pubarche pubarche pubarche refers to the first appearance of pubic hair at puberty. pubarche is one of the physical changes of puberty and can occur independently of complete puberty. pubarche usually results from rising levels of androgen and not estrogens in females, and androgens in males from the adrenal glands, ovaries, or testes but may also result from exposure to an anabolic steroid. when pubarche occurs prematurely (in early or mid-childhood), it is referred to as premature pubarche or precocious puberty and may warrant an evaluation. premature adrenarche is the most common cause of premature pubarche. early occurrences can arise due to congenital adrenal hyperplasia, androgen-producing tumors of the adrenals or gonads. when adrenarche, central puberty, and all pathologic conditions have been excluded, the term isolated premature pubarche is used to describe the unexplained development of pubic hair at an early age without other hormonal or physical changes of puberty. average age five tanner stages of male genitalia and pubic hair, the adolescent period stages of female genitalia and pubic hair during puberty