use Xieqing Wan (from *Youke Gan*, discussing Liver disorders). If there is Liver-Wood deficiency heat, use Liuwei Wan (from *Zabing Xulao*, discussing deficiency consumptive diseases). If Lung-Metal overacts on Liver-Wood, use Xiebai San (from *Zabing Fare*, discussing fever). If Liver-Wood is weak, use Xiaoyao San (for regulating menstruation), adding Ginseng Radix et Rhizoma (Renshen), Atractylodis Macrocephalae Rhizoma (Baizhu), and Uncariae Ramulus cum Uncis (Gouteng). If Spleen Blood is deficient, use Liujunzi Tang (from *Zabing Xulao*), adding Ligusticum Chuanxiong Rhizoma (Chuanxiong) and Angelica Sinensis Radix (Danggui). If Stomach Qi is weak, use Buzhong Yiqi Tang (from *Nanbing Shang Laojuan*, discussing difficult diseases and fatigue-induced injury), adding Uncariae Ramulus cum Uncis (Gouteng). If tremor occurs postpartum, it is due to depletion of Qi and Blood, with hyperactive deficiency fire generating wind; it must not be treated merely as a wind syndrome, but requires strong tonification to avoid error. One woman had a irritable disposition, fever, irregular menstruation (either delayed or early), limb fatigue, poor appetite, and tremor. I diagnosed insufficient Spleen Qi, scanty Liver Blood, and hyperactive fire. In the morning, she took Tiaozhong Yiqi Tang added with Poria (Fuling) and Fritillariae Thunbergii Bulbus (Beimu), taken with Liuwei Wan; in the afternoon, she took Xiaoyao San taken with Liuwei Wan. She recovered after more than two months. Another woman suffered from body tremor and delirious speech, unresponsive to other medicines. I attributed it to depression and anger. Upon inquiry, it was found that she had harbored resentment towards her husband for a long time. She was given Xiao Chaihu Tang (from *Shanghan Shaoyang*, discussing Shaoyang disease), which provided slight relief, followed by Jiawei Guipi Tang (Guipi Tang added with Bupleuri Radix (Chaihu) and Gardeniae Fructus (Zhizi)), leading to recovery.

Jiaojiao San: Treats convulsions or tremors, or postpartum unconsciousness with salivation.
Ingredients: Angelicae Sinensis Radix (Danggui) and Schizonepetae Spica (Jingjie Sui) in equal parts.
Preparation and Administration: Powdered finely. Take 3 qian per dose, decoct with one cup of water and a little wine until reduced to 0.7 cups, and administer orally. Life can be restored upon swallowing.

Zengsun Chaihu Tang: Treats postpartum or sudden cessation of menstruation leading to limb traction and convulsions, teeth grinding, and coma-like states.
Ingredients: Bupleuri Radix (Chaihu, 8 qian), Astragali Membranacei Radix (Huangqi, stir-fried, 5 qian), Scutellariae Radix (Huangqin, stir-fried) and Gypsum Fibrosum (Shigao, 4 qian each), Pinelliae Tuber (Banxia, 3 qian), Anemarrhenae Rhizoma (Zhimu) and Glycyrrhizae Radix et Rhizoma (Gancao, roasted, 2 qian each).
Preparation and Administration: Coarsely powdered. Take 0.5 liang per dose, decoct with five slices of Zingiberis Rhizoma Recens (Shengjiang) and four dates (Zao) in water, and take warm.

Benshi Qingyan Wan: Treats Liver and Kidney deficiency with weakness in waist and knees, tremors accompanied by dragging limbs.
Ingredients: Fragrant powder (Xiangmo, 3 liang), Cuscutae Semen (Tusizi, 4 liang), Dioscoreae Rhizoma (Shanyao, dried, 2 liang, powdered), and Green Salt (Qingyan, 1 liang, ground).
Preparation and Administration: First wash Tusizi, soak in clear wine for seven days, sun-dry, then roast near fire in winter until dry. Grind into fine powder and mix evenly. Make pills with wine paste, size of wisteria seeds. Take 50-70 pills per dose with warm wine or salt water. Regular use strengthens sinews and improves appetite. A woman who previously suffered from dragging feet recovered normal walking ability after taking this medicine.

Benshi Xingfu San: Treats stroke where the patient can speak but has dragging limbs, with a deficient, floating, and rapid pulse.
Ingredients: Arisaematis Rhizoma (Tian Nanxing, processed like Banxia), Pinelliae Tuber (Banxia, thinly sliced, soaked in ginger juice), Aconiti Lateralis Radix Preparata (Hei Fuzi, processed), Aconiti Kusnezoffii Radix (Baifuzi, processed), Aconiti Karakolicum Radix (Chuan Wutou, processed), Bombyx Batryticatus (Bai Jiangcan, stir-fried), Myrrha (Moyao), Ginseng Radix et Rhizoma (Renshen), and Poria (Baifuling) in equal parts.
Preparation and Administration: Coarsely powdered. Take 2 qian per dose, decoct with one cup of water and one cup of wine until reduced to 0.8 cups. Strain and take hot in two or three doses. Recovery occurs with sweating. In Tonglu, a patient with this condition took three doses, sweated, and regained limb movement.

Sanyin Duhuo San: Treats Qi deficiency with wind invasion, or fright and terror multiplying, affecting Liver and Gallbladder, causing Upper Qi to lose its proper position, leading to head nodding/shaking, hand and foot trembling, and gradually blurred vision.
Ingredients: Angelicae Pubescentis Radix (Duhuo), Lycii Cortex (Digupi), Asari Radix et Rhizoma (Xixin), Ligusticum Chuanxiong Rhizoma (Chuanxiong), Chrysanthemi Flos (Juhua, sweet variety), Saposhnikoviae Radix (Fangfeng, de-bristled), and Glycyrrhizae Radix et Rhizoma (Gancao, roasted) in equal parts.
Preparation and Administration: Coarsely powdered. Take 3 qian per dose, decoct with 1.5 cups of water until reduced to one cup. Strain, take 0.6 cup of clear liquid, add a little Bamboo Juice (Zhuli), boil briefly, and take warm after meals. Twice daily.

Shichuan Fuling Wan: Treats arm traction or trembling inability to hold objects; immediate relief upon administration. Also treats Spleen Qi deficiency with phlegm pathogen interaction stagnating in Zhongwan, causing spasmodic pain in arm sinews.
Ingredients: Poria (Fuling) and Pinelliae Tuber (Banxia, ginger-processed, 2 liang each), Aurantii Fructus (Zhiqiao, bran-fried, 0.5 liang), and Natrii Sulfas (Fenghua Puxiao, 1 liang).
Preparation and Administration: Powdered. Make pills with ginger juice paste, size of wisteria seeds. Take 20 pills per dose after meals with ginger water.