International Journal of Trichology International Journal of Trichology
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 Table of Contents  
Year : 2016  |  Volume : 8  |  Issue : 3  |  Page : 153-154  

Essential trichomegaly of the eyelashes

1 Department of Dermatology, Hospital Reina Sofía Córdoba, Córdoba, Spain
2 Department of Dermatology, Complejo Hospitalario de Granada, Granada, Spain

Date of Web Publication24-Aug-2016

Correspondence Address:
Ricardo Ruiz-Villaverde
Department of Dermatology, Complejo Hospitalario de Granada, Avda Fuerzas Armadas 2, 18014 Granada
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0974-7753.189031

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How to cite this article:
Fernández-Crehuet P, Ruiz-Villaverde R. Essential trichomegaly of the eyelashes. Int J Trichol 2016;8:153-4

How to cite this URL:
Fernández-Crehuet P, Ruiz-Villaverde R. Essential trichomegaly of the eyelashes. Int J Trichol [serial online] 2016 [cited 2018 Jan 23];8:153-4. Available from:


A 12-year-old girl, with no personal or family history of interest, attended to our dermatology unit complaining an excessive growth of eyelashes during the last 5 years, producing occasional discomfort. Systemic treatment or topical application of creams or eye drops was ruled out. On cutaneous examination, the measurement of both eyelashes reached 10 mm on the peripheral edge and 17 mm in the central area [Figure 1] and [Figure 2]. No other trichological, dermatological, or dental anomalies were detected. Complementary tests including blood cell count, general biochemistry, thyroid profile, and autoantibodies showed no abnormalities. Essential trichomegaly as a form of localized congenital hypertrichosis was the diagnosis concluded.
Figure 1: Eyelash trichomegaly (frontal view)

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Figure 2: Eyelash trichomegaly (cenital view)

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Eyelash trichomegaly is defined as thickening and lengthening with or without curvature than 12 mm in the central area thereof or 8 mm on the peripheral one. [1] In spite of what is commonly considered, eyelash trichomegaly may disturb significantly the quality of life and be the cause of corneal abrasions and eye disorders such as amblyopia. Eyelash hair has a growth cycle of 5-6 months with a short anagen phase. Only 50% of these hairs can be found on this phase in contrast with scalp hair where the anagen phase lasts approximately 3 months and 70% of the hairs are included in this phase. [2]

Causes related to this entity include congenital, pharmacological, and acquired disorders and are summarized in [Table 1]. In the pathophysiology of this disorder, some immune factors such as prostaglandins and epidermal growth factor appear to be involved. Both mediators increase the duration of the anagen period on the hairs in this area. The treatment is symptomatic and sometimes requires the use of artificial tears to prevent associated meibomitis. [3]
Table 1: Etiology of eyelash trichomegaly

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Conflicts of interest

There are no conflicts of interest.

   References Top

Paus R, Burgoa I, Platt CI, Griffiths T, Poblet E, Izeta A. Biology of the eyelash hair follicle: An enigma in plain sight. Br J Dermatol 2016;174:741-52.  Back to cited text no. 1
Jayamanne DG, Dayan MR, Porter R. Cyclosporin-induced trichomegaly of accessory lashes as a cause of ocular irritation. Nephrol Dial Transplant 1996;11:1159-61.  Back to cited text no. 2
Woo TL, Francis IC. Intermittent blurred vision and trichomegaly due to latanoprost. Clin Experiment Ophthalmol 2001;29:272-3.  Back to cited text no. 3


  [Figure 1], [Figure 2]

  [Table 1]


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