Constitutional delay of growth and puberty


Constitutional growth delay refers to children who are small for their age but who grow at a normal rate. They often have a delayed bone age, meaning their skeletal maturation is younger than their age in years. Although puberty may be delayed, they tend to catch up with their peers when they reach adult height.

Little girl typing numbers on calculator

Growth calculator

It is important to keep track of your child’s growth in order to identify if there is a problem early on. We recommend measuring your child every 6 months, which is now easier, with our simple to use growth calculator.

Male and female patients waiting in corridor of medical centre

Talking to your doctor about child growth

If you are concerned about your own or your child’s growth, you should speak to a doctor. This section will help you with what questions to ask, so that you can be prepared.



Hypothyroidism occurs when the thyroid gland does not produce enough thyroid hormone, which can result in slowing down of the body processes. In children this can mean slower growth and delayed puberty. Hypothyroidism in children is generally quite rare.

Prader-Willi syndrome (PWS)

PWS is a rare genetic disorder in which a part of the brain known as the hypothalamus doesn't develop as expected. PWS is associated with a number of issues including short stature, difficulties with behavioural and social skills, and distinct facial features. PWS affects about 1 in 20,000 children.

Familial short stature

Children with familial short stature tend to fall at the lower extreme of the growth chart (below the 3rd percentile) and their growth is usually impacted by their parents’ heights. This does not tend to impact their overall health and their height is generally considered to be appropriate for their genetic potential based on their parents’ heights.