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Pubic hair of infancy: endocrinopathy or enigma?

Todd D Nebesio1, Erica A Eugster

  • 1Department of Pediatrics, James Whitcomb Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, Indiana, USA. tdnebesi@iupui.edu

Pediatrics
|March 3, 2006
PubMed

Insights

Isolated pubic hair in infants is a rare, benign condition. This pubic hair typically resolves on its own by age 11 months, though long-term monitoring is advised.

Area of Science:

  • Pediatric Endocrinology
  • Dermatology
  • Reproductive Health

Background:

  • Pubic hair in infancy is uncommon and poorly understood.
  • Early pubic hair development can indicate various endocrine conditions.

Purpose of the Study:

  • To characterize the clinical presentation and natural history of isolated pubic hair in infants.
  • To determine if isolated pubic hair of infancy is a benign condition or a variant of premature adrenarche.

Main Methods:

  • Retrospective chart review of infants under 12 months with isolated pubic hair.
  • Analysis of patient demographics, clinical findings, growth patterns, laboratory results, and bone-age radiographs.

Main Results:

  • Eleven infants (6 male, 5 female) diagnosed with isolated pubic hair.
  • Average age at diagnosis was 8.3 months; 73% had atypical hair location.
  • Growth, labs, and bone age were normal; pubic hair resolved by 11 months in follow-up cases.

Conclusions:

  • Isolated pubic hair of infancy appears to be a benign entity.
  • Further research is needed to ascertain if it's an atypical variant of premature adrenarche and its long-term implications.

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