Vermilion, Upper Lip, Thin

Definition:

Objective: Height of the vermilion of the upper lip in the midline more than 2 SD below the mean

Subjective: apparently reduced height of the vermilion of the upper lip in the frontal view

Comments:

Normal values for the height of the vermilion are available [Farkas, [1981]], but measurements are not commonly used. Most clinicians determine this feature subjectively or use the Likert scale for Caucasians and African Americans [Astley and Clarren, [2000]] (see Fig. 2 from Vermilion, Upper Lip, Thick). The height of the vermilion of the upper lip varies among ethnic groups, and the vermilion should be compared to a population of same ethnic background. The thinness of the upper lip vermilion is sensitive to facial expression (see Anatomy Section). On profile view, a thin vermilion is less convex than usual. A thin upper lip vermilion may be associated with a smooth philtrum and an absence of the Cupid's bow, but these should be assessed separately.

Replaces:

• Thin Vermilion Border
• Thin Upper Lip

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