Definition

Precocious puberty (PP) is when puberty happens before:

• Age 8 years in girls
• Age 9 years in boys

Causes

Puberty is a complex process of brain, body, and hormonal growth. In most cases, the cause is not known.

In some cases, PP may be caused by:

• Brain tumors
• Cerebral palsy
• Hydrocephalus
• Problems with the central nervous system

Abnormalities in Adrenal Glands or Hypothalamus May Lead to Precocious Puberty Copyright © Nucleus Medical Media, Inc.

Risk Factors

Precocious puberty is more common in girls.

Other things that may raise your child’s risk are:

• Having a greater body mass index, especially in girls
• Exposure to toxins
• Family history—some cases may run in families

Symptoms

Symptoms of PP in girls may include:

• Breast, pubic hair, and underarm hair growth
• Menstrual bleeding

Symptoms of PP in boys may include:

• Growth of penis and testicles
• Pubic and underarm hair growth

Diagnosis

You will be asked about your child’s symptoms and past health. A physical exam will be done. Your child’s puberty milestones and growth will be checked. Your child may be referred to a doctor who specializes in hormonal, glandular, and metabolic problems.

Blood tests may be done.

Pictures may be taken with:

• X-ray
• Ultrasound
• MRI scan

Treatment

Talk with your child's doctor about the best plan for your child. You child may need:

Prevention

PP can't be prevented.