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Trichomegaly

Field	Value
synonym	Movie lashes
image	Closed human eye, superior view.jpg
caption	Trichomegaly in an adult human male, his upper lashes measuring 14 mm long
specialty	Dermatology
diagnosis	Measured upper eyelash length of 12 mm or greater, and/or increased length, thickness, curl, pigmentation of lashes
image2	Human eye, lateral view.jpg
caption2	Lashes have greater prominence (length, fullness, darkness) than normal subjects

Trichomegaly is a condition in which the eyelashes are abnormally long, objectively defined as 12mm or greater in the central area and 8mm in the peripheral. The term was first used by H. Gray in 1944 in a publication in the Stanford Medical Bulletin, though he was only the third person to characterize the disorder; the first two reports were published in German in 1926 and 1931 by Reiter and Bab, respectively. Gray suggested the use of the term "movie lashes" to describe this condition, for long lashes were at the time being portrayed in film as a desirable characteristic in women.

The condition does not always present a medical issue and can sometimes be a benign familial or isolated trait. The presence of excessively long or lush lashes in healthy individuals is likely under-reported as it is an aesthetically pleasing facial feature and usually does not prompt diagnosis or treatment on its own.

Etiology

There are several causal agents for this disorder; these can be divided into three main categories and include the following:

Congenital Syndromes

Oliver–McFarlane syndrome
Cornelia de Lange Syndrome
Cone-rod dystrophy
Tetralogy of Fallot
Hermansky–Pudlak syndrome
Goldstein Hutt Syndrome
Phylloid hypomelanosis
Smith-Lemli-Opitz Syndrome

Acquired disorders

Areata alopecia
Connective tissue disorders, such as
- Lupus
- Dermatomyositis
- Hen fever
- Atopic dermatitis
HIV/AIDS
Renal metastatic Adenocarcinoma
Eating disorders, such as Anorexia nervosa
Pregnancy

Drugs

Prostaglandin analogues
Cetuximab
Bimatoprost, Latanoprost
Phenytoin
Minoxidil
Ciclosporin
Topiramate
Streptomycin
Systemic corticosteroids
Penicillamine

Diagnosis

Eyelash trichomegaly (14mm long), but also increased thickness and pigmentation.

The objective definition of eyelash trichomegaly is having lashes which measure 12 mm or longer. However, lashes displaying increased curl, pigmentation, and thickness have also been included in the diagnosis of the condition.

References

Rapini, Ronald P.. (2007). "Dermatology: 2-Volume Set". Mosby.
(June 2012). "Eyelash trichomegaly: review of congenital, acquired, and drug-associated etiologies for elongation of the eyelashes: Eyelash trichomegaly". International Journal of Dermatology.
(2004-01-30). "A case of familial trichomegaly in association with oculocutaneous albinism type 1". Eye.
(2016). "Essential Trichomegaly of the Eyelashes". International Journal of Trichology.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

conditions-of-the-skin-appendages eyelash

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