Phlegm, Rheum, Water and Damp become pathogenic when their metabolism becomes disordered

Phlegm, Rheum, Water and Damp become pathogenic when their metabolism becomes disordered. Of the same source, and inter-transformable, they are classified as:
	•	Damp — a wandering pathogenic Body Fluid.
	•	Water — a gathering pathogenic Body Fluid.
	•	Rheum — a Body Fluid with pathogens.
	•	Phlegm — concentrated Rheum.

Jingui Yaolue classified Rheum as:
	•	Phlegmatic Rheum of the abdomen.
	•	Suspending Rheum of the chest or diaphragm.
	•	Sustaining Rheum of the hypochondriac area.
	•	Overflowing Rheum of the skin and muscles.