Is it precocious puberty when a 9-year-old girl's breasts begin to develop?

Patient's question:

Doctor, my child is 9 years old. I can clearly see that their breasts are growing day by day, and they have also been losing a lot of hair recently.
Medical history and treatment effectiveness: No treatment has been administered yet.
What kind of help do you want: I would like to ask if this falls under precocious puberty? Should I go to the hospital for a check-up? Which department should I see?

Doctor's answer:

Hello, breast development typically begins between the ages of 8 and 12. At first, the milk ducts that make up the breast and the surrounding fat tissue form a small, button-like lump (the bud stage) in the breast and areola. After that, the nipple begins to enlarge, the areola gradually expands, and the color of the breast and areola gradually darkens. Around the ages of 14-15, breast development becomes more noticeable, and the breasts become noticeably prominent. If you have concerns, you can visit the endocrinology department for a check-up. This is the advice for the question "Does a 9-year-old girl's breast growth count as precocious puberty?" I hope it helps you. Wishing you good health!

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