A period of rapid physical growth and change, brought about by hormonal changes, that culminates in sexual maturity. In most human girls and boys, it starts between the ages of 10 and 14 and it is complete by the age of 16 in most girls, and by the age of 17 in most boys.

Adrenarche
Menarche
Pubarche
Thelarche

An early sexual maturation stage, occurring 1 or 2 years before the onset of puberty, during which the zona reticularis of the adrenal cortex releases increased levels of dehydroepiandrosterone (DHEA) and androstenedione. These adrenal androgens are ultimately responsible for the appearance of pubic and axillary hair, increased oil production by facial skin, acne, and distinct adult body odor.

Menarche
Pubarche
Thelarche

Development of axillary and pubic hair during puberty.

Adrenarche
Menarche
Thelarche

Development of breasts as an early event during female puberty.

Adrenarche
Menarche
Pubarche