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In Taiyang cold damage (Taiyang Cold Damage), characterized by fever, sweating only on the head, dysuria (difficult urination), and thirst for fluids, this indicates stagnant heat trapped within the interior, which will inevitably lead to jaundice. The appropriate formula is: Gardenia Fruit (Zhi Zi, 3 qian), Licorice Root (Gan Cao, roasted, 1 qian), Phellodendron Bark (Huang Bo, 2 qian). Decoct in water and take orally.

When the body exhibits a yellow color resembling orange peel, accompanied by abdominal fullness and constipation, purgation may be employed. The formula consists of: Yin Chen Hao (Artemisiae Scopariae Herba, 3 qian), Gardenia Fruit (Zhi Zi, 2 qian), Rhubarb Radix et Rhizoma (Da Huang, 2 qian). Decoct in water and take orally. The urine should resemble soap pod juice; after one night, abdominal distension will subside, and the jaundice will exit via the urine.

The syndrome of Yin Jaundice presents with a cold body and a deep, fine pulse, indicating cold-dampness in the Taiyin meridian. The skin appears dull yellow like smoked tobacco, unlike the bright orange-yellow hue of Yang Jaundice. One must inquire whether urination is difficult or free. If urination is difficult, the aforementioned formula (Yin Chen Hao Tang) is suitable; if urination is free, the primary formula is Yin Chen Zhu Fu Tang. Ingredients: Yin Chen Hao (3 qian), Atractylodes Macrocephala Rhizome (Bai Zhu, 2 qian), Aconite Lateralis Radix Praeparata (Fu Zi, 0.5 qian), Dried Ginger (Gan Jiang, 0.5 qian), Licorice Root (Gan Cao, roasted, 1 qian), Cinnamon Twig (Rou Gui, peeled, 0.3 qian). Decoct in water and take orally.

Spasm (Jing) is characterized by stiffness and rigidity of the neck and back, head tremors, trismus (locked jaw), and opisthotonos (backward arching of the back). This results from Wind invasion of the Taiyang channel compounded by Cold-Dampness. If there is sweating and aversion to wind, it is termed Flexible Spasm (Rou Jing); if there is no sweating and aversion to cold, it is termed Stiff Spasm (Gang Jing). Both are treated with Modified Xu Ming Tang. However, spasm syndromes differ by involvement of the three Yang meridians, or may arise from excess heat in the stomach fu organs, cold in the three Yin meridians, or deficiency of Qi and Blood due to internal injury; these distinctions must not be overlooked. For instance, head tremors, trismus, and opisthotonos indicate Taiyang Spasm. If the head is lowered with downward gaze, limbs are pulled and restricted, and elbows and knees touch, it indicates Yangming Spasm. If eyes deviate sideways and one arm and leg convulse, it indicates Shaoyang Spasm. Furthermore, if there is trismus, chest fullness, inability to lie flat (opisthotonos so severe the back does not touch the bed), calf cramps, constipation, and teeth grinding, this is caused by excess heat in the Yangming stomach fu organ, and San Yi Cheng Qi Tang should be used to purge. If there is fever, deep and fine pulse, cold extremities, and spontaneous cold sweat, it is Yin Spasm, caused by Wind-Cold invading the zang organs, treated with Fu Zi Li Zhong Tang plus Saposhnikovia Root (Fang Feng) and Cinnamon Bark (Rou Gui). There are also cases of spasm due to internal injury where Liver Blood is insufficient, leading to dry blood generating Wind, presenting with deviated eyes and hand convulsions, treated with Xiao Yao San plus Ginseng Radix (Ren Shen) and Taxillus Herba (Sang Ji Sheng). The Classic states: "All wind syndromes involving tremors and vertigo belong to the Liver." If Spleen deficiency leads to hyperactive Wood attacking Earth, use Wu Wei Yi Gong San plus Bupleurum Root (Chai Hu), Peony Root (Shao Yao), Aucklandiae Radix (Mu Xiang), and Uncaria Ramulus cum Uncis (Gou Teng). If Spleen Qi is constrained, use Jia Wei Gui Pi Tang. After severe illness or postpartum, when Qi and Blood are severely deficient, use Shi Quan Da Bu Tang plus Gou Teng and Sang Ji Sheng; if ineffective, urgently add Fu Zi. This constitutes the general principles for treating spasm syndromes.