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In the United States, the age of onset of puberty in girls depends heavily on their racial background. Delayed puberty means the lack of breast development by age 12.8 years for White girls, and by age 12.4 years for Black girls. [7] [8] The lack of menstruation by age 15 in any ethnic background is considered delayed. [8]
Although there is a wide range of normal ages, females typically begin the process of puberty around age 10½; males at ages 11½—12. Puberty generally ends between 15—17 for females and 16–17 for males. [1] [2] [3] Females attain reproductive maturity about four years after the first physical changes of puberty appear. [13]
Van Wyk and Grumbach syndrome is a medical condition defined by a combination of hypothyroidism, precocious puberty (with delayed bone age and lack of pubic hair), and ovarian cysts in pre- and post-pubertal girls or macroorchidism (unusually large testes) in boys. [1]
The average age that a child reaches sexual maturity differs between the genders: Girls experience puberty between 8 and 13 years old and boys experience it between 9 and 14 years old, according ...
In girls, puberty and periods normally start between the ages of 10 to 15, but experts say this has been getting earlier in recent decades. In girls, puberty and periods normally start between the ...
On average, girls begin the process of puberty at age 10 or 11 while boys begin at age 11 or 12. [5] Partly because puberty varies, some definitions of chronophilias (sexual preference for a specific physiological appearance related to age) show overlap between pedophilia, hebephilia and ephebophilia. [2] For example, the DSM-5 extends the ...
The average age of onset of puberty is 10–11 for girls and 11–12 for boys. [10] [11] Every person's individual timetable for puberty is influenced primarily by heredity, although environmental factors, such as diet and exercise, also exert some influences. [12] [13] These factors can also contribute to precocious and delayed puberty. [14] [13]
However, if puberty has not started by either age 14 (girls) or 15 (boys) years and one or more of the non-reproductive features mentioned below is present, then a referral to reproductive endocrinologist might be advisable. [15] [2] [8]