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MENTAL MODEL · M1981

Rigid and Soft Tetany

Rigid and Soft Tetany
TechnicalmediumTraditional Chinese Medicine
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Updated 2026-08-01

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INTRODUCTION

English translation pending.

CORE DEFINITION

Tetany, or jing bing, presents with opisthotonus and convulsions. In the Shanghan Lun it is split by sweating and pulse: fever without sweat and a tight pulse is gang jing, rigid tetany, marked by cold binding the exterior as an excess pattern; fever with sweat and a deep thin pulse is rou jing, soft tetany, marked by depleted fluids as a deficiency pattern. The qualifier is that the same convulsion demands opposite treatments, so pattern differentiation must precede any antispasmodic measure.

SCAFFOLDING EFFECT

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- First checkpoint: check for sweating before touching any convulsion, since it splits the two patterns - Prescription fork: no sweat points to releasing the exterior, sweat points to nourishing fluids - Error guard: prevent the classic mistake of promoting sweat in a depleted patient

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Exterior cold binds the pores, so fluids cannot disperse and the sinews are seized, producing rigid spasm that resolves when the exterior is released. In soft tetany the fluids are already exhausted, so the sinews are starved and contract; sweating would remove more fluid and worsen the condition. Same symptom, opposite causes, so the direction of fluid movement decides the treatment.

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Source support: Explicit

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    bohe.cnhttps://www.bohe.cn/article/view/0bswps0vkrav0bc.htmlZH · Explicit
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