Speech and language milestones
If your child isn’t responding to sounds or isn’t developing his language skills appropriately, he may have hearing problems. It’s important to remember that not every child is the same, and children reach milestones at different ages. Consult your child's physician if you are suspicious that your child is not developing speech and language skills correctly. The National Institute on Deafness and Other Communication Disorders (NIDCD) and other experts list the following age-appropriate speech and language milestones.