What is the normal age for breast development in girls?
My daughter is 8-1/2 years old and just started breast development. Is this too early? From: Julia, Wilmette The earliest normal age that breast buds or pubic/axillary hair can be seen is starting at age 8 years. Prior to 8 years of age, any pubertal changes would be considered too early or precocious and would require further evaluation to assess for concerning reasons for pubertal activation. There are two different hormonal systems that drive breast development and pubic/axillary hair development, respectively. These changes usually appear around the same time but can they appear separately. Although studies have reported that up to 8-25% of girls in the U.S. were found to develop breast or pubic hair development before 8 years (with differing percentages based on race), pubertal changes that occur prior to 8 years of age should be evaluated for abnormal causes. Even if pubertal changes occur shortly after 8 years of age, changes that are rapidly progressive would require further ev
