A member asked:

What determines the official "start" of puberty?

A doctor has provided 1 answer
Dr. Shah Chowdhury answered

Specializes in Pediatrics

CHANGES OF PUBERTY: Begin w/pulsatile release of hormones frm pituitary gland w/rise of testicular/ovarian/ adrenal estrogen, androgen, etc. Sequence of changes called: sexual maturity rating(smr)/tanner stages. Girls: breast bud 8-13 yr; menses-2 1/2 yr later. Boys: testicular enlargemt 9 1/2 yr; some breast hypertrophy/40-65%, penile growth. Both sx: armpit/genital hair, body odor/ voice change, sexual interest/urge.

Answered 9/28/2016

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