What causes delayed puberty?

Some young people develop later than relatives but progress normally once puberty begins. Intense training, inadequate nutrition, significant weight change, or ongoing illness can reduce the body's reproductive hormone signals. Hypothalamic amenorrhoea is one example in which stress, low energy availability, or illness disrupts the signals needed for periods.

The ovaries, pituitary gland, thyroid, and hypothalamus all contribute to pubertal development, so a hormone disorder can affect breast development or periods. Turner syndrome is a genetic condition that can affect ovarian function. An imperforate hymen can block menstrual blood from leaving the vagina, causing pain or swelling even when hormonal puberty is progressing.

Arrange an assessment if development seems not to be progressing, periods have not started when expected, or there is a marked difference from peers alongside distress or other symptoms. A clinician may review growth, nutrition, exercise, family timing, medicines, and chronic health conditions, then examine development and request hormone tests or imaging.

Bring a record of growth changes, headaches, vision symptoms, abdominal pain, discharge, eating patterns, and training load. Supportive, non-judgemental conversation helps the young person share concerns accurately.

Seek prompt medical advice for severe or recurring abdominal pain, a bulging vaginal opening, headaches with vision changes, excessive thirst or urination, marked weight loss, or symptoms of significant illness. Ask for routine assessment when puberty appears stalled or periods have not begun by the age advised for evaluation.

Does the growth pattern suggest later but typical development? Could nutrition, exercise, thyroid function, or another hormone pathway be involved? What tests are needed, and could pain indicate a menstrual outflow blockage?