Taiyang disease, fever, sweating, aversion to wind, and a slow pulse are called apoplexy.

bubble_chart Note

• Taiyang disease refers to the condition described in the first article, characterized by a floating pulse, stiffness and pain in the head and neck, and aversion to cold.
• The defensive qi is the yang of the exterior, and wind is a yang pathogen. When wind pathogens invade a person, the defensive qi is affected, following its nature. When wind invades the defensive qi, it causes fever because both wind and the defensive qi are yang in nature and inherently hot, thus generating heat quickly, unlike cold-damage disease which requires blockage and stagnation before heat is generated. When the defensive qi is impaired, it cannot secure the exterior and is further steamed by the yang pathogen, leading to the opening of the striae and interstices and resulting in sweating.
• Sweating leads to exterior deficiency, which is then affected by wind, causing aversion to wind.
• The nature of wind is soft, hence the pulse becomes slow.
• This follows the previous article, stating that when taiyang disease is accompanied by these pulse and symptoms, it is called apoplexy, serving as a summary for the condition.
• Hereafter, whenever apoplexy is mentioned, it refers to these pulse and symptoms.

bubble_chart Collected Annotations

• Fang You-zhi said: "A slow pulse refers to what is described below as floating yang and weak yin. It means that when taiyang disease, as described in the first article, is accompanied by fever, sweating, aversion to wind, and a slow pulse, the illness is caused by exposure to wind, hence it is called apoplexy."
• Wang Hu said: "Apoplexy is not what Dongyuan referred to as affecting the fu organs, zang organs, or blood vessels. The term 'zhong' (中) here has the same meaning as 'shang' (伤, injury). In Zhongjing's discussions, he does not directly refer to it as common cold, fearing that later scholars might confuse it with common cold symptoms like coughing, stuffy nose, and heavy voice, hence using the term 'zhong' to distinguish it. A slow pulse should be interpreted as floating and slow; floating is the pulse of taiyang disease, and slow is the pulse of apoplexy. The tight pulse mentioned in the middle section should also be understood similarly."