The presence of breast nuclei in girls aged 8.5 years is generally considered to be a sign of precocious puberty.
Girls who have breast nuclei may be caused by the beginning of breast development, which is the female secondary sexual characteristics, generally speaking, the appearance of female secondary sexual characteristics should be around 9~12 years old, if this situation occurs at the age of 8.5 years old, it is considered to be the manifestation of precocious puberty, which is not normal.
Precocious puberty in girls is divided into central precocious puberty (true precocious puberty), peripheral precocious puberty (pseudo precocious puberty) and incomplete precocious puberty (partial precocious puberty). Incomplete precocious puberty (partial precocious puberty) includes simple precocious breast development, which has a certain degree of self-healing, and can be diagnosed in the hospital first.
It is recommended to go to the hospital and have the doctor observe the signs and determine the age of the bones to make a comprehensive diagnosis and identify the causes as early as possible to take targeted treatment or therapy.