Is it normal for an 11 year old girl to have her period?

It is normal for girls over 11 years old to have their periods, and it is not precocious puberty. The age of menarche for girls is around 13-14 years old. Due to health conditions, genetic factors, etc., some girls may have their first period at around 11 years old. If a girl still does not have her period after the age of 16, she needs to go to the hospital for examination, such as B-ultrasound to check the development of the uterine appendages, blood tests to check sex chromosomes, and six estrogen tests. During the menstrual period, pay attention to rest, avoid fatigue, avoid catching a cold, wash your hair and take a bath. When bathing, use a shower instead of a tub bath. During menstruation, pay attention to maintaining the hygiene of the vulva and change sanitary napkins frequently. Because the gonad axis of adolescent girls is not fully developed, they may have menstrual disorders within 1-2 years of the first menstruation. 2-5 years after the first menstruation, the menstrual period will gradually return to normal.

Girls will enter puberty after the age of ten, and the hypothalamus and pituitary gland will secrete growth hormone, which will have a positive feedback effect on the uterus and ovaries. The uterus and ovaries secrete corresponding female hormones and estrogen to promote the development of breasts and genitals. The uterine wall can proliferate under the action of female hormones and estrogen, and the uterus and ovaries will ovulate. 9 to 10 days after ovulation, the corpus luteum shrinks, female hormones and estrogen metabolism decrease, the uterine wall shrinks and falls off to bleed, and menstruation occurs. Therefore, it is normal for girls over 11 years old to have their periods.

A woman's life is influenced by the hypothalamus-pituitary-uterine-ovarian axis. If the axis is mature, she will ovulate and have her period. Therefore, for girls, this axis depends on the time when it matures. Some people mature earlier and may have their periods at the age of nine, but some people mature later and may not have their periods until the age of 17. Therefore, it all depends on the situation of this axis.

Then a girl's menstruation is a sign of her perfection, but sometimes it does not mean that she is completely mature. She may have just started, so an 11-year-old girl may have her menstruation now, or she may be very irregular and will not have her second menstruation for a long time, so there is no need to pay special attention to it. Therefore, for a girl, this axis is a process from its creation to perfection and then to decline. The initial perfection and the final decline are exactly the same. It will cause the menstrual period to be slightly less regular than that of normal growing women, which is normal.