Mercy Hospital & Health Services Contact Us
MyChart
About Mercy
Join Our Team
set font size large set font size medium set font size small
email this page print this page
Health Illustrated Encyclopedia Banner
Health Illustrated Encyclopedia

Disclaimer:
Our Health Information Database is provided by A.D.A.M. the leading provider of electronic and printed information for professionals and consumers in healthcare and industry. It provides authoritative, reliable content written and reviewed by an editorial board who represent a variety of specialty areas. This board reviews and evaluates all healthcare information to ensure it is accurate, reliable, and can be used with complete confidence. And now you have access to the same authoritative, trusted clinical information relied upon by health professionals around the world.
Precocious puberty

Definition

Puberty is the time during which sexual and physical characteristics mature. Precocious puberty is when these body changes happen earlier than normal.

Alternative Names

Pubertas praecox

Causes, incidence, and risk factors

Puberty usually begins between ages 10 and 14 for girls, and ages 12 and 16 for boys. Some African American girls may start puberty earlier, around age 9.

The exact age a child enters puberty depends on a number of factors, including family history, nutrition, and gender.

Often there is no clear cause for precocious puberty, but some cases are due to changes in the brain, genetic problems, or certain tumors that release hormones. These conditions include:

Symptoms

In girls, precocious puberty is when any of the following develop before age 8:

  • Armpit or pubic hair
  • Beginning to grow faster
  • Breasts
  • First period (menstruation)
  • Mature outer genitals

Some evidence suggests that it may be normal for these changes to occur as early as age 7 in Caucasian girls and age 6 in African-American girls.

In boys, precocious puberty is when any of the following develop before age 9:

  • Armpit or pubic hair
  • Growth of the testes and penis
  • Facial hair, often first on the upper lip
  • Muscle growth
  • Voice change (deepening)

Signs and tests

Blood hormone levels, CT scan of the brain or of the abdomen and MRI of the brain or of the abdomen are often used to diagnose the problem.

Treatment

Medications can stop the release of sexual hormones. Some tumors need to be removed with surgery.

Support Groups

Expectations (prognosis)

Complications

Children who go through puberty too early may not reach their full height because growth stops too early.

Children with early sexual development are more likely to have psychological and social problems. Children and adolescents generally want to be the same as their peers, and early sexual development can make them appear different. This can result in self-esteem problems, depression, acting out at school and home, and abuse of alcohol and illegal substances.

Calling your health care provider

See your health care provider if:

  • Your child shows signs of precocious puberty
  • Any child with early sexual development appears to be having social problems in school

Prevention

References

Styne DM, Grumbach MM. Puberty: Ontogeny, Neuroendocrinology, Physiology, and Disorders. In: Kronenberg HM, Melmed, S, Polonsky KS, Larsen PR, eds. Williams Textbook of Endocrinology. 11th ed. Philadelphia, Pa: Saunders Elsevier; 2008: chap 24.
View Spanish Version

Encyclopedia Home
Drug Note Home
Health Information Home

Images

Care Points
    Read More

      Review Date: 8/2/2009

      Review By: Neil K. Kaneshiro, MD, MHA, Clinical Assistant Professor of Pediatrics, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

      The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2010 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

      www.adam.com
      www.mercyweb.org
      follow us online
      facebook youtube


      Contact us
      Home  |  Sitemap

      Disclaimer & Terms of Use  |  Privacy Statement  |  Notice of Privacy Practices
      Copyright ©2013 Mercy. Last modified 2/16/2011