Vermilion border

The vermilion border (sometimes spelled vermillion border), also called margin or zone, is the normally sharp demarcation between the lip and the adjacent normal skin. It represents the change in the epidermis from highly keratinized external skin to less keratinized internal skin. It has no sebaceous glands, sweat glands, or facial hair.[1][2]

Vermilion border
Human lips with the vermilion border outlined. A patch of Erythema above the upper lip makes it more difficult to distinguish the vermilion border.
This left cheek incision extends from the left commissure towards the left ear and it breaches the vermilion border (click to see close-up). In order to maintain aesthetics as best possible, the first suture was placed at or near the vermilion border to ensure a contiguous line upon healing.
Details
Identifiers
Latinpars intermedia labiorum oris
THH3.04.01.0.00010
Anatomical terminology

It has a prominence on the face, creating a focus for cosmetics (it is where lipstick is sometimes applied) and is also a location for several skin diseases. Its functional properties, however, remain unknown.[3]

Structure

The lips are composed wholly of soft tissue. The skin of the face is thicker than the skin overlying the lips where blood vessels are closer to the surface. As a consequence, the margin of the lips shows a transition between the thicker and thinner skin, represented by the vermilion border. It therefore has the appearance of a sharp line between the coloured edge of the lip and adjoining skin.[4]

It has been described as a pale, white rolled border and also as being a red line.[1][5]

This fine line of pale skin accentuates the colour difference between the vermilion and normal skin. Along the upper lip, two adjacent elevations of the vermilion border form the Cupid's bow.[6]

Microanatomy

The vermilion border represents the change in the epidermis from highly keratinized external skin to less keratinized internal skin. It has no sebaceous glands, sweat glands, or facial hair.[2][1]

There are two reasons that the border appears red in some people:

  1. The epithelium is thin and therefore the blood vessels are closer to the surface.[7]
  2. This epithelium contains eleidin which is transparent and the blood vessels are near the surface of the papillary layer, revealing the "red blood cell" color. At the angles of the mouth, there are sebaceous glands, without hair follicles, which are called Fordyce spots.[2][8]
A cupid's bow on the upper lip.

Clinical significance

The vermilion border is important in dentistry and oral pathology as a marker to detect disease, such as in actinic cheilitis.[9]

Associated diseases
  • Perioral dermatitis is a rash typically around the mouth, that spares the vermilion border.[10]
  • Cheilitis glandularis may present with a burning sensation over the vermilion border. This chronic progressive condition is associated with thinning of the skin of the lips and ulceration.[11]
  • Infections may involve the vermilion border. Cold sores are one common infection.[12] Impetigo is another.[13]
  • Skin cancer can also occur at the vermilion border.[9]

Cosmetic appearance
  • Sunlight exposure can blur the junction between the vermilion border and the skin. Applying lip balm and sunscreen moisturizes protects it from sunlight.[14]

Surgery

A vermilionectomy (sometimes spelled vermillionectomy) is the surgical removal of the vermilion border. It is sometimes performed to treat carcinoma of the lip.[15]

Close attention is given when repairing any injury to the vermilion border. Even 1 mm of vermilion misalignment could be noticeable.[5]

See also

References
  1. Scheid, Rickne C.; Woelfel, Julian B. (2007). Woelfel's Dental Anatomy: Its Relevance to Dentistry. Lippincott Williams & Wilkins. ISBN 9780781768603.
  2. Chiego, Daniel J. (2018-01-07). Essentials of Oral Histology and Embryology E-Book: A Clinical Approach. Elsevier Health Sciences. p. 170. ISBN 9780323569323.
  3. KOBAYASHI, H; TAGAMI, H (March 2004). "Functional properties of the surface of the vermilion border of the lips are distinct from those of the facial skin". British Journal of Dermatology. 150 (3): 563–567. doi:10.1046/j.1365-2133.2003.05741.x. PMID 15030342. S2CID 42980307.
  4. "Anatomy of the ageing lip". ENT & Audiology News. Retrieved 2018-02-04.
  5. "Complex Lip Laceration: Overview, Indications, Contraindications". 2017-03-09. {{cite journal}}: Cite journal requires |journal= (help)
  6. Luthra, Amit (2015). "Shaping Lips with Fillers". Journal of Cutaneous and Aesthetic Surgery. 8 (3): 139–142. doi:10.4103/0974-2077.167269. PMC 4645142. PMID 26644736.
  7. Drake, Richard; Vogl, A. Wayne; Mitchell, Adam W. M. (2009-04-04). Gray's Anatomy for Students E-Book. Elsevier Health Sciences. p. 1055. ISBN 978-1437720556.
  8. James, William D.; Berger, Timothy; Elston, Dirk (2015-04-12). Andrews' Diseases of the Skin E-Book: Clinical Dermatology. Elsevier Health Sciences. p. 793. ISBN 9780323319690.
  9. Thun, Michael; Linet, Martha S.; Cerhan, James R.; Haiman, Christopher A.; Schottenfeld, David (2017-11-07). Cancer Epidemiology and Prevention. Oxford University Press. ISBN 9780190238681.
  10. M.D., Ilya Petrou (2006-07-29). "Perioral dermatitis: It's not every rash that appears around the mouth". Dermatology Times. Retrieved 2018-02-05.
  11. "Cheilitis Glandularis Clinical Presentation: History, Physical, Causes". emedicine.medscape.com. Retrieved 2018-02-05.
  12. Kradin, Richard L. (2010-02-02). Diagnostic Pathology of Infectious Disease E-Book. Elsevier Health Sciences. ISBN 978-1455705986.
  13. Eversole, Lewis R. (2011). Clinical Outline of Oral Pathology: Diagnosis and Treatment. PMPH-USA. ISBN 9781607950158.
  14. Saucer, Caroline; Torg, Elisabeth (1996). The Female Body: An Owner's Manual : a Head-to-toe Guide to Good Health and Body Care-- at Any Age. Rodale Press. ISBN 9780875964003. lip liner vermilion.
  15. Rodriguez, Eduardo D.; Losee, Joseph E.; Neligan, Peter C. (2017-08-10). Plastic Surgery E-Book: Volume 3: Craniofacial, Head and Neck Surgery and Pediatric Plastic Surgery. Elsevier Health Sciences. p. 309. ISBN 9780323356992.
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