Spleen Constraint / Pi Yue
Updated 2026-07-31
INTRODUCTION
English translation pending.
CORE DEFINITION
A pattern named in the Shanghan Lun, in which dryness and heat in the stomach constrain the spleen so that it can no longer distribute fluid to the large intestine and the fluid seeps into the bladder instead. The result is hard stool with frequent urination, sometimes with no bowel movement for ten days yet little distress. Its proposition is that constipation here reflects a failure of fluid distribution rather than a mass of dry stool, so it is treated by moistening with Maziren Wan rather than by purging. The qualification is that this must be separated from excess heat with a bound interior.
SCAFFOLDING EFFECT
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- Diverted irrigation: look for fluid going somewhere other than where it is needed. - Two symptoms, one cause: read hard stool and frequent urine as a single distribution failure. - Moist, do not blast: correct dryness instead of forcing the passage open.
Anchor fast decisions
When heat dries the stomach and constrains the spleen, the fluid that should moisten the intestine is routed to the bladder. The intestine therefore dries out while urine output rises, and because the problem is a routing error rather than an obstruction, purgation only removes water the body still needs and the constipation returns.
MINIMUM ACTION
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