Worse in Late Afternoon
Updated 2026-08-01
INTRODUCTION
English translation pending.
CORE DEFINITION
Ri bu suo ju describes a pattern in which symptoms, classically tidal fever, worsen in the late afternoon during the shen hour, roughly three to five o'clock. That period is when the yangming channel's qi is at its peak, so the intensification points toward yangming fu excess, such as accumulation in the intestines. The qualifier is that the timing is the diagnostic clue: the same fever at another hour would suggest a different pattern, and treatment follows the mechanism.
SCAFFOLDING EFFECT
Reduce cognitive load
- Time stamp: treat the hour of peak intensity as a locator for the underlying mechanism - Rhythm chart: log symptom intensity against time instead of judging a single snapshot - Treatment trigger: when the peak falls in the late afternoon, consider clearing the bowels
Anchor fast decisions
The body's qi moves through the channels in a daily cycle, and each channel peaks at its own hour. When pathogens lodge in the yangming and the upright qi gathers to fight them at the channel's peak, the struggle intensifies and symptoms spike. The timing therefore reveals where the conflict sits, which is why the same fever at a different hour implies a different site.
MINIMUM ACTION
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