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Taiyang wind-stroke (Taiyang wind-stroke, a syndrome caused by wind pathogen invading the Taiyang channel), presenting with diarrhea and vomiting/retching, if the exterior syndrome has resolved, may then be treated with purgation. If the patient has sweating, occurring at specific times, headache, fullness and hardness in the epigastrium (epigastric region), pain radiating to the hypochondrium, dry retching, shortness of breath, sweating without aversion to cold, this indicates that the exterior is resolved but the interior is disharmonious; Shizao Tang (Ten Jujube Decoction) should be used to govern it.

Wind-stroke causing diarrhea and vomiting/retching originally belongs to the indication for Gegen Jiaban Xia Zhu Tang (Pueraria and Pinellia Decoction). If the exterior is already resolved but water qi overflows, failing to use Shizao Tang to attack the water will lead to severe deficiency of Stomach Qi, making subsequent treatment difficult. However, although diarrhea and vomiting/retching are interior syndromes, they originate from wind-stroke, so one must carefully examine whether the exterior is truly resolved. If the patient sweats, it seems like an exterior syndrome, but since it occurs at specific times, the disease is not in the exterior. Headache is typically an exterior syndrome, but if there is no aversion to cold or fever, only fullness and hardness in the epigastrium with radiating pain in the hypochondrium, this is due to water qi overflowing from the heart area, attacking upward to the head causing headache. This is similar to "Shanghan (Cold Damage) with constipation for six or seven days accompanied by headache, treated with Chengqi Tang." Dry retching and sweating suggest the pathogen is in the exterior, yet sweating occurring at specific times, combined with no aversion to cold, and dry retching with shortness of breath, clearly indicate an interior syndrome. Thus, the wind pathogen in the exterior has resolved, while the water qi in the interior is disharmonious. Various disorders caused by water qi may present as wheezing, thirst, choking sensation, palpitations, irritability, diarrhea without vomiting, vomiting without diarrhea, or vomiting and diarrhea without sweating. In this case, water qi moves outward to the skin and hair causing sweating, moves upward to the throat causing vomiting/retching, and moves downward to the intestines and stomach causing diarrhea. The momentum is vast and uncontrollable; unless a potent diuretic agent is used to directly subdue it, the Middle Qi will not withstand it. Therefore, the Shizao Tang formula is vastly different from methods such as Wuling San (Five-Ingredient Poria Pill), Xiao Qinglong Tang (Minor Blue Dragon Decoction), and Xiexin Tang (Drain the Epigastrium Decoction).

Combined diseases of Taiyang and Yangming, and combined diseases of Taiyang and Shaoyang, both present with diarrhea and vomiting/retching; these all share the root cause of Taiyang wind-stroke.

Shizao Tang (Ten Jujube Decoction):
Yuanhua (Genkwa Flos, prepared until reddish) Gansui (Kansui Radix) Daji (Euphorbiae Pekinensis Radix) (equal parts)

The above three herbs are separately pounded and sifted, weighed, and then mixed. Take one sheng and half of water, boil ten large jujubes (Ziziphi Fructus), reduce to eight ge, remove the jujubes, and add the herbal powder. For strong individuals, administer one qianbi (a measure equivalent to a square inch spoonful); for frail individuals, half a qianbi. Take warm on an empty stomach in the morning. If the purgation is slight and the disease does not resolve, take again the next day, increasing the dose by half a qianbi. After obtaining rapid purgation, nourish oneself with millet porridge.