Unibrow

File:UniBrow Close Up.jpg

A close up of the human unibrow. Not all unibrows are similar, the unibrow pictured above also has hair between the eyes.

A unibrow (or jacco brow or monobrow; called synophrys in medicine) is a single eyebrow created when the two eyebrows meet in the middle above the bridge of the nose.[1] The hair above the bridge of the nose is usually of the same color and thickness as the eyebrows, giving the appearance that they converge to form one uninterrupted line of hair.

## Contents

* 1 History
* 2 Culture and beauty
* 2.1 Oman
* 2.2 Tajikistan
* 2.3 Elsewhere
* 3 Medicine
* 3.1 Genetics
* 3.2 Medical conditions
* 4 See also
* 5 References

## History

The first known use of the word unibrow was in 1988.[2]

## Culture and beauty

### Oman

A unibrow is considered as a sign of beauty in Arab culture. Its popularity causes women to draw a black line joining the brows as a part of their routine makeup to fake a unibrow. A study found the prevalence of synophrys to be at 11.87% in the Omani population.[3]

### Tajikistan

In Tajikistan,[4] a unibrow is viewed as an attractive quality in both men and women.[citation needed] For women, it is associated with virginity and purity and, in men, virility.[citation needed] If there is no unibrow present, or if it is weak, it is commonplace for women to use a kohl liner or a modern kajal pen to simulate a unibrow.[citation needed]

### Elsewhere

The unibrow has largely been seen as undesirable in the United States and United Kingdom, with the hairs often plucked, shaved, or waxed away.[5][6][7]

## Medicine

### Genetics

The unibrow is a recessive genetic trait.[8] It is associated with the PAX3 gene.[5][9]

### Medical conditions

A unibrow is part of normal human variation, but can also stem from developmental disorders. A unibrow is a recognized feature of Cornelia De Lange syndrome, a genetic disorder whose main features include moderate to severe learning difficulties, limb abnormalities such as oligodactyly (fewer than normal fingers or toes) and phocomelia (malformed limbs), and facial abnormalities including a long philtrum (the slight depression/line between the nose and mouth).

Other medical conditions associated with a unibrow include:

* Waardenburg syndrome;
* Patau syndrome;
* Smith-Lemli-Opitz syndrome;
* Sanfilippo syndrome;
* 3p deletion syndrome;[10]
* Chromosome Deletion Dillan 4p Syndrome (Wolf–Hirschhorn syndrome);
* Gorlin syndrome (Basal Cell Nevus Syndrome);

Cornelia de Lange Syndrome

* Frontometaphyseal dysplasia;
* ATRX syndrome;
* Chromosome 9q34 Microdeletion Syndrome or Kleefstra syndrome.

## See also

* Glabella

## References

1. ↑ "confluent eyebrow". http://www.thefreedictionary.com/confluent+eyebrow.
2. ↑ "Definition of UNIBROW". http://www.merriam-webster.com/dictionary/unibrow.
3. ↑ Synophrys: Epidemiological Study.P.Kumar. Int J Trichology.2017;9(3):105-107.doi: 10.4103/ijt.ijt_14_17 PMC 5596643.
4. ↑ Elder, Miriam (November 27, 2010). "Where the unibrow reigns". Global Post. http://www.globalpost.com/dispatch/tajikistan/101126/unibrow-central-asia-fashion. Retrieved November 13, 2011.
5. ↑ 5.0 5.1 "Why Does Food Taste Bad After You Brush Your Teeth?" (in en). 2018-08-24. http://mentalfloss.com/article/20151/why-does-everything-taste-bad-after-you-brush-your-teeth.
6. ↑ Adame, Amanda (2017-05-25). "People Are Embracing The Unibrow – Here's Why It's A Good Thing" (in en-US). Konbini United States. http://www.konbini.com/us/lifestyle/positive-effects-of-embracing-unibrow/.
7. ↑ Usborne, Simon (2017-05-03). "Why it’s finally cool to have a monobrow" (in en). http://www.theguardian.com/fashion/shortcuts/2017/may/03/why-its-finally-cool-to-have-a-monobrow.
8. ↑ "Human Traits". http://faculty.southwest.tn.edu/jiwilliams/Human_Traits.htm.
9. ↑ Adhikari, Kaustubh. "How we discovered the genetic origin of the 'monobrow' and other hair traits" (in en). The Conversation. http://theconversation.com/how-we-discovered-the-genetic-origin-of-the-monobrow-and-other-hair-traits-55548.
10. ↑ "Chromosome 3p- syndrome | Genetic and Rare Diseases Information Center (GARD) – an NCATS Program" (in en). http://rarediseases.info.nih.gov/GARD/Condition/3750/3p_deletion_syndrome.aspx.

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