10 Hypertrichosis Symptoms

By sarah-jane
Reviewed: dr. vanta
Article Sources Article Sources
  • 1. 'Hypertrichosis.' DermNet NZ , dermnetnz.org/topics/hypertrichosis/
  • 2. Saleh, Dahlia, et al. 'Hypertrichosis.' StatPearls, StatPearls Publishing, 5 January 2021
  • 3. 'Becker Naevus.' DermNet NZ, dermnetnz.org/topics/becker-naevus/
  • 4. Chien, Mu-Ming, et al. 'The Hair-Collar Sign.' The Journal of Pediatrics, vol. 168, 2016, p. 246, doi.org/10.1016/j.jpeds.2015.09.081
  • 5. Staff, SBI. 'Gingival Enlargement.' The American Academy of Oral Medicine, www.aaom.com/index.php?option=com/content&view=article&id=132:gingival-enlargement&catid=22:patient-condition-information&Itemid=120
  • 6. Kurtipek, Gülcan S., et al. 'Faun tail: a rare cutaneous sign of spinal dysraphism.' Acta Dermatovenerologica Alpina Pannonica et Adriatica, vol. 24, no. 1, 2015, doi:10.15570/actaapa.2015.5
  • 7. Gupta, Lipy, et al. 'Nevoid hypertrichosis: Case report with review of the literature.' International Journal of Trichology, vol. 3, no. 2, 2011, p. 115, doi:10.4103/0974-7753.90829
  • 8. Kaur, Sandeep, and BharatBhushan Mahajan. 'Eyelash trichomegaly.' Indian Journal of Dermatology, vol. 60, no. 4, 2015, p. 378, doi:10.4103/0019-5154.160484
Medical Expert Medical Expert


A specific type of onset birthmark, known medically as Becker nevus, can be associated with hypertrichosis. It may also be known as Becker melanosis. The birthmark appears later on in life, and it only affects men.

The condition is caused by a combination of the upper layers of skin, pigment cells and hair follicles growing too large. After puberty, it can appear as a darker, hairy patch of skin. Laser therapies are among the treatment options for this type of birthmark.3‘Becker Naevus.’ DermNet NZ, dermnetnz.org/topics/becker-naevus/


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