How to Determine if a Girl Has Precocious Puberty
Generally, to determine whether a female infant has precocious puberty, methods such as observing breast development, monitoring changes in height and weight, observing menstruation status, examining skeletal development, and comprehensive medical evaluation can be used. If any abnormalities are noticed, timely medical consultation is recommended. Detailed analysis is as follows:

1. Observe breast development: Breast development is one of the main characteristics of puberty in girls. If breast enlargement, areolar enlargement, or darkening occur before the age of 8, this may be a sign of precocious puberty. Parents should regularly observe and palpate the breasts to check for lumps or pain.
2. Monitor changes in height and weight: Precocious puberty can cause accelerated growth in girls, resulting in rapid increases in height and weight over a short period. If the infant's height and weight gain too quickly and significantly exceed the normal range compared to peers, precocious puberty should be considered.
3. Observe menstruation status: Although female infants do not menstruate during early childhood, parents should pay attention to the development of their reproductive organs. If a female child experiences menarche before the age of 9, this is one of the key indicators of precocious puberty. However, vaginal bleeding during infancy may be caused by other factors such as infection or trauma, so prompt medical consultation is necessary in such cases.
4. Examine skeletal development: Sex hormone secretion is one of the main factors determining epiphyseal plate closure. Precocious puberty can lead to advanced skeletal development. Parents can schedule regular bone age assessments for the child. If the bone age is significantly ahead of the chronological age, further medical evaluation should be conducted.
5. Comprehensive medical evaluation: If parents suspect signs of precocious puberty in a female infant, timely medical consultation for comprehensive evaluation is recommended. The physician will perform a physical examination, sex hormone testing, ultrasound, and other diagnostic methods to formulate an appropriate treatment plan based on findings.
Parents are advised to provide scientifically balanced nutrition, monitor the infant's growth and development closely, and promptly identify and address any issues.