gonadarche
Pronunciation: gon-ad-AR-kee
The activation of the hypothalamic-pituitary-gonadal axis during puberty, triggering sexual maturation.
Full Definition
Gonadarche represents the reactivation of the hypothalamic-pituitary-gonadal (HPG) axis during puberty, which had been dormant since early infancy. This complex hormonal cascade involves increased GnRH secretion from the hypothalamus, leading to LH and FSH release from the pituitary, which then stimulates gonadal hormone production. In clinical practice, understanding gonadarche timing and progression is essential for evaluating pubertal disorders and determining appropriate interventions for adolescent patients.
Usage
Usage note: Distinguish from adrenarche, which refers specifically to adrenal androgen production rather than gonadal activation.
In Context
- "Normal gonadarche typically begins between ages 8-13 in girls and 9-14 in boys." — Patient education material
- "The absence of gonadarche by age 13 in girls warrants endocrinological evaluation." — Clinical practice guideline