has part has part characteristic of inheres in has modifier Abnormal lower lip morphology Thick lower lip vermilion Increased height of lower lip vermilion Full lower lip vermilion UMLS:C2053437 HP:0000170 UMLS:C1839739 Increased volume of lower lip vermilion Increased thickness of the lower lip, leading to a prominent appearance of the lower lip. The height of the vermilion of the lower lip in the midline is more than 2 SD above the mean. Alternatively, an apparently increased height of the vermilion of the lower lip in the frontal view (subjective). Thick vermilion border of lower lip Thick red part of the lower lip Increased volume of lower lip Prominent lower lip Full lower lip Plump lower lip Prominent lower lip vermilion HP:0000179 Thick lower lip 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 lower lip is typically thicker than the upper one. The height of the vermilion of the lower lip varies among ethnic groups, and the vermilion should be compared to a population of same ethnic background. When the vermilion is thick, it is more convex and more everted than usual on profile view, but that should be assessed separately. Thick vermilion border abnormal prominent lower lip