What to know about precocious puberty in teenagers

Changes can include breast development, pubic or underarm hair, body odour, acne, a growth spurt or menstrual bleeding. The timing and pattern matter, because some changes may be isolated while others show a broader progression of puberty. A clinician may review the growth chart, physical development, family history and any medicines or hormone exposure. Assessment can include blood tests or imaging when indicated. Early puberty can affect height growth and emotional wellbeing, but the outlook depends on the cause and how development is progressing.

Arrange an appointment with a paediatrician, family doctor or paediatric endocrinologist. Bring a timeline of the first changes, dates of any bleeding, medicines and supplements, and information about close relatives’ puberty timing. Avoid giving hormone products without medical advice. Offer calm, age-appropriate explanations and privacy at home and school. If treatment is discussed, ask what it is intended to change, how it is monitored and what follow-up visits involve.

Seek prompt medical advice for vaginal bleeding, rapidly progressing changes, severe headache, vision changes, seizures, unusual thirst or a sudden change in behaviour. These features need clinical review because puberty-related changes can sometimes occur alongside another health problem. New breast or genital changes without other puberty signs still deserve an appointment, especially when they progress or cause distress.

What findings suggest that puberty is progressing? Does growth need monitoring? Which tests are useful for this pattern? Could a medicine or hormone exposure contribute? Would specialist referral help? How can we support privacy, comfort and emotional wellbeing?