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The Taiyang disease (Taiyang syndrome), Jing (spasm/stiffness), and Shi (dampness) caused by Shanghan (cold damage) are three types that should be discussed separately, as they resemble Shanghan symptoms, hence they are presented here.

"Zhi" should be "Jing", which is a transcription error. "Zhi" means aversion to cold, not stiffness. The *Neijing* states: "When lung heat transfers to the kidney, it transforms into Rou Jing (soft spasm)." Rou Jing manifests as flaccid tendons and weakness; Jing refers to rigid bones and involuntary movement. Jing means stiffness; the *Qianjin Fang* defines Jing as stiffness and straightening. The classics state: "Stiffness and tension of the neck and back, trismus (lockjaw), and opisthotonos constitute Jing." From this, it is clear that "Zhi" is "Jing".

In Taiyang disease, if there is fever, anhidrosis (absence of sweating), and contrary aversion to cold, it is named Gang Jing (stiff spasm).

The *Qianjin Fang* says: "If Taiyang wind-stroke is compounded by cold-dampness, it transforms into Jing disease." In Taiyang disease, fever with anhidrosis indicates exterior excess, which should not involve aversion to cold. The presence of contrary aversion to cold indicates that Taiyang wind-stroke has been compounded by cold, resulting in Jing disease. Because the exterior is excess and affected by cold, it is called Gang Jing.

In Taiyang disease, if there is fever, sweating, and no aversion to wind/cold (Zhao edition adds "er"), it is named Rou Jing (soft spasm).

In Taiyang disease, fever with sweating indicates exterior deficiency, which should involve aversion to cold. If there is no aversion to cold, it is Yangming disease. However, fever with sweating but no aversion to cold is not a Yangming pattern; rather, it is Taiyang wind-stroke compounded by dampness, resulting in Rou Jing. Because the exterior is deficient and affected by dampness, it is called Rou Jing.

In Taiyang disease, if there is fever and the pulse is deep and fine, it is named Jing disease.

Taiyang governs the exterior. Fever in Taiyang disease indicates an exterior condition, so the pulse should be floating and large. A deep and fine pulse indicates the condition is unresolving; this is Taiyang wind-stroke compounded by dampness, transforming into Jing disease.

The *Jingui Yaolue* states: "In Taiyang disease, when symptoms are complete, the body is stiff, [rigid], and the pulse is contrary deep and slow, this is Jing disease, treated with Gualou Guizhi Tang."

Excessive sweating in Taiyang disease can lead to Jing disease.

Excessive sweating in Taiyang disease leads to the loss of Yang qi. The *Neijing* states: "Yang qi, in its refined aspect, nourishes the spirit; in its soft aspect, it nourishes the tendons." Weak Yang qi cannot nourish the tendons, leading to tendon tension and the formation of Jing disease.

If a patient presents with fever, cold feet, stiffness and tension of the neck and back, aversion to cold, intermittent fever in the head, red face, red eye veins, isolated head tremor, sudden trismus, and opisthotonos, this is Jing disease.

Taiyang wind-stroke represents pure wind-strike; Taiyang cold damage represents pure cold damage; neither produces Jing. Only when Taiyang wind-stroke is compounded by cold-dampness does it transform into Jing.

Fever and cold feet indicate injury to the lower part by cold-dampness. Intermittent head fever, red face, and red eye veins indicate injury to the upper part by wind. Head tremor occurs because wind is active; isolated head tremor occurs because the head is the meeting point of all Yang meridians, and wind injures Yang. If purely injured by wind, the whole body would tremble and limbs would convulse; here, internal cold-dampness causes only the head to tremble. Trismus occurs because cold governs contraction and urgency. Sudden trismus implies it is not constant but intermittent. If wind and cold contend, trismus would be constant without opening; here, compounded by wind-dampness, it becomes sudden trismus.

The Foot-Taiyang Bladder meridian originates from the inner canthus, ascends to the forehead, and intersects at the vertex. Its branch enters the brain from the vertex, emerges, descends behind the neck, runs along the medial shoulder blade,夹 spine to the waist, passes through the buttocks, and descends to the foot. When wind-cold lodges in the meridian, it causes tendon tension, resulting in neck/back stiffness and opisthotonos.

In Taiyang disease, if joint pain is accompanied by vexation and the pulse is deep and fine (Zhao edition notes: "alternatively slow"), it is named Shi Bi (Dampness Bi). (Zhao edition notes: "alternatively Zhong Shi"). The manifestation of Shi Bi includes difficult urination and loose stools; treatment should focus on promoting diuresis.

The *Jingui Yaolue* states: "Mist injures the skin and interstices; dampness flows into the joints. Pain with vexation indicates internal flow of dampness. Dampness is similar to water; a deep and fine pulse indicates water's tendency to flow downward. Bi means pain. Due to joint pain and vexation, it is named Shi Bi, distinct from podagra-type Bi. The *Neijing* states: 'Excess dampness leads to watery diarrhea.' Difficult urination and loose stools indicate internal excess of dampness. Promoting diuresis excretes abdominal dampness. Ancient wisdom says: treating dampness without promoting diuresis is incorrect."

Patients with chronic dampness present with generalized body pain, fever, and a yellowish complexion resembling smoke-stained yellow.

A bright orange-yellow complexion indicates Yangming blood stasis and heat. A smoke-stained yellow is not Yangming blood stasis. Yellow complexion with fever is treated with Zhizi Bopi Tang, indicating interior and exterior heat without body pain. Generalized body pain is not due to pathogenic heat from Shanghan but indicates dampness in the meridians. The spleen dislikes dampness; dampness injuring the spleen causes color changes, leading to jaundice. This smoke-like yellow is not true yellow.

Patients with chronic dampness may have sweating only on the head, back stiffness, and a desire to cover up and face fire. Premature purging may cause hiccups, chest fullness, difficult urination, and a tongue coating resembling moss, due to heat in the Dan Tian and cold in the chest. Thirst with inability to drink results in dry mouth and vexation.

Chronic dampness involves wind-damp or cold-damp; here, cold-damp contends. Excess dampness causes sweating; cold damage causes anhidrosis. Cold-damp contention allows sweating but not over the whole body, hence only head sweating. The back is Yang, the abdomen Yin. The Taiyang meridian runs along the spine to the waist; external cold-damp obstructs Taiyang, causing back stiffness. Interior pathogens do not cause aversion to cold; exterior pathogens do. Desire to cover up and face fire indicates aversion to cold due to exterior cold-damp. Premature purging damages stomach Qi and fluids, causing hiccups, chest fullness, and difficult urination. Post-purging interior deficiency causes upper Jiao Yang Qi to sink to the lower Jiao (heat in Dan Tian), while exterior cold enters the chest (cold in chest), producing a white slippery tongue coating. Interior dryness causes thirst, but external cold-damp prevents drinking, resulting in dry mouth and vexation.

If a dampness patient is purged, presenting with sweating on the forehead, slight wheezing, and free urination (Zhao edition notes: "alternatively difficult"), death ensues. If diarrhea persists, death also ensues.

Dampness patients recover with sweating. The *Jingui Yaolue* states: "For dampness with body vexation and pain, Mahuang Jia Zhu Tang (Ephedra plus Atractylodes Decoction) is appropriate to induce mild sweating; improper purging is a major error." Sweating on the forehead with slight wheezing indicates upward reversal of Yang Qi. Free urination or diarrhea indicates downward flow of Yin Qi. Separation of Yin and Yang leads to death. The *Neijing* states: "When Yin and Yang separate, essence and Qi perish."

Question: Wind-damp contends, causing generalized pain. According to principles, sweating should resolve it. Why does it fail to resolve during continuous rainy weather? Answer: Profuse sweating expels wind but leaves dampness, hence no resolution. For wind-damp, inducing mild sweating ("slightly desiring sweat") expels both wind and damp.

Continuous rain indicates dampness excess. The *Neijing* states: "Yang receives wind; Yin receives dampness." Also: "Wind injuries affect the upper first; damp injuries affect the lower first." In wind-damp contention, wind is exterior, damp is interior. Profuse sweating is violent, expelling exterior pathogens but failing to expel interior ones, leaving dampness. Mild sweating is gentle, allowing both interior and exterior pathogens to exit, resolving both wind and damp.

A dampness patient with body pain, fever, yellow face, wheezing, headache, nasal congestion, and vexation, with a large pulse, normal appetite, and harmonious abdomen, has cold-damp in the head causing nasal congestion. Nasal medication resolves it.

Diseases vary in depth; symptoms vary in location. This is shallow dampness. Why? Lack of joint pain indicates dampness is not in joints but on the muscle surface. Fever with yellow face and wheezing, rather than smoke-stained yellow, indicates dampness affects the Upper Jiao, not the spleen. Headache and nasal congestion indicate dampness affects Yang, not Yin. While dampness pulses are typically deep and fine, a large pulse indicates dampness is not internal but superficial. Normal appetite and absence of abdominal distension confirm mild, shallow dampness. Nasal medication vents cold-damp from the head.

Generalized body pain, fever, worsening in the late afternoon characterizes Feng Shi (Wind-Damp). This results from sweating exposed to wind or prolonged exposure to cold.

Generalized pain is dampness; afternoon-worsening fever is wind. Sweating exposed to wind implies dampness first, then wind; prolonged cold exposure implies wind first, then dampness. Treat with Mahuang Xingren Yiyi Ren Gancao Tang (Ephedra, Apricot Seed, Coix Seed, Licorice Decoction), see *Jingui Yaolue*.

Taiyang Zhongre (Summerheat-Heat) is Shu (Summerheat). Symptoms include sweating, aversion to cold, fever, and thirst.

Sweating, aversion to cold, fever without thirst is Wind-Strike. Sweating, aversion to cold, fever with thirst is Zhong Shu (Summerheat Strike). Treat with Baihu Jia Renshen Tang (White Tiger plus Ginseng Decoction), see *Jingui Yaolue*.

Taiyang Zhong Shu presents with fever, heavy body pain, and weak pulse. This results from consuming cold water in summer, causing water to circulate in the skin.

The classics state: "Weak pulse and fever result from Summerheat." Fever with weak pulse is Summerheat; heavy body pain is water-damp. Treated with Yi Wu Gua Di San (Single Herb Melon Pedicle Powder), see *Jingui Yaolue*.

Taiyang Zhong Shu presents with fever, aversion to cold, heavy body pain, string-taut/fine/cupping/slow pulse, chills after urination, cold extremities, fever upon slight exertion, open mouth, and dry anterior teeth. Sweating worsens aversion to cold; warming needles worsen fever; repeated purging worsens strangury.

This is a simultaneous exterior-interior condition. Fever, aversion to cold, heavy pain indicate exterior Summerheat. String-taut/fine/cupping/slow pulse indicates Summerheat deficiency. Chills after urination and cold extremities indicate insufficient Taiyang Qi. Fever upon exertion indicates Summerheat triggered by moving Yang. Open mouth and dry teeth indicate interior heat. The *Neijing* states: "Due to Summerheat sweating, vexation leads to panting." Open mouth signifies panting; continuous panting dries the anterior teeth. Sweating depletes exterior Yang, worsening aversion to cold. Warming needles aggravate interior fire, worsening fever. Purging depletes interior, drying the bladder, worsening strangury.