For a 16-year-old girl who has not yet had her period and is also shorter than average, a comprehensive medical evaluation is recommended. This assessment should cover her growth, nutrition, endocrine system, and reproductive organs. While not all cases of delayed puberty indicate an illness, understanding the underlying cause is crucial for appropriate management.

Puberty is the stage when a child's body transitions to physical and reproductive maturity. This complex process occurs when the hypothalamic-pituitary-gonadal axis is activated, stimulating the ovaries in girls to produce sex hormones. As a result, children experience rapid growth in height, changes in physique, the appearance of secondary sexual characteristics, and the gradual completion of reproductive function.

Typically, girls begin puberty between the ages of 8 and 13, with the earliest sign often being breast development. Subsequently, children develop pubic and underarm hair, experience rapid growth, undergo changes in body shape, and begin menstruation. A child is considered to have delayed puberty if there is no sign of breast development after the age of 13 or if menstruation has not begun after the age of 15. Additionally, if initial signs of puberty appear but the progression is very slow – for example, if breast development does not advance after a few years or if a girl does not begin menstruation – an evaluation is also necessary.

Delayed puberty can lead to slower height development, impact reproductive capability, and negatively affect psychological well-being.

A doctor advises parents on the stages of puberty in children. Illustration: Tam Anh General Hospital

The causes of delayed puberty vary. One common reason is constitutional delay of puberty, where a child develops slower than peers but still has the potential for normal puberty and maturation. In such cases, the child will eventually enter puberty, and while height growth may be delayed, it can reach a level consistent with family genetics.

However, delayed puberty can also signal that the body lacks energy or has an illness affecting endocrine function. Children experiencing malnutrition, excessive dieting, eating disorders, intense physical training, or chronic stress may have delayed puberty because their bodies lack the necessary conditions to activate sexual maturation. Chronic conditions, such as gastrointestinal diseases causing malabsorption, kidney disease, heart disease, lung disease, poorly controlled diabetes, or thyroid disorders, can also be associated with delayed puberty.

Another group of causes involves the pituitary gland or hypothalamus, which regulate gonadal activity. If these organs do not secrete sufficient puberty-stimulating hormones, the ovaries do not receive signals to develop. This can lead to delayed puberty, often accompanied by slow height growth, fatigue, headaches, or blurred vision. In girls, specific issues like ovarian abnormalities, chromosomal disorders, premature ovarian failure, or structural abnormalities of the reproductive tract can also contribute to delayed puberty.

Treatment for delayed puberty depends entirely on the underlying cause. For constitutional delay, children may only require regular monitoring, ensuring adequate nutrition, sufficient sleep, appropriate physical activity, and psychological support. In some cases, doctors might consider short-term, low-dose hormone therapy to initiate puberty. If the cause is a chronic illness, thyroid disorder, or similar condition, the child will need specialized treatment and long-term follow-up.

Master of Science, Doctor Do Tien Son

Department of Pediatrics

Tam Anh General Hospital Hanoi