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Genetic and Rare Diseases Information Center (GARD)

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Becker's nevus

Other Names for this Disease
  • Becker melanosis
  • Becker naevus
  • Becker nevus
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Becker's nevus is a late-onset, large, brown birthmark occurring mostly in males. It typically develops during childhood or adolescence on the shoulders or upper trunk, but occasionally it develops on other areas of the body. After puberty, it often becomes darker and more hairy (hypertrichosis), and acne may develop within the nevus in some individuals. Becker's nevus is due to an overgrowth of the epidermis (upper layers of the skin), pigment cells (melanocytes) and hair follicles. Treatment is often primarily for cosmetic reasons and may include laser treatment or electrolysis for excessive hair growth; pigment laser treatment to reduce pigmentation; and standard acne therapy.[1]
Last updated: 4/25/2012


  1. Vanessa Ngan. Becker naevus. DermNet NZ. June 29, 2011; Accessed 4/20/2012.
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Basic Information

  • DermNet NZ is an online resource about skin diseases developed by the New Zealand Dermatological Society Incorporated. DermNet NZ provides information about this condition.

In Depth Information

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  • PubMed is a searchable database of medical literature and lists journal articles that discuss Becker's nevus. Click on the link to view a sample search on this topic.