Most common cause of delayed puberty in females

Some girls develop later than their peers and then progress normally. A clinician may also consider low body weight, intense exercise, long-term illness, reduced hormone signalling, ovarian insufficiency or a chromosomal condition such as Turner syndrome. The timing of puberty is judged alongside growth, family history and signs such as breast development or menstrual onset; one late milestone does not identify a cause.

Assessment may include a growth review, physical examination, hormone tests and imaging when appropriate. [Delayed Puberty](/symptoms/delayed-puberty/) is a symptom pattern rather than a diagnosis, while [Turner Syndrome](/conditions/turner-syndrome/) is one condition that can affect ovarian function.

Arrange a medical appointment if development appears not to be progressing or periods have not started when expected. Bring information about relatives who matured late, changes in weight or exercise, medicines, and any chronic health problems. Keep a simple record of growth changes and pubertal signs. Treatment depends on the finding: reassurance and monitoring may be enough, while an identified hormone or health problem may need targeted care.

Seek prompt assessment for severe headaches, vision changes, marked weight loss, persistent vomiting, significant fatigue or symptoms of a chronic illness alongside delayed development. A clinician should also review absent puberty with poor growth, unusual physical features or a history suggesting ovarian problems. Urgent help is appropriate for sudden severe symptoms rather than for late development alone.

Could this fit a family pattern of later puberty? Which growth and hormone findings would change the next step? Do I need testing for ovarian function, thyroid problems or a chromosomal condition? How will follow-up track development, bone health and emotional wellbeing?