has part has part characteristic of inheres in has modifier Abnormal lower lip morphology Thin vermilion border Thin lower lip vermilion 2009-07-12T10:17:22Z Normal values for the height of the vermilion are available [Farkas, 1981] but measurements are not commonly used. Most clinicians determine this feature subjectively. The height of the vermilion of the lower lip varies considerably among ethnic groups, and the vermilion should be compared to a population of same ethnic background. If the lower lip vermilion is thin, the inferior border of the vermilion is less curved, and on a profile view, the lower lip vermilion is less convex than usual. HP:0010282 Decreased volume of lower lip Thin lower lip Thin vermilion border of lower lip UMLS:C2053440 Decreased height of lower lip vermilion Decreased volume of lower lip vermilion Thin red part of the lower lip Height of the vermilion of the medial part of the lower lip more than 2 SD below the mean. Alternatively, an apparently reduced height of the vermilion of the lower lip in the frontal view (subjective). abnormal decreased thickness lower lip