Foundation Knowledge

Greasy Coating

A greasy coating commonly indicates phlegm, dampness, food retention, or other turbid obstruction.

Foundation

Structured knowledge card

tongue
Definition

A greasy coating feels thick, sticky, and turbid, suggesting retention rather than pure deficiency.

Clinical Meaning

It often points toward phlegm, dampness, phlegm-heat, food retention, or damp obstruction of the middle burner.

Pitfall / Exam Tip

A greasy coating usually means something turbid is obstructing. Do not reduce the case to pure deficiency or pure emotional stagnation too quickly.