Here's an overview of the major physical changes girls can expect as they go through puberty:. Girls usually begin puberty between the ages of 8 and 13 years old. The earliest sign of puberty in most girls is the development of breast "buds," nickel-sized bumps under the nipple. It is not unusual for breast growth to start on one side before the other.
This usually starts when a girl is about 10 years old. Sometimes, though, a much younger girl starts to show the signs of puberty. These early signs of puberty can be hard for your child. The specialty of Pediatric and Adolescent Gynecology expertly cares for early puberty in girls.
Precocious puberty is when a child's body begins changing into that of an adult puberty too soon. When puberty begins before age 8 in girls and before age 9 in boys, it is considered precocious puberty. Puberty includes rapid growth of bones and muscles, changes in body shape and size, and development of the body's ability to reproduce. The cause of precocious puberty often can't be found.
Back to Health A to Z. Puberty is when a child's body begins to develop and change as they become an adult. But it's perfectly normal for puberty to begin at any point between the ages of 8 and 13 in girls and 9 and 14 in boys. For example, girls may start periods before the age of 8 but have no breast development. It may just be a tendency that runs in your family.