言。舌喑者，舌本不能言，而喉中之声音如故。中风而舌喑者，舌与喉俱病，而音声不
能发于会厌也。然有外感、内伤之因。外感者，风寒火热之邪也。经云∶风寒客于会厌，
则厌不能发，故无音。又曰∶诸热暴喑，皆属于火。内伤者，心、肺、肾三经致病，亦
多由痰火壅塞上窍，气血两虚，不能上荣，则舌机不转也。有肾虚而气不归源，内夺而
胞络内绝，不能上接清阳之气者；有元气不足，肺无所资者；有血衰而心失所养者。盖
心为声音之主，肺为声音之户，肾为声音之根。经曰∶三焦之气，通于喉咙，气弱则不
能上通矣。治者能于根本用力，则丹田清阳之气，自能宣扬振作，故古人每以独参汤、地
黄饮子取效也。然中风不语之症有六∶有失音不语者，有舌强不语者，有神昏不语者，有
（接上文）说。舌喑者，舌根不能转动而说话，但喉咙中的声音依然正常。中风导致舌喑的，是舌头和喉咙都患病，导致声音无法从会厌发出。然而其病因有外感和内伤之分。外感的，是风寒火热之邪。医经记载：风寒侵袭会厌，则会厌不能开合，所以失音。又说：各种热病导致的突然失音，都属于火邪。内伤的，由心、肺、肾三经致病引起，也多因痰火壅塞上窍，气血两虚，不能上行荣养，导致舌体机关不灵活。有的因肾虚而气不归元，内夺导致胞络内部隔绝，不能上接清阳之气；有的因元气不足，肺脏无所依托资助；有的因血衰而心脏失去滋养。大概心是声音的主宰，肺是声音的门户，肾是声音的根本。医经说：三焦之气，通达于喉咙，气弱则不能上行通达。治疗者若能从根本上用力，则丹田的清阳之气，自然能够宣扬振作，所以古人常用独参汤、地黄饮子取得疗效。然而中风不语的症状有六种：有失音不语的，有舌强不语的，有神昏不语的，有……
Speaking. "Sheyin" (tongue aphonia) refers to the inability of the tongue root to move for speech, while the voice from the throat remains normal. In stroke-induced sheyin, both the tongue and the throat are diseased, preventing the voice from being emitted by the epiglottis. However, the etiology can be either external contraction or internal injury. External contractions involve pathogenic factors of wind-cold, wind-heat, or fire. The Classics state: "When wind-cold invades the epiglottis, it fails to open and close, resulting in loss of voice." It also states: "All cases of sudden aphonia due to heat belong to fire." Internal injuries are caused by dysfunction of the Heart, Lung, and Kidney meridians, often due to phlegm-fire obstructing the upper orifices, with deficiency of both Qi and Blood failing to ascend and nourish, leading to immobility of the tongue mechanism. Some cases arise from Kidney deficiency where Qi fails to return to its source, with internal depletion causing severance of the Bao-Luo (uterine/pericardium collateral), preventing the ascent of Clear Yang Qi. Others result from insufficiency of Yuan Qi (Original Qi), leaving the Lung without support; still others stem from blood deficiency, causing the Heart to lose nourishment. Generally, the Heart is the master of voice, the Lung is the door of voice, and the Kidney is the root of voice. The Classics say: "The Qi of the Sanjiao (Triple Burner) connects to the larynx; when Qi is weak, it cannot ascend." If the practitioner exerts effort on the root cause, the Clear Yang Qi of the Dantian will naturally be promoted and revitalized. Therefore, ancient physicians often achieved success using Dushen Tang (Single Ginseng Decoction) and Dihuang Yinzi (Rehmannia Infusion). However, there are six types of aphonia in stroke: those with loss of voice and inability to speak, those with stiff tongue and inability to speak, those with clouded spirit and inability to speak, and those...