Is My 10-Year-Old Daughter's First Period Normal? - Obstetrics and Gynecology

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Is the situation of menarche normal?


Hello, Doctor: My daughter just turned ten years old in June this year, and she had her first menstruation on July 6.
As of today (the 13th), it has been 8 days.
During the second and third days of her period, there were occasional blood clots, but she has not experienced any abdominal pain or other unusual symptoms.
Now, the flow has decreased and is becoming lighter.
I would like to ask the doctor if starting menstruation at ten years old is too early? Is there any concern about its impact on her growth in height? Is it normal for her period to last this long?

Jiaoji de mama, 30~39 year old female. Ask Date: 2005/07/14

Dr. Li Guanghan reply Obstetrics and Gynecology


Hello: Will precocious puberty affect height? An X-ray examination is needed to check the growth plates for any premature closure.
Please visit a pediatric orthopedic specialist.
Hsinchu Hospital, Department of Obstetrics and Gynecology.

Reply Date: 2005/07/14

More Info


The onset of menstruation, known as menarche, typically occurs between the ages of 9 and 16, with the average age being around 12. However, it is not uncommon for some girls to start their periods earlier or later than this average range. In your case, your daughter began her first period at the age of 10, which is within the normal range. The phenomenon of early menstruation is becoming more common, and it is generally defined as menarche occurring before the age of 8. Therefore, your daughter’s experience does not indicate any immediate concern regarding early onset.

Regarding the duration of her menstrual cycle, it is not unusual for young girls, especially in the first couple of years after menarche, to experience irregularities in their cycles. It is common for the first few periods to be longer or more unpredictable as the body adjusts to the hormonal changes that govern the menstrual cycle. The presence of blood clots, particularly in the early days of menstruation, can also be typical, especially if the flow is heavier. However, if the bleeding continues for an extended period or is excessively heavy, it would be advisable to consult a healthcare professional.

As for your concerns about her growth and development, early menstruation does not necessarily hinder growth. The growth plates in bones typically close after puberty, and while early menstruation can be associated with earlier growth spurts, it does not inherently limit overall height. Factors such as genetics, nutrition, and overall health play a more significant role in determining a child's final height.

In terms of monitoring her health, it is essential to ensure she maintains a balanced diet rich in nutrients, particularly iron, to prevent anemia, which can occur if menstrual bleeding is heavy. Encouraging regular physical activity and ensuring she gets adequate sleep are also important for her overall well-being.

If you notice any concerning symptoms, such as severe pain, excessive bleeding, or any other unusual changes, it would be prudent to seek medical advice. A visit to a pediatrician or a gynecologist specializing in adolescent health can provide reassurance and guidance tailored to her specific needs.

In summary, your daughter's first period at age 10 is considered normal, and while the duration of her cycle may seem lengthy, it is not uncommon for young girls. Monitoring her health and growth, along with maintaining open communication about her experiences, will help ensure she navigates this new phase of her life with confidence and support. If you have any further concerns, do not hesitate to reach out to a healthcare provider for personalized advice.

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