Precocious puberty signs and symptoms include development of the following before age 8 in girls and before age 9 in boys.

Signs and symptoms in girls include:

  • Breast growth
  • First period (menarche)

Signs and symptoms in boys include:

  • Enlarged testicles and penis
  • Facial hair (usually grows first on the upper lip)
  • Deepening voice

Signs and symptoms that can occur in boys or girls include:

  • Pubic or underarm hair
  • Rapid growth
  • Acne
  • Adult body odor

When to see a doctor

Make an appointment with your child's doctor for an evaluation if your child has any of the signs or symptoms of precocious puberty.

Jan. 02, 2014

You Are ... The Campaign for Mayo Clinic

Mayo Clinic is a not-for-profit organization. Make a difference today.