Sublingual Vessels
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Normal |
Visible under the tongue, length d <= 2.7mm does not exceed 3/5 of the line from the tip of the tongue to the sublingual meat mound, dark red in color, without tension, tightness, curvature, or hyperplasia, mostly single branches. |
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Pathological |
Vessels are thickened or appear cyanotic, crimson, purplish-red, or dark purple, or the small sublingual vessels present as a dark red or purple network, or the sublingual vessels are varicose resembling nodules of varying sizes like purple beads. These changes indicate blood stasis or phlegm-damp obstruction, leading to impaired vessel flow. |
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Vessels are short and thin, color is pale |
Indicates deficiency of Qi and blood, with insufficient vessel filling. |