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.
They will need to take thyroxine for the rest of their life, but this quickly becomes routine.
The medicine is easily available and can be ordered on repeat prescription from your child's family doctor (GP).
For this reason, all young children coming to Great Ormond Street Hospital (GOSH) for diagnosis and treatment of congenital hypothyroidism will have a detailed hearing assessment at about six weeks of age.
This will still need to be done even if your baby has passed the neonatal hearing assessment.
This is extremely useful information as it allows us to tell you whether there is a chance of the condition happening in another child that you might have.
For a very small number of children born with hypothyroidism, hearing problems can occur as part of a rare syndrome (collection of symptoms often seen together) or if there is severe hypothyroidism at birth.Congenital hypothyroidism is a disorder affecting the thyroid gland, which is in the neck.The thyroid gland produces a hormone (chemical substance) called thyroxine, which is needed for normal growth and development.Please remember that it is extremely rare for serious hearing problems to occur as a result of congenital hypothyroidism.However, it may still be necessary for your child to be monitored by the audiology department for some months.On other occasions the thyroid gland does not develop at all.