It is difficult to predict whether any young child will grow up normally.However, screening for congenital hypothyroidism has been happening in the UK for long enough for us to know that almost all children who are diagnosed and treated from an early age will grow up normally.If you are worried, please ask to talk to a genetics nurse about this.In the UK, around one in every 3500 newborn babies have congenital hypothyroidism.He or she will also have a special scan of the neck that allows doctors to see if your child's thyroid gland is present and in the right place (explained below).
However, it may still be necessary for your child to be monitored by the audiology department for some months.
If the thyroid gland does not produce enough thyroxine, it causes hypothyroidism.
If the disorder is present at birth, it is called congenital hypothyroidism.
Doctors use the information from these tests to work out the right dose of thyroxine for your child, which changes as they gain weight and develop.
Once your child is two or three years old, they will need fewer blood tests as the dose of thyroxine will be calculated according to how he or she is growing.