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Dark Blood in Stool

How Chinese medicine differentiates dark blood in the stool into the five patterns described for it, and the points for each. Supportive reading only. Distinct from this site's Hematochezia and Hemorrhoids pages. Acupuncture only — no herbs.

This page is educational, for practitioners and students — it is not a diagnostic tool and does not replace a proper in-person assessment. Black, tarry or dark bloody stools can signal bleeding higher in the digestive tract (ulcer, varices, tumour) and always need urgent medical assessment. Acupuncture is at most a supportive adjunct.
General Acupuncture Points

Acupuncture points traditionally used for dark blood in the stool — 3 key points, used across the patterns below rather than tied to just one.

PointKey action
ST-36Benefits Stomach and Spleen. Tonifies Qi and Blood. Tonifies the Original Qi.
SP-6Strengthens the Spleen. Resolves Dampness. Promotes the function of the Liver and the smooth flow of Liver-Qi.
BL-20Tonifies Spleen and Stomach. Resolves Dampness. Regulates the Intestines.
The Five Patterns

↑ reinforcing   ↓ reducing   ⊥ even method.

1. Spleen Not Controlling Blood View full pattern →

Clinical manifestations: Dark, tarry stools; overwhelming fatigue; pale complexion; poor appetite; easy bruising.
Tongue: Pale, puffy, tooth-marked, thin white coat. Pulse: Fine and weak.
Treatment principle: Tonifies Spleen Qi to restore containment of the Blood.
Note: moxa is appropriate. Linked to this site's own Spleen-not-controlling-Blood slide.

2. Damp-Heat in the Large Intestine View full pattern →

Clinical manifestations: Dark tarry stools with a foul smell; anal burning; urgent diarrhea; thirst; scanty dark urine.
Tongue: Red, thick yellow greasy coat. Pulse: Rapid and slippery.
Treatment principle: Clears Damp-Heat, cools the Blood and stops bleeding.
Note: no moxa.

3. Spleen Yang Deficiency View full pattern →

Clinical manifestations: Dark or black stools; cold hands and feet; dull abdominal pain relieved by warmth; loose, watery stools.
Tongue: Pale, puffy, white slippery coat. Pulse: Deep, slow and weak.
Treatment principle: Warms the Middle Burner, restores Yang and contains the Blood.
Note: moxa is strongly indicated.

4. Spleen Deficiency with Dampness

Clinical manifestations: Loose dark stools; bloating after eating; heaviness; greasy mouth sensation.
Tongue: Pale, swollen, white greasy coat, tooth-marked. Pulse: Soggy and slow.
Treatment principle: Tonifies the Spleen, drains Dampness and stops bleeding.
Note: Mixed Deficiency/Excess. No deck slide combines Spleen deficiency with Dampness — no pattern link is given here.

5. Blood Deficiency

Clinical manifestations: Persistent dark blood; dizziness; pale face, lips and nails; palpitations; scanty pale menstrual flow.
Tongue: Pale, thin, thin white coat. Pulse: Fine and weak.
Treatment principle: Nourishes Blood, rebuilds reserves and strengthens containment.
Note: moxa is appropriate. No plain Blood-deficiency slide fits this presentation — no pattern link is given here.
Related conditions

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