Puberty in Girls
Answers to common questions about puberty in girls.
Questions on this page
When should breast development start?
Breast development is usually one of the earliest signs of puberty in girls.
When does menstruation usually begin?
Menstruation usually begins after other pubertal changes have started. The timing varies between individuals.
What if my daughter's periods are irregular when they first start?
Some irregularity can occur during the early years after the first period. Persistent, very infrequent, excessively heavy or otherwise concerning bleeding should be evaluated.
Can PCOS occur in teenagers?
Yes, but diagnosing PCOS during adolescence requires careful consideration because some normal features of puberty can resemble PCOS.