How does precocious puberty affect a child's sexual development?

Precocious puberty is defined as the abnormally early onset of sexual development, typically occurring before age 8 in girls and age 9 in boys. Its impact on sexual development depends on whether the condition is classified as "true" precocious puberty or "precocious pseudopuberty."12

• True Precocious Puberty: This involves the premature activation of the hypothalamic-pituitary-gonadal axis, leading to normal pubertal development at an early age. In girls, this includes the development of adult cyclic function, such as ovulation and menstruation, meaning an affected girl can become pregnant. In boys, it results in spermatogenesis, virilization, and growth acceleration.12
• Precocious Pseudopuberty: This involves partial development of secondary sexual characteristics without the full reproductive capacity of true puberty. Affected girls may develop breasts and pubic hair and experience irregular vaginal bleeding, but they do not produce ova and are not fertile. Similarly, affected boys may experience premature virilization but do not produce sperm.12

Treatment is essential to support healthy psychological and social development and to prevent complications such as premature closure of the epiphyses, which can lead to short stature.1