What are the physiological development characteristics of girls?
Nov 28, 2024
Source: Cainiu Health
Dr. Yang Ziqi
Introduction
Under normal circumstances, the physical development characteristics of girls represent a complex and orderly process that marks the onset of puberty. Physical development features in girls may include breast development, growth of pubic and underarm hair, menarche (first menstrual period), increases in height and weight, and widening of the pelvis. It is recommended to closely monitor a girl's physical development and provide necessary support and guidance.
Under normal circumstances, girls may experience the following physical development characteristics: breast development, growth of pubic and underarm hair, menarche (first menstruation), increase in height and weight, and widening of the pelvis. If any discomfort occurs, timely medical consultation is recommended. Detailed explanations are as follows:
1. Breast Development
Breasts are an important sexual characteristic in girls, and breast development is usually the first sign of puberty, indicating that the ovaries have started producing estrogen. Breast development typically begins between the ages of 9 and 14. Initially, it may present as a small, firm lump beneath the nipple, followed by gradual breast enlargement and fullness. The areola becomes more elevated, and the area of pigmentation around the areola gradually expands.
2. Growth of Pubic and Underarm Hair
As breast development progresses, girls generally begin to develop pubic hair around the ages of 11 to 12, followed by the growth of underarm hair. Pubic hair typically forms an inverted triangle shape and initially appears soft, sparse, and light in color. Underarm hair grows in the armpit area and is also fine and light-colored at the beginning of development. Both pubic and underarm hair serve to resist bacteria and are beneficial for a girl's health.
3. Menarche
Menarche is an important milestone in a girl's puberty, typically occurring around the age of 12 to 13. Following the first menstrual period, menstrual cycles may be irregular at first but will gradually become more regular over time. During menarche, girls may experience symptoms such as drowsiness, fatigue, or mild lower abdominal pain, which are all normal physiological phenomena.
4. Increase in Height and Weight
Puberty is a period marked by significant growth in both height and weight for girls. The growth spurt in height usually begins 1 to 2 years after the onset of breast development. During this time, weight also increases accordingly. It is important to note that weight gain should correspond proportionally to height growth, to avoid excessive obesity or being underweight.
5. Pelvic Widening
Under the influence of sex hormones, a girl's pelvis gradually widens, preparing for potential future reproductive needs. Pelvic widening is a natural process of pubertal development and does not require excessive concern or intervention.
It is recommended to closely monitor a girl's physical development and provide necessary support and guidance. Should any concerns or questions arise, timely consultation with a qualified healthcare professional is advised.
